☆ 4.8 Review

Recent progress in TiO2-based microwave absorption materials

NANOSCALE (2023)

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Article Materials Science, Multidisciplinary

Constructing BaTiO3/TiO2@polypyrrole composites with hollow multishelled structure for enhanced electromagnetic wave absorbing properties

Dan Mao et al.

Summary: Researchers constructed BaTiO3/TiO2@polypyrrole (PPy) composites with hollow multishelled structure (HoMS) to enhance the electromagnetic wave absorbing properties of BaTiO3-based absorbing material. BaTiO3/TiO2 HoMSs were prepared using TiO2 HoMSs as a template. FeCl3 was then introduced to initiate the oxidative polymerization of pyrrole monomer, successfully forming BaTiO3/TiO2@PPy HoMSs. The electromagnetic wave absorbing properties of BaTiO3/TiO2 HoMSs and BaTiO3/TiO2@PPy HoMSs with different shell numbers were investigated. The results show that BaTiO3/TiO2@PPy HoMSs exhibit improved microwave absorption, with tripled-shelled BaTiO3/TiO2@PPy HoMS having the most excellent absorbing performance.

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS (2023)

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Article Chemistry, Physical

Titania-Morphology-Dependent Pt-TiO2 Interfacial Catalysis in Water-Gas Shift Reaction

Yunshang Zhang et al.

Summary: The morphology of the TiO2 support strongly influences the interfacial catalysis of Pt-TiO2 for the water-gas shift (WGS) reaction. Pt/TiO2{001} catalyst exhibits fewer surface oxygen vacancies and consequently active Pt-Ov,TiO2 interfacial ensemble sites compared to Pt/TiO2{100} and Pt/TiO2{101} catalysts, resulting in lower catalytic activity.

ACS CATALYSIS (2023)

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Article Chemistry, Physical

A novel synthesis of Porous Fe4N/carbon hollow microspheres for thin and efficient electromagnetic wave absorbers

Xuechen Liang et al.

Summary: Modulating the structure and morphology is crucial in creating high-performance electromagnetic absorbing materials. This study successfully obtained porous Fe3O4/carbon hollow microspheres and porous Fe4N/carbon hollow microspheres from Fe-glycerol hollow microspheres. The porous Fe4N/carbon hollow microspheres showed superior electromagnetic wave absorption performance compared to the porous Fe3O4/carbon hollow microspheres. The reasons for this performance improvement include the higher complex permittivity and complex permeability of magnetic Fe4N, as well as the multiple scattering and reflection of electromagnetic waves due to the porous hollow microspherical structure.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

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Review Materials Science, Multidisciplinary

Recent advances in microwave-absorbing materials fabricated using organic conductive polymers

Reza Peymanfar et al.

Summary: This review discusses the types of conductive polymers used as microwave-absorbing materials and their composites to enhance microwave-absorbing capability. It also explores recent advancements in synthetic strategies and structural properties of pure carbon-based microwave-absorbing materials and other conjugated structures with heteroatoms. The review dissects the predominant microwave-absorbing mechanisms among conductive polymers and their composites, as well as the special mechanisms for tuning microwave-absorbing characteristics. It sheds new light on architecting low-density and high-performance microwave-absorbing structures and offers prospects in tailoring conjugated polymers based on their dominant mechanisms.

FRONTIERS IN MATERIALS (2023)

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Article Chemistry, Physical

Defect and interface co-steering ultra-wide microwave absorption and superior thermal conductance of TiO2/Fe/C nanocomposites

Ran Ji et al.

Summary: In this study, TiO2/Fe/C nanocomposites were used as advanced heat conduction-microwave absorption integrated materials (HCMWAIMs) to solve the problems of electromagnetic interference and heat dissipation in miniaturized electronics. The TiO2/Fe/C nanocomposites were prepared through a simple one-step pyrolyzation route and exhibited excellent comprehensive capabilities. It is expected that these nanocomposites will find efficient applications in electronic devices.

APPLIED SURFACE SCIENCE (2023)

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Article Engineering, Environmental

Sea-urchin-like NiCo2S4 modified MXene hybrids with enhanced microwave absorption performance

Xiang Li et al.

Summary: Developing lightweight and high absorption capacity electromagnetic wave absorbing materials is an effective solution to electromagnetic wave pollution. This study successfully synthesized MXene/NCS hybrid materials with good absorption performance, and provided new ideas for designing and synthesizing lightweight and efficient electromagnetic wave absorbing materials.

CHEMICAL ENGINEERING JOURNAL (2023)

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Article Materials Science, Composites

Multi-scale integrated design and fabrication of ultra-broadband electromagnetic absorption utilizing multi-walled carbon nanotubes-based hierarchical metamaterial

Qian Zhou et al.

Summary: In this study, a novel strategy for broadband electromagnetic absorption was proposed by combining periodic patterns and hierarchical structures with gradient electromagnetic performance. The optimized MWCNTs/gypsum metamaterial achieved an average absorption intensity of -21.6 dB (>99.3% absorption) in the frequency band of 4-40 GHz. The proposed material provides insight for achieving high-performance absorption materials through its excellent impedance matching and multiple electromagnetic wave loss effects.

COMPOSITES SCIENCE AND TECHNOLOGY (2023)

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Article Chemistry, Physical

The microwave absorption performance of candle soots

Brittney Zimmerle et al.

Summary: This study investigates the microwave absorption of candle soot and its correlation with superhydrophobicity. It is found that heating changes the phase ratio and content of unpaired electrons in candle soot, which affects its microwave permittivity/permeability and reflection loss values. Candle soot exhibits interesting microwave absorption properties.

CARBON (2023)

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Article Engineering, Environmental

Interface compatibility engineering of Multi-shell Fe@C@TiO2@MoS2 heterojunction expanded microwave absorption bandwidth

Mengqiu Huang et al.

Summary: A hierarchical multi-shell Fe@C@-TiO2@MoS2 microsphere has been synthesized to extend the absorption bandwidth for microwave absorption materials. By tuning the types and numbers of dielectric shells, the complex permittivity of the core-shell microspheres is optimized, enhancing the absorption performance. The combination of magnetic core and multiple dielectric shells shows potential for high-performance microwave absorption materials.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Research progress on nanostructure design and composition regulation of carbon spheres for the microwave absorption

Xinting Chen et al.

Summary: This review discusses the characteristics and principles of microwave absorbing materials, with a focus on the research progress in nanostructure design and composition regulation of carbon spheres. The clever nanostructure design and synergistic effect among different components enable carbon spheres and their composites to exhibit superior microwave absorption performance.

CARBON (2022)

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Article Materials Science, Ceramics

Graphite-like carbon nitride (g-C3N4): A promising microwave absorber

Reza Peymanfar et al.

Summary: Electromagnetic pollution has become a global concern due to the increasing use and production of electronic devices that emit or are affected by electromagnetic waves. In order to mitigate this pollution and its hazards, microwave absorbing materials have been developed based on transmission line theory, taking into account their permeability and permittivity. Among these materials, two-dimensional dielectric nanostructures have gained attention due to their unique electromagnetic properties. Specifically, g-C3N4 nanosheets have shown exceptional microwave absorbing properties due to their conjugated structure.

CERAMICS INTERNATIONAL (2022)

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Article Materials Science, Ceramics

High-performance microwave absorber based on carbon-fibers@TiO2@SrFe12O19@PANI composite

Xiaolong Xiong et al.

Summary: In this research, TiO2 nanoparticles and their composites were synthesized and investigated for their electromagnetic radiation absorption performance in the X-band. The results show that the S4 composite, with polyaniline, exhibited better EM radiation capabilities compared to the S3 composite. Additionally, stacking S4 as the upper layer and S3 as the lower layer led to improved absorption performance.

CERAMICS INTERNATIONAL (2022)

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Article Materials Science, Ceramics

Ni-MOF/Ti3C2Tx derived multidimensional hierarchical Ni/TiO2/C nanocomposites with lightweight and efficient microwave absorption

Meng Wang et al.

Summary: Multidimensional hierarchical Ni/TiO2/C nanocomposites with excellent electromagnetic wave absorption properties were successfully fabricated through facile in-situ solvothermal assembly and annealing processes.

CERAMICS INTERNATIONAL (2022)

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Article Construction & Building Technology

Lightweight and broadband electromagnetic wave absorbing foamed cement-based composites incorporated with hybrid dielectric fibers

Gan Deng et al.

Summary: A novel lightweight electromagnetic wave absorption material was developed by incorporating carbon and polypropylene fibers into foamed cement matrix. The effects of fiber type, dosage, and hybrid combination on the wave absorption performance were investigated. The results showed that the foamed cement-based composite incorporated with hybrid dielectric fibers exhibited excellent absorption capacity, with a minimum reflection loss of -26.40 dB and a broad effective bandwidth of 10.30 GHz. The comprehensive electromagnetic wave absorption mechanism was also elucidated based on the unique porous structure.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Chemistry, Physical

A rational construction of TiO2/N-doped Carbon/NiMoO4 composites with multidimensional structure towards strong microwave absorption

Lin Chen et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Editorial Material Physics, Applied

Microwave absorption by carbon-based materials and structures

Polina Kuzhir et al.

JOURNAL OF APPLIED PHYSICS (2022)

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Article Materials Science, Multidisciplinary

Structure-dependent electromagnetic wave absorbing properties of bowl-like and honeycomb TiO2/CNT composites

Hua Jian et al.

Summary: This study fabricated bowl-like and honeycomb titanium dioxide/carbon nanotube (TiO2/CNT) composites and found that the bowl-like structure had advantages in dielectric polarization and multiple reflections, while the honeycomb structure had better impedance matching characteristics. The bowl-like composite exhibited a wide effective absorption band at 4.2 GHz and is suitable for lightweight and highly efficient electromagnetic wave absorbing materials.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

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Article Chemistry, Multidisciplinary

Construction of Ti3C2Tx/Co sphere/TiO2 nanocomposite for efficient electromagnetic interference shielding

Zhenjun Wang et al.

Summary: Two-dimensional layered Ti3C2Tx/Co spheres/TiO2 nanocomposite powders were prepared by heat treatment, which showed promising electromagnetic wave absorbing properties at specific temperature conditions. The material demonstrated effective electromagnetic wave absorption and has potential applications in the field of electromagnetic wave absorbers.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2022)

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Article Materials Science, Ceramics

In-situ growth of TiO2 nanoparticles on crumpled Ti3C2Tx with negative permittivity for electromagnetic interference shielding

Xiaodan Xu et al.

Summary: This study utilizes in-situ growth of TiO2 nanoparticles on the surface of Ti3C2Tx MXene to create TiO2/MXene heterointerfaces, improving the absorption characteristics of the material and enhancing its electromagnetic interference shielding performance. Additionally, the material exhibits negative permittivity, contributing to a reflection-dominant shielding mechanism.

CERAMICS INTERNATIONAL (2022)

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Article Engineering, Environmental

Highly reversible electrochemical magnesium/lithium insertion performance in TiO2(B) nanosheets with Ti cationic vacancies

Hongwei Bi et al.

Summary: Multivalent ion batteries hold promise for future energy storage. This study demonstrates the enhanced electrochemical performance of 2D cation-deficient TiO2(B) nanosheets through the substitution of oxygen with fluorine. The resulting D-TiO2(B) exhibits improved charge transfer, diffusion coefficient, and electrochemical kinetics, leading to high reversible capacity, long-cycling stability, and rate capability in both Mg-ion and Li-ion batteries.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Materials Science, Multidisciplinary

Broadband high-performance microwave absorption of the single-layer Ti3C2Tx MXene

Xuejiao Zhou et al.

Summary: This study investigates the electromagnetic wave response behavior of single-layer Ti3C2Tx MXenes and discovers their superior microwave absorbing capability, providing important guidance for the future development of MXene-based absorbers.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

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Article Chemistry, Multidisciplinary

A Sustainable and Low-Cost Route to Design NiFe2O4 Nanoparticles/Biomass-Based Carbon Fibers with Broadband Microwave Absorption

Wanxi Li et al.

Summary: This study prepared biomass-based carbon fibers using cotton fiber, hemp fiber, and bamboo fiber as carbon sources, and successfully loaded NiFe2O4 nanoparticles onto the fibers. The composition and structure of NiFe2O4/biomass-based carbon fibers were systematically studied, and the results showed optimized impedance matching and improved microwave absorption performance after loading the nanoparticles. Particularly, the effective bandwidth of NiFe2O4/carbonized cotton fibers reached 6.5 GHz with a minimum reflection loss of -45.3 dB when the weight percentage of NiFe2O4 nanoparticles was 42.3%. The enhancement of microwave absorption performance was attributed to appropriate electromagnetic parameters and a balance of impedance matching and electromagnetic loss.

NANOMATERIALS (2022)

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Article Chemistry, Physical

Design of carbon aerogels with variable surface morphology for electromagnetic wave absorption

Ning Liu et al.

Summary: By modifying the morphology of carbon aerogels, the electromagnetic wave absorption performance can be significantly improved. At low filling rates, the modified carbon aerogels can achieve high absorption bandwidth and absorption rate.

CARBON (2022)

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Article Engineering, Environmental

Role of percentage of {001} crystal facets in TiO2 supports toward the water-gas shift reaction over Au-TiO2 catalysts

Qianqian Pang et al.

Summary: Support effects are important in heterogeneous catalysis, but their effects can vary in different reactions. In this study, the role of {001} facet percentage in Au-TiO2 catalysts for the water-gas shift reaction was quantitatively analyzed, and it was found that an increase in this percentage decreased the catalytic activity but improved the cyclic stability.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Environmental

Biomass-derived materials: Promising, affordable, capable, simple, and lightweight microwave absorbing structures

Reza Peymanfar et al.

Summary: The ever-growing electronic devices producing or applying microwaves have raised global concern due to the increasing pollution they cause. Various microwave absorbing materials have been developed, including conjugated carbon allotropes and morphologies, which have fascinating characteristics such as electric conductivity and polarization capability. Biomass-derived materials have gained attention for their free and available resources, as well as their remarkable microwave absorbing properties.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Manufacturing

3D-printed TiO2-Ti3C2Tx heterojunction/rGO/PDMS composites with gradient pore size for electromagnetic interference shielding and thermal management

Guangde Liu et al.

Summary: In this paper, a Ti3C2Tx/GO frame with a vertical pore gradient was constructed using 3D printing technology. The TiO2-Ti3C2Tx heterojunctions were generated by thermal annealing to control the oxidation of the 3D frames. Composites of TiO2-Ti3C2Tx/rGO/PDMS were assembled by curing the annealed 3D frame with polydimethylsiloxane (PDMS), exhibiting high EMI SE and excellent thermal management performance. The composites have a unique multilayer-scale structure with rod-shaped TiO2 particles decorated on the Ti3C2Tx substrate and TiO2Ti3C2Tx/rGO stack, forming an amorphous porous gradient pore size structure. The effect of gradient pore size on EMI SE was studied using simulation. The designed composites showed a conductivity of up to 173.1 S/m, a thickness of 2 mm, and a density of 67 mg/cm3, demonstrating excellent EMI SE of 58 dB. The composites also exhibited excellent thermal management performance.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2022)

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Article Chemistry, Physical

Microwave selective heating ultrafast construction of coral-like TiO2-MXene/graphene hybrid architectures for high-performance lithium-ion battery

Richao Niu et al.

Summary: Graphene and MXenes have become popular choices for electrochemical energy electrode materials due to their large surface-area-to-volume ratio and high electrical conductivity. This study develops a microwave selective heating strategy for fast fabrication of high-quality coral-like porous MXene/graphene composite, which exhibits improved performance.

JOURNAL OF POWER SOURCES (2022)

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Article Materials Science, Ceramics

Ultrabroad band microwave absorption from hierarchical MoO3/TiO2/Mo2TiC2Tx hybrids via annealing treatment

Feiyue Hu et al.

Summary: This study presents the preparation of MoO3/TiO2/Mo2TiC2Tx hybrids by growing MoO3 and TiO2 oxides on Mo2TiC2Tx MXene. The hybrids exhibit excellent electromagnetic wave absorption performance and a broad effective absorption bandwidth when annealed at the appropriate temperature.

JOURNAL OF ADVANCED CERAMICS (2022)

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Article Computer Science, Information Systems

Reducing Hydrophilic Characteristics of Kraft Paper Insulation by Reinforcing With Surface Modified Rutile-TiO2 Nanoparticles

Mohammed K. Mahmood et al.

Summary: This study successfully improved the hydrophobic properties of kraft paper by reinforcing it with surface-modified rutile TiO2 nanoparticles. The experimental results showed that the nanofillers were well retained and dispersed, resulting in enhanced water resistance and dielectric properties of the reinforced kraft paper.

IEEE ACCESS (2022)

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Article Materials Science, Multidisciplinary

Enhanced microwave absorption properties of reduced graphene oxide/TiO2 nanowire composites synthesized via simultaneous carbonation and hydrogenation

Shuangqiang Shi et al.

Summary: High-performance microwave absorbing materials were prepared by combining reduced graphene oxide with hydrogenated TiO2 nanowires. By adjusting the weight content of TiO2 nanowires, the composites exhibited excellent microwave absorption performance and controlled complex permittivity.

JOURNAL OF MATERIALS CHEMISTRY C (2022)

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Article Chemistry, Physical

Biomimetic 3D coral reef-like GO@TiO2 composite framework inlaid with TiO2-C for low-frequency electromagnetic wave absorption

Wenting Wu et al.

Summary: By utilizing structural design, a biomimetic three-dimensional graphene oxide@TiO2 composite material was prepared with outstanding low-frequency electromagnetic absorption properties, showing versatility in microwave absorption, antimicrobial activities, low infrared emissivity, and application potential.

CARBON (2021)

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Article Chemistry, Inorganic & Nuclear

In Situ Dual-Template Method of Synthesis of Inverse-Opal Co3O4@TiO2 with Wideband Microwave Absorption

Chengwei Zhang et al.

Summary: A unique porous TiO2 with Co3O4 nanoparticles anchored in (Co3O4@TiO2) is prepared by a dual-templating method for promoting electromagnetic microwave absorption. The Co3O4@TiO2-2 with 25 wt % Co3O4 nanoparticles content displays a strong and ultrawide effective absorption band performance, with a reflection loss of -53.9 dB at 2.95 mm and a super broad effective absorption band of around 12.5 GHz at 5.0 mm. The dual-templating approach for a well-controlled porous structure could be a facial strategy for the development of high-performance electromagnetic wave absorbers.

INORGANIC CHEMISTRY (2021)

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Article Chemistry, Physical

Facile design and permittivity control of reduced graphene oxide foam/TiO2 3D composite towards lightweight and high-efficient microwave absorption

Yujing Zhang et al.

Summary: Through a hydrothermal process, the structure and composition of reduced graphene oxide foam were successfully modulated, leading to improved impedance matching and microwave absorption properties of the composite material. Throughout the experiment, desired performance of microwave absorbers was achieved by controlling dielectric variables without magnetic interferences.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Nanoscience & Nanotechnology

Effect of nitric acid treatment on the final low-frequency microwave absorption performance of TiO2/ZnFe2O4/ZnTiO3 nanocomposite

Pengfei Yin et al.

Summary: A novel low-frequency microwave absorbent TiO2/ZnFe2O4/ZnTiO3 nanocomposite was prepared and studied for its excellent microwave-absorbing capabilities. The absorption properties of the material depend on the pre-treated concentration of TiO2 and benefit from the synergistic effects of magnetic and dielectric losses. The composite shows promising potential for adjusting microwave absorption capabilities in low-frequency bands.

APPLIED NANOSCIENCE (2021)

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Article Chemistry, Physical

Multi-scale structural nitrogen-doped rGO@CNTs composites with ultra-low loading towards microwave absorption

Zhihao Sun et al.

Summary: A composite material of nitrogen-doped reduced graphene oxide and carbon nanotubes was prepared, showing remarkable microwave absorption performance due to the formation of conductive pathways, nest-like CNTs clusters, and abundant defect polarization within the composite. The multi-scale structure endowed the composite with well-matched impedance, rich loss modes, and strong losses, resulting in an effective bandwidth of 7.1 GHz with a minimum reflection loss of -49.4 dB at only 2 wt% loading.

APPLIED SURFACE SCIENCE (2021)

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Article Chemistry, Physical

Nanoelectromagnetic of a highly conductive 2D transition metal carbide (MXene)/Graphene nanoplatelets composite in the EHF M-band frequency

B. Aissa et al.

Summary: The study demonstrates the potential of a sandwich-like structure of a two-dimensional Ti3C2Tx MXene/Graphene nanoplatelets composites for electromagnetic interference shielding in the extreme high frequency M-band. By integrating graphene, the composite exhibits increased electrical conductivity and Hall carrier mobility, making it one of the most electrically conductive MXene based composites to date. The composite film shows high electromagnetic absorbance due to superior transport properties, dominant absorption mechanism, and multiple internal reflections from Ti3C2Tx and graphene multilayers configuration.

CARBON (2021)

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Article Engineering, Environmental

Excellent photocatalytic degradation of tetracycline over black anatase-TiO2 under visible light

Suqing Wu et al.

Summary: Black anatase-TiO2 shows higher efficiency in visible light photocatalytic tetracycline degradation compared to white TiO2 and N-doped TiO2, with a different degradation mechanism involving both O-2(-) and h(+) radicals.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Green & Sustainable Science & Technology

Difference in performance and mechanism for methylene blue when TiO2 nanoparticles are converted to nanotubes

Lin Niu et al.

Summary: This study synthesized TiO2 NTs using TiO2 NPs as raw materials and analyzed their differences in adsorption and photocatalytic performance. TiO2 NTs showed better adsorption performance and photocatalytic activity, but a slight decrease in photocatalytic efficiency due to changes in crystal structure. Under optimal conditions, TiO2 NTs can rapidly degrade MB through synergistic adsorption and photocatalysis.

JOURNAL OF CLEANER PRODUCTION (2021)

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Article Chemistry, Physical

Design of Ti3C2Tx/TiO2/PANI multi-layer composites for excellent electromagnetic wave absorption performance

Xuran Gao et al.

Summary: The Ti3C2Tx/TiO2/PANI composites exhibit excellent electromagnetic wave absorption properties with strong reflection loss, thin thickness, and wide absorption bandwidth, making them promising candidates for EMW absorbers.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

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Article Chemistry, Physical

Synthesis and Characterization of Manganese-Modified Black TiO2 Nanoparticles and Their Performance Evaluation for the Photodegradation of Phenolic Compounds from Wastewater

Muhammad Irfan et al.

Summary: The study successfully removed high concentrations of total phenolic compounds from TPOME by synthesizing Mn-B-TiO2, improving optical and electrical characteristics through tuning the band structure of TiO2 and manganese doping. The photodegradation efficiency reached its peak at 0.3 wt% Mn doping concentration, surpassing 48.17%.

MATERIALS (2021)

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Article Chemistry, Physical

Ultrafast Synthesis of Defective Black TiO2 via One-Step NaN3 Deflagration for High-efficiency Solar Water Evaporation

Peng Zheng et al.

Summary: The study successfully prepared black TiO2 with tunable defects of Ti3+/O-v using a facile method of NaN3 deflagration, leading to enhanced light absorption capability, high water evaporation rate, and conversion efficiency.

SURFACES AND INTERFACES (2021)

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Article Chemistry, Physical

Construction of low-frequency and high-efficiency electromagnetic wave absorber enabled by texturing rod-like TiO2 on few-layer of WS2 nanosheets

Deqing Zhang et al.

Summary: WS2/TiO2 hybrids were prepared through hydrothermal method, showing improved electromagnetic wave absorption properties for low-frequency bands. The addition of TiO2 nanosheets led to synergistic effects, enhancing EMA strength and expanding the bandwidth, ultimately reducing the effective EMA frequency band from high to low frequency. This study opens up new possibilities for designing efficient low-frequency EMA materials in the future.

APPLIED SURFACE SCIENCE (2021)

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Article Green & Sustainable Science & Technology

Towards high-performance battery systems by regulating morphology of TiO2 materials

Ting-Ting Wei et al.

Summary: This review summarizes the recent developments of TiO2 polymorphs with different crystalline structures as electrode materials for energy storage systems, discussing the synthesis routes, advantages, challenges, and application fields of TiO2 in various morphologies.

SUSTAINABLE MATERIALS AND TECHNOLOGIES (2021)

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Article Chemistry, Physical

Bimetallic MOFs-derived yolk-shell structure ZnCo/NC@TiO2 and its microwave absorbing properties

Ke Yang et al.

Summary: Bimetallic MOFs with core-shell morphology were prepared step by step, leading to the fabrication of yolk-shell composite wave absorbers coated with TiO2 shell layer. The absorber exhibited excellent microwave absorption performance due to multiple interface reflection and continuous interface/dipole polarization effects.

APPLIED SURFACE SCIENCE (2021)

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Article Engineering, Environmental

Enhanced dielectric polarization from disorder-engineered Fe3O4@black TiO2-x heterostructure for broadband microwave absorption

Xiaofeng Shi et al.

Summary: A novel core-shell Fe3O4@black TiO2-x (Fe3O4@b-TiO2-x) heterostructure with unique multi-interfacial structure was successfully fabricated via a surface treatment strategy in vacuum, exhibiting a broadband microwave absorption capability. The enhanced microwave attenuation is attributed to the introduction of outer disordered TiO2-x thin layer and the multiple interfaces constructed by Fe3O4-TiO2 and TiO2-TiO2-x, as well as defect dipoles encapsulated within black TiO2-x layer. This design may pave a way to design broadband microwave absorbers based on core-shell functional structure.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Biophysics

Multifunctional TiO2/SBA-15 mesoporous silica hybrids loaded with organic sunscreens for skin application: The role in photoprotection and pollutant adsorption with reduced sunscreen permeation

Yu-Chih Lin et al.

Summary: TiO2 in mesoporous silica (SBA-15) showed efficient UV protection and pollutant absorption. Different amounts of TiO2 affected the pore size of SBA-15. The formulation with TiO2 demonstrated enhanced skin protection and reduced skin damage in mice.

COLLOIDS AND SURFACES B-BIOINTERFACES (2021)

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Article Chemistry, Multidisciplinary

Origin of Colossal Dielectric Permittivity in (Nb plus Ga) Co-Doped TiO2 Single Crystals

Lei Wang et al.

Summary: Co-doped TiO2 polycrystalline ceramics exhibit remarkable dielectric behaviors, and utilizing single crystals for research helps to understand the origin and optimization of these properties. The doped single crystals showed significantly enhanced dielectric properties, attributed to localized electron-pinned defect dipoles instead of surface barrier layer capacitor effect, resulting in a large dielectric constant over a wide frequency range and low dielectric loss.

CRYSTAL GROWTH & DESIGN (2021)

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Review Materials Science, Multidisciplinary

Morphology and medium influence on microwave characteristics of nanostructures: A review

Reza Peymanfar et al.

Summary: The issue of electromagnetic pollution has raised global concerns due to the increasing use of artificial intelligence devices, 5G networks, and electronic devices emitting electromagnetic waves. Recent research has focused on creating microwave absorbing structures, particularly nanostructures, to counteract the harmful effects of electromagnetic waves. The manipulation of size, shape, defects, and medium of these absorbing structures have been shown to significantly impact microwave absorption properties, with nanostructures offering unique advantages.

JOURNAL OF MATERIALS SCIENCE (2021)

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Article Chemistry, Inorganic & Nuclear

A novel CeO2-TiO2/PANI/NiFe2O4 magnetic photocatalyst: Preparation, characterization and photodegradation of tetracycline hydrochloride under visible light

Lisi Xie et al.

Summary: The novel CeO2-TiO2/PANI/NiFe2O4 magnetic photocatalyst showed narrower band gap and better visible light response, achieving a degradation rate of 92.6% for tetracycline hydrochloride. It exhibited the highest photocatalytic reaction rate constant (0.037 min(-1)), significantly outperforming TiO2, CeO2-TiO2, and CeO2-TiO2/NiFe2O4.

JOURNAL OF SOLID STATE CHEMISTRY (2021)

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Article Materials Science, Ceramics

Recent advances in carbon nanotubes-based microwave absorbing composites

Xiaojun Chen et al.

Summary: Carbon nanotubes have emerged as a potential candidate to address issues related to electromagnetic pollution and interference, offering advantages like high dielectric loss and remarkable thermodynamic stability. Recent advances in CNTs-based microwave absorbing materials have shown promising prospects, particularly in the development of composites for better microwave absorption capabilities.

CERAMICS INTERNATIONAL (2021)

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Article Materials Science, Multidisciplinary

Ti3+ self-doped dark TiO2 nanoparticles with tunable and unique dielectric properties for electromagnetic applications

Yuchang Qing et al.

Summary: Ti4O7 ceramic nanoparticles were successfully synthesized through a solvothermal and annealing method, and mixed with polyimide (PI) to show high electrical conductivity and outstanding dielectric loss. These results suggest that highly conductive dark Ti4O7 composites are promising for designing absorbers and other EM applications.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Engineering, Environmental

Design and synthesis of TiO2/Co/carbon nanofibers with tunable and efficient electromagnetic absorption

Jing Qiao et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Article Chemistry, Physical

Controlled reduction of graphene oxide laminate and its applications for ultra-wideband microwave absorption

Kewen Pan et al.

CARBON (2020)

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Article Nanoscience & Nanotechnology

Sandwich-Like Fe&TiO2@C Nanocomposites Derived from MXene/Fe-MOFs Hybrids for Electromagnetic Absorption

Baiwen Deng et al.

NANO-MICRO LETTERS (2020)

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Article Engineering, Environmental

CoFe2O4/N-doped reduced graphene oxide aerogels for high-performance microwave absorption

Xiangyu Wang et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Article Chemistry, Physical

The mechanism of microwave response in layer-cofired Zn3Nb2O8-TiO2-Zn3Nb2O8 ceramic architecture

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