Oxygen Vacancy-Enhanced Centrosymmetric Breaking of SrFeO3-x for Piezoelectric-Catalyzed Synthesis of H2O2

Article Green & Sustainable Science & Technology

Strategies to improve photocatalytic activity of nanoscale zero valent iron decorated MoS2: Construction of novel S-scheme nanoflower heterojunction with advanced visible-light degradation of tetracycline

Xi Wu et al.

Summary: By photocatalysis, the passivation layers of Fe-0 were activated into semiconductors and S-scheme heterojunctions were constructed with MoS2, enhancing the efficiency of visible-light degradation of tetracycline.

JOURNAL OF CLEANER PRODUCTION (2023)

添加到收藏夹

Article Engineering, Environmental

Construction of a novel S-scheme heterojunction piezoelectric photocatalyst V-BiOIO3/FTCN and immobilization with floatability for tetracycline degradation

Ting Wu et al.

Summary: A high-performance piezoelectric photocatalyst was developed to improve the removal efficiency of tetracycline hydrochloride. The photocatalyst introduced a piezoelectric effect and constructed a heterojunction structure. The removal efficiency was further enhanced by ultrasound. The immobilized photocatalyst floated on the water surface, enabling easy recovery.

JOURNAL OF HAZARDOUS MATERIALS (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Optimizing the Pd Sites in Pure Metallic Aerogels for Efficient Electrocatalytic H2O2 Production

Xin Zhang et al.

Summary: A novel catalyst design strategy is reported to optimize the Pd sites in pure metallic aerogels for decentralized electrochemical production of hydrogen peroxide (H2O2). By tuning the geometric environments and electronic structures, isolated, single-atom-like Pd motifs are achieved in the Pd2Hg5 aerogel. Heterometal doping leads to a series of M-Pd2Hg5 aerogels, demonstrating tunability of the electronic structure of the Pd active sites. The optimized Au-Pd2Hg5 aerogel exhibits outstanding selectivity and electron transfer efficiency for H2O2 production.

ADVANCED MATERIALS (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Oxygen-Vacancy-Rich Piezoelectric BiO2-x Nanosheets for Augmented Piezocatalytic, Sonothermal, and Enzymatic Therapies

Lu Yang et al.

Summary: Piezocatalytic therapy is a new reactive oxygen species (ROS)-enabled therapeutic strategy, utilizing ultrasound (US) activated piezoelectric materials to generate ROS for tumor therapy. Oxygen-vacancy-rich BiO2-x nanosheets show excellent piezoelectric properties and exhibit peroxidase and oxidase-like activities. This system combines piezocatalysis, enzymatic, and sonothermal therapies for enhanced tumor treatment.

ADVANCED MATERIALS (2023)

添加到收藏夹

Article Chemistry, Physical

Low-valence B-site cation substitution triggering polarization and oxygen vacancy enhancement for elevating piezocatalytic activity on Bi2MoO6

Tong Chen et al.

Summary: Piezocatalysis is a promising field in catalysis, but it faces challenges of low catalytic efficiency due to rapid charge recombination and insufficient reactive sites. This study demonstrates the use of cation substitution in layered perovskite Bi2MoO6 to enhance the piezocatalytic performance and generate more reactive species.

APPLIED SURFACE SCIENCE (2023)

添加到收藏夹

Article Engineering, Environmental

Enhanced piezo-catalytic H2O2 production over Bi0.5Na0.5TiO3 via piezoelectricity enhancement and surface engineering

Yu Zhang et al.

Summary: This study utilized piezoelectricity enhancement and surface engineering to regulate Bi0.5Na0.5TiO3 (BNT) for efficient and stable piezo-catalytic H2O2 production. The Ag-loaded Bi0.5Na0.5TiO3- AgNbO3 solid solution (Ag/BNT-AN) displayed significantly improved piezo-catalytic activity through joint regulation of enhancing piezoelectricity and promoting O2 reduction and H2O oxidation reactions. The optimal Ag/BNT-AN catalyst achieved a H2O2 production rate 13 times higher than pure BNT under ultrasonic vibration, and could also synthesize H2O2 under simple stirring, demonstrating its potential for harnessing low-frequency mechanical energy.

CHEMICAL ENGINEERING JOURNAL (2023)

添加到收藏夹

Article Engineering, Environmental

Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant

Roberto Cestaro et al.

Summary: In this study, electrodeposited manganese oxides (MnyOx) films were used as a visible-light-driven photocatalyst for the removal and mineralization of Tetracycline (TC) antibiotics. The best performing manganese oxide showed 92.4% TC mineralization efficiency after 180 min of LED visible illumination. Hydroxyl radicals (center dot OH) were found to be the main active species responsible for the TC degradation. The degradation of the oxide surface structure was identified as the key factor limiting the photocatalytic activity.

CHEMICAL ENGINEERING JOURNAL (2023)

添加到收藏夹

Article Chemistry, Physical

Rational design of CdS/BiOCl S-scheme heterojunction for effective boosting piezocatalytic H2 evolution and pollutants degradation performances

Pingyu Hao et al.

Summary: In this study, CdS/BiOCl S-scheme heterojunction piezocatalysts were constructed and their performances in piezocatalytic hydrogen evolution and organic pollutants degradation were explored. The optimal CdS content in CdS/BiOCl was found to be 20%, which exhibited a superior piezocatalytic hydrogen generation rate compared to pure BiOCl and CdS. CdS/BiOCl also showed the highest reaction kinetics rate constant and degradation rate towards various pollutants.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Site Communication in Direct Formation of H2O2 over Single-Atom Pd@Au Nanoparticles

Rasmus Svensson et al.

Summary: Single atom alloy catalysts offer higher turnover frequencies and selectivities than monometallic catalysts. Pd embedded in Au nanoparticles was studied as a catalyst for the direct formation of H2O2 from O2 and H2 in an aqueous solution. The simulations revealed that Pd monomers facilitated H2 dissociation, while H2O2 was formed over undercoordinated Au sites. Tuning the nanoparticle composition and reaction conditions was found to enhance the selectivity towards H2O2. This approach is applicable for various hydrogenation reactions over single atom alloy nanoparticles.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2023)

添加到收藏夹

Article Multidisciplinary Sciences

Continuous symmetry breaking in a two-dimensional Rydberg array

Cheng Chen et al.

Summary: Spontaneous symmetry breaking is the basis of classifying phases of matter and their transitions, and continuous symmetry breaking leads to the emergence of gapless Goldstone modes that control the thermodynamic stability of the ordered phase. In this study, a two-dimensional dipolar XY model is realized using a programmable Rydberg quantum simulator, and the presence of long-range XY order is characterized. This work complements recent studies on Ising-type interactions showing discrete spin rotation symmetry using the Rydberg-blockade mechanism.

NATURE (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Strong Ferromagnetic Manipulation of SrTiO3 from CO2-Straining Effect on Electronic Structure Modulation

Lianyu Li et al.

Summary: Through the effect of supercritical carbon dioxide (SC CO2), cubic SrTiO3 is converted to tetragonal, leading to significant ferromagnetic enhancement. This work suggests that magnetic optimization can be achieved from SC CO2-induced electronic structure modulation.

SMALL (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Power-Free Electrochemical Degradation of Tetracyclines Contributed by Flexible Magnetoelectric Flag Wind Generators

Zichuan Liu et al.

Summary: A self-powered electrochemical system using flexible magnetoelectric flag generators is proposed for the degradation of organic contaminations in water without the need for a power supply.

ADVANCED FUNCTIONAL MATERIALS (2023)

添加到收藏夹

Article Engineering, Environmental

Dual-function oxygen vacancy of BiOBr intensifies pollutant adsorption and molecular oxygen activation to remove tetracycline hydrochloride

Wenhai Zhang et al.

Summary: This study investigates the role of oxygen vacancies in antibiotic adsorption and molecular oxygen activation. The researchers prepared BiOBr nanospheres with different contents of oxygen vacancies and found that the vacancies enhanced pollutant adsorption through ion exchange and facilitated degradation through faster charge transfer.

CHEMICAL ENGINEERING JOURNAL (2023)

添加到收藏夹

Article Engineering, Environmental

Integrated adsorption and photodegradation of tetracycline by bismuth oxycarbonate/biochar nanocomposites

Yidan Luo et al.

Summary: In this work, bismuth oxycarbonate (Bi2O2CO3) and biochar nanocomposites were prepared for synergistic adsorption-photodegradation of tetracycline (TC). The results showed that the composites exhibited stronger adsorption capacity and photocatalytic activity compared to Bi2O2CO3 alone. Among them, Bi2O2CO3/2.5 wt % biochar had the highest adsorption capacity for TC (173.0 mg/L) and the best combined removal rate of TC (84.7 %) in 60 minutes.

CHEMICAL ENGINEERING JOURNAL (2023)

添加到收藏夹

Article Chemistry, Physical

Synergistic effects of Bi2O3 and Ta2O5 for efficient electrochemical production of H2O2

Chenghang Jiang et al.

Summary: A m-Bi2O3/Ta2O5 electrocatalyst with high selectivity towards H2O2 has been successfully synthesized, exhibiting an outstanding selectivity of 94.7% compared to Ta2O5 (80.9%) and Bi2O3 (81.7%). The electrocatalyst also shows high H2O2 yield and Faraday Efficiency, and can efficiently deactivate bacteria. This study presents a high-selective electrocatalyst for the two-electron pathway of oxygen reduction reaction and provides a new perspective for electrocatalyst design.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

添加到收藏夹

Article Chemistry, Physical

Unraveling the dual defect effects in C3N5 for piezo-photocatalytic degradation and H2O2 generation

Cheng Fu et al.

Summary: An efficient piezo-photocatalyst (C3N5-x-CN) with enhanced piezo-photocatalytic performance was fabricated by introducing cyano groups and N vacancies into C3N5. The addition of dual-defect sites in C3N5 created an active catalytic surface, increasing the piezoelectricity and promoting carrier separation, resulting in improved piezo-photocatalytic performance. The system showed efficient removal of tetracycline and production of H2O2 under piezo-photocatalytic treatment.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

添加到收藏夹

Article Materials Science, Multidisciplinary

Oxygen-incorporated MoS2 catalyst for remarkable enhancing piezocatalytic H-2 evolution and degradation of organic pollutant

Xue-Er Ning et al.

Summary: A highly efficient piezocatalyst of oxygen-incorporated MoS2 (O-MoS2) was synthesized via hydrothermal process temperature modulation, exhibiting superior piezocatalytic H-2 evolution rate and degradation efficiency compared to pristine MoS2. The presence of oxygen in O-MoS2 was found to enhance active sites and optimize the hydrogen adsorption Gibbs free energy of MoS2, resulting in enhanced piezocatalytic efficiency. Theoretical calculations and experimental results supported the proposed piezocatalytic mechanism of O-MoS2.

RARE METALS (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Modulating the metal center in MIL-101 for the piezoelectric catalytic synthesis of hydrogen peroxide

Yatai Li et al.

Summary: Modulation of metal centers is an effective strategy for enhancing catalytic performance. Two structurally identical MOFs, MIL-101(Cr) and MIL-101(Fe), were synthesized with different metal centers. MIL-101(Cr) exhibited enhanced H2O2 yield due to the electron-donating ability of Cr. This study contributes to the rational design and optimization of MOF catalysts for catalytic reactions.

CHEMICAL COMMUNICATIONS (2023)

添加到收藏夹

Editorial Material Multidisciplinary Sciences

Breaking symmetry for piezoelectricity

Fei Li

SCIENCE (2022)

添加到收藏夹

Article Multidisciplinary Sciences

Induced giant piezoelectricity in centrosymmetric oxides

D-S Park et al.

Summary: This study breaks the crystallographic symmetry and induces large and sustainable piezoelectric effects in centrosymmetric materials. The experiment shows the generation of extraordinarily large piezoelectric responses in cubic fluorite gadolinium-doped CeO2-x films, which are two orders of magnitude larger than the responses observed in the presently best-known lead-based piezoelectric relaxor-ferroelectric oxide. This finding provides opportunities to design environmentally friendly piezoelectric materials.

SCIENCE (2022)

添加到收藏夹

Article Chemistry, Physical

Surface structure characterization of a (√5 x √5)-R26.6° reconstruction of strontium titanate (001) by X-ray photoelectron diffraction

A. Pancotti et al.

Summary: The surface composition of a (root 5 x root 5)-R26.6 degrees reconstruction of a strontium titanate (001) single crystal was characterized by X-ray photoelectron spectroscopy, while its atomic surface structure was determined by a combination of low energy electron diffraction and X-ray photoelectron diffraction. Experimental and theoretical XPD results suggested that the surface reconstruction has two possible terminations: 40% SrO and 60% TiO2.

SURFACE SCIENCE (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Rational Design of Coordination Bond Connected Metal Organic Frameworks/MXene Hybrids for Efficient Solar Water Splitting

Litong Shi et al.

Summary: Metal organic frameworks (MOFs) are widely used as photocatalysts, but carrier recombination limits their activity. In this study, carboxyl groups on MXene were used to coordinate with UiO-66-NH2(Zr/Ti) (UZT) and create a tightly connected UiO-66-NH2(Zr/Ti)/carboxyl-functionalized MXene (UZT/CFMX) heterostructure. This unique heterostructure showed efficient solar-driven photocatalytic performance for water splitting, with a hydrogen evolution rate much higher than other MOF-based photocatalysts.

ADVANCED FUNCTIONAL MATERIALS (2022)

添加到收藏夹

Article Chemistry, Physical

Insights into highly efficient photodegradation of poly/perfluoroalkyl substances by In-MOF/BiOF heterojunctions: Built-in electric field and strong surface adsorption

Jingzhen Wang et al.

Summary: In this study, novel In-MOF/BiOF heterojunctions were synthesized, characterized, and evaluated for their photocatalytic removal performance on PFASs. The results showed that 20% In-MOF/BiOF exhibited effective degradation of PFOA under illumination. The reaction rate constants correlated positively with the adsorption energies of PFASs on the catalyst. Additionally, the generation of built-in electric field at the interfaces enhanced the separation of photogenerated carriers and facilitated the catalytic performance.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

添加到收藏夹

Article Engineering, Environmental

Sea-Urchin carbon nitride with carbon vacancies (C-v) and oxygen substitution (O-s) for photodegradation of Tetracycline: Performance, mechanism insight and pathways

Hao Zhang et al.

Summary: Optimizing surface atom properties by regulating electron configuration is a promising strategy to improve the separation of electron-hole pairs in carbon nitride. The study prepared sea urchin carbon nitride with C-v and O-s mediated electronic structures, which exhibited high photocatalytic activity and stability towards tetracycline. In addition, crucial factors affecting photoactivity and the photodegradation mechanism were investigated.

CHEMICAL ENGINEERING JOURNAL (2022)

添加到收藏夹

Article Engineering, Environmental

Enhancement of synergistic effect photocatalytic/persulfate activation for degradation of antibiotics by the combination of photo-induced electrons and carbon dots

Weilong Shi et al.

Summary: By introducing modified nanosheet catalyst and combining photo-induced electrons, this study achieved efficient degradation of tetracycline in a persulfate-oxidation hybrid system, providing new ideas and strategies for the development of carbon dot-based composite photocatalysts.

CHEMICAL ENGINEERING JOURNAL (2022)

添加到收藏夹

Article Chemistry, Physical

Oxygen Reduction Electrocatalysis with Epitaxially Grown Spinel MnFe2O4 and Fe3O4

Alexandria R. C. Bredar et al.

Summary: Nanocrystalline MnFe2O4 and Fe3O4 thin-films were studied as electrocatalysts for the oxygen reduction reaction (ORR) in alkaline solutions. The results showed that, unlike nanocrystalline MnFe2O4, the diffusion-limited current for oxygen reduction was achieved at Fe redox features due to the low density of Mn surface termination and the poor conductivity of the MnFe2O4 film. This study revealed the influence of lattice mismatch on the growth and surface properties of thin-film catalysts and posed challenges for ORR catalysis research.

ACS CATALYSIS (2022)

添加到收藏夹

Article Chemistry, Physical

Design of piezoelectric ZnO based catalysts for ammonia production from N2 and H2O under ultrasound sonication

Fengping Peng et al.

Summary: In this study, ZnO microrods and ZnO-Ag heterostructures were designed and exhibited high activity in ammonia production under ultrasound sonication. The size and morphology of ZnO, as well as oxygen vacancies, were found to greatly impact the reaction. Loading Ag NPs further enhanced the reaction activity.

NANO ENERGY (2022)

添加到收藏夹

Article Nanoscience & Nanotechnology

Enhanced Piezocatalytic Activity in Bi1/2Na1/2TiO3 for Water Splitting by Oxygen Vacancy Engineering

Ashok Ranjan et al.

Summary: In this study, lead-free rhombohedral R3c bismuth sodium titanate (BNT) particles were synthesized using a sol-gel method and utilized as piezocatalysts with high production rates and efficiency in degrading organic pollutants.

ACS APPLIED MATERIALS & INTERFACES (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Enhanced Photoconductivity at Dislocations in SrTiO3

Maximilian Kissel et al.

Summary: This study reveals that dislocations in oxide semiconductors can enhance the photoconductivity and result in different global photoconductivity behavior. Additionally, indications for a bulk photovoltaic effect enabled by dislocation-surrounding strain fields are observed for the first time.

ADVANCED MATERIALS (2022)

添加到收藏夹

Article Multidisciplinary Sciences

Selective CO2 electroreduction to methanol via enhanced oxygen bonding

Gong Zhang et al.

Summary: This paper describes the construction of a molybdenum-based metal carbide catalyst that promotes the formation and adsorption of oxygen-bound intermediates, resulting in a high Faradaic efficiency of 80.4% for methanol production from carbon dioxide reduction.

NATURE COMMUNICATIONS (2022)

添加到收藏夹

Article Multidisciplinary Sciences

Spin-related symmetry breaking induced by half-disordered hybridization in BixEr2-xRu2O7 pyrochlores for acidic oxygen evolution

Gang Zhou et al.

Summary: This study proposes a new approach to optimize catalysts for acidic oxygen evolution reaction. By controlling the bonding interaction, the active sites of the catalyst are transformed from symmetric low-spin states to asymmetric high-spin states, resulting in higher reaction efficiency and stability.

NATURE COMMUNICATIONS (2022)

添加到收藏夹

Article Chemistry, Physical

ZnO with Controllable Oxygen Vacancies for Photocatalytic Nitrogen Oxide Removal

Reshalaiti Hailili et al.

Summary: Semiconductor-based photocatalysis is a promising method for air purification by removing nitrogen oxide (NO) pollutants. However, the efficiency of photocatalytic treatment is hampered by sluggish carrier separation, catalyst deactivation, and incomplete oxidation. In this study, various ZnO structures with deliberate surface defect constructions were fabricated to address these issues. The results showed that ZnO rich in oxygen vacancies exhibited significantly enhanced NO removal efficiency and fewer toxic byproducts compared to pristine and vacancy-poor ZnO. Furthermore, the surface defects promoted not only carrier separation but also molecular oxygen activation, resulting in the generation of strong oxidant superoxide radicals and improved efficiency. Density functional theory calculations confirmed the successful adsorption and activation of NO and molecular oxygen on the defective surface, further contributing to the enhanced NO conversions.

ACS CATALYSIS (2022)

添加到收藏夹

Article Chemistry, Physical

Symmetry-breaking triggered by atomic tungsten for largely enhanced piezoelectric response in hexagonal boron nitride

Taoyang Zhang et al.

Summary: The breakdown of crystal symmetry leads to lattice distortions and enhances the piezoelectric response. Traditional crystallographic considerations limit the scope of piezoelectric investigations. This study introduces a heavy ball-pressed-cloth strategy that significantly enhances the piezoelectric response of various materials.

NANO ENERGY (2022)

添加到收藏夹

Article Chemistry, Physical

Breaking the intrinsic activity barriers of perovskite oxides photocatalysts for catalytic CO2 reduction via piezoelectric polarization

Jie He et al.

Summary: In this study, a new method using piezoelectric polarization is reported to achieve durable and efficient CO2 reduction activity of various perovskite oxides. By introducing vibration energy, the redox potential of CO2 reduction and a piezoelectric field for CO2 adsorption and activation are established. This method breaks the limitation of intrinsic redox properties of perovskite oxides and allows for high productivity of CO2 conversion.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

添加到收藏夹

Article Chemistry, Physical

Symmetry-breaking induced piezocatalysis of Bi2S3 nanorods and boosted by alternating magnetic field

Feixue Gao et al.

Summary: In this study, the centrosymmetry of Bi2S3 nanorods is broken by introducing Si defects into the crystal lattice, enabling them to efficiently reduce Cr(VI) through piezocatalysis. Moreover, the application of an alternating magnetic field (AMF) greatly enhances the piezocatalytic reduction.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

添加到收藏夹

Article Chemistry, Physical

Water Enables Lattice Oxygen Activation of Transition Metal Oxides for Volatile Organic Compound Oxidation

Huayu Gu et al.

Summary: This study systematically investigates the mechanism of water in lattice oxygen activation of transition metal oxides. It demonstrates that water molecules can activate lattice oxygen to form hydroxyl species and attack electron-deficient carbon atoms of VOCs due to their strong nucleophilicity. This research is of great significance for understanding the role of water in catalysis, such as VOC combustion and water splitting.

ACS CATALYSIS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Stacking Fault Induced Symmetry Breaking in van der Waals Nanowires

Eli Sutter et al.

Summary: Breaking symmetry in van der Waals crystals through layer stacking offers a promising approach for designing new ferroelectric materials.

ACS NANO (2022)

添加到收藏夹

Article Chemistry, Applied

Engineering piezoelectricity and strain sensitivity in CdS to promote piezocatalytic hydrogen evolution

Jingjing Wang et al.

Summary: This study investigates the performance of CdS nanostructures in piezocatalytic hydrogen evolution. The results show that CdS nanorods exhibit higher piezocatalytic activity compared to CdS nanospheres, attributed to their larger piezoelectric coefficient and stronger mechanical energy harvesting capability.

CHINESE JOURNAL OF CATALYSIS (2022)

添加到收藏夹

Article Chemistry, Physical

A supramolecular H(12)SubPcB-OPhCOPh/TiO2 Z-scheme hybrid assembled via dimeric concave-ligand x-interaction for visible photocatalytic oxidation of tetracycline

Bing Wang et al.

Summary: A novel axially substituted supramolecular nanocrystalline subphthalocyanine H12SubPcB-OPhCOPh (SubPc-4) was successfully synthesized and self-assembled on TiO2 to form a Z-scheme photocatalytic system, showing high photoactivity and stability for degrading organic pollutants. The hybrid exhibited significantly higher degradation efficiency and retained photocatalytic activity after multiple cycles, indicating its potential application in wastewater treatment.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

添加到收藏夹

Article Chemistry, Physical

Preparation and piezoelectric catalytic performance of flexible inorganic Ba1-xCaxTiO3via electrospinning

Yang Yu et al.

Summary: Piezoelectric catalysis is a emerging research field, where nanoparticles and nanowires play an important role due to their specific surface area. Calcium doping can enhance the catalytic effect, while low calcination temperature can improve flexibility of the fiber membrane.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

添加到收藏夹

Article Chemistry, Physical