4.5 Article

g-C3N4/Fe3O4 composites synthesized via solid-state reaction and photocatalytic activity evaluation of methyl blue degradation under visible light irradiation

Related references

Note: Only part of the references are listed.
Article Engineering, Chemical

Functional partition of Fe and Ti co-doped g-C3N4 for photo-Fenton degradation of oxytetracycline: Performance, mechanism, and DFT study

Cui Lai et al.

Summary: In this study, Fe and Ti co-doped graphitic carbon nitride (FTCN) with high catalytic ability was synthesized using a two-step calcination method. The photoelectrochemical results showed that FTCN had a reduced bandgap and promoted photocarrier transfer efficiency, leading to excellent performance in oxytetracycline (OTC) degradation (90% within 10 min). The main reactive oxygen species and intermediates of OTC in the photo-Fenton process were identified. Combining experimental data and density functional theory (DFT) provided a deep understanding of the mechanism. Interestingly, Fe and Ti were found to act as the main activation centers for H2O2 and O2, respectively, while few oxygen-containing metal active sites were involved in the activation process. The synergistic effect of bimetallic doping played a significant role in enhancing the photoFenton catalytic performance. Hopefully, this study can contribute to the development of new approaches for designing highly efficient multifunctional catalysts or dual single-atom catalysts.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

Article Materials Science, Multidisciplinary

Synergic effect among activated carbon/sulphur-assisted graphitic carbon nitride for enhanced photocatalytic activity

Asif Hussain et al.

Summary: In this study, commercially exhausted urea was used to synthesize activated carbon and sulphur-doped graphitic carbon nitride (GCN) layered structures for higher photocatalytic activities. The synthesized material contained a small amount of activated carbon, which did not accumulate with nitrogen to form GCN and result in a higher energy bandgap. However, through sulphur doping, the bandgap was successfully modified and reduced for visible light. The sulphur with activated carbon system along with GCN enhanced the synergetic contribution in degradation, increasing the reaction constant (K) due to the synergic effect. Importantly, the accumulation of sulphur with activated carbon and GCN altered the charge transfer route and enhanced optical absorption and higher photocatalytic activity, making it a novel approach for environmental remediation.

DIAMOND AND RELATED MATERIALS (2023)

Article Materials Science, Multidisciplinary

Investigation of transition metal-doped graphitic carbon nitride for MO dye degradation

Asif Hussain et al.

Summary: Metal-doped graphitic carbon nitride was synthesized as a superior photocatalyst for pollutant degradation. Among the different metal dopants, zinc-doped g-C3N4 exhibited the highest photocatalytic performance, achieving a degradation rate of 90% for Methyl Blue dye. The study mainly focuses on the photo-degradation of the dye and the photocatalytic mechanism.

DIAMOND AND RELATED MATERIALS (2023)

Review Chemistry, Analytical

A Comprehensive Review of Effective Adsorbents Used for the Removal of Dyes from Wastewater

Dhanya Vishnu et al.

Summary: This review paper explores the use of low-cost adsorbents in the removal of hazardous dye pollutants from industrial effluents. It highlights the importance of adsorption as a cost-effective method and the interest in nanoparticles for their high reactivity in removing dye pollutants. Various treatment technologies for dye removal are discussed, along with the advantages and limitations of different types of adsorbents such as agricultural waste, activated carbons, nanomaterials, and biomaterials.

CURRENT ANALYTICAL CHEMISTRY (2022)

Review Chemistry, Physical

Recent advances in BiOX-based photocatalysts to enhanced efficiency for energy and environment applications

Asif Hussain et al.

Summary: Bismuth oxyhalides (BiOX) nano-materials have attractive characteristics and show great potential in environmental remediation, energy conversion, and degradation of organic pollutants. Various BiOX morphologies have been synthesized to enhance their performance in different applications. The study of photocatalytic sites, quantum efficiency, charge separation, and light absorption efficiency of BiOX has contributed to higher photocatalytic activity. Strategies for enhanced photocatalytic activities, including simultaneous decontamination of wastewater and energy conversion, have been reviewed. This study aims to summarize the scientific and technological challenges in bismuth oxyhalides composites and propose potential applications of BiOX based photocatalysts.

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING (2022)

Article Chemistry, Multidisciplinary

Diverse morphological study for nonmetal-doped g-C3N4 composites with narrow bandgap for improved photocatalytic activity

Asif Hussain et al.

Summary: The synthesis of sulfur, phosphorus, and boron-doped graphitic carbon nitride through thermal decomposition of urea provides a cost-effective and environmentally friendly nonmetal material with excellent photocatalytic activity.

RESEARCH ON CHEMICAL INTERMEDIATES (2022)

Article Chemistry, Inorganic & Nuclear

Advances in the strategies for enhancing the photocatalytic activity of TiO2: Conversion from UV-light active to visible-light active photocatalyst

Isha Arora et al.

Summary: Advanced oxidation process, a green method for better environment, has been widely used in the past decades. Photocatalysis has been considered as an advanced oxidation strategy for wastewater treatment and environmental remediation. This literature study aims to enhance the activity of photocatalysts to absorb visible light range. Various modification strategies have been discussed, including metal/non-metal doping, sensitizer doping, heterojunction formation, semiconductor coupling, oxygen vacancies formation, cocatalyst loading, and effect of defect formation. Modified titanium dioxide in the visible spectrum has shown highly advantageous applications, including degradation of pollutants, hydrogen production, CO2 reduction, and antibacterial activity.

INORGANIC CHEMISTRY COMMUNICATIONS (2022)

Review Environmental Sciences

Recent developments of doped g-C3N4 photocatalysts for the degradation of organic pollutants

Xiaolu Liu et al.

Summary: Graphitic carbon nitride (g-C3N4) has high thermal stability and a moderate band gap, but its performance is limited by issues like insufficient absorption of visible light. Element doping is an effective strategy to enhance its photocatalytic properties and improve performance.

CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY (2021)

Article Chemistry, Multidisciplinary

Observation of Transition from Ferroelasticity to Ferroelectricity by Solvent Selective Effect in Anilinium Bromide

Da-Wei Fu et al.

Summary: This study reveals the unprecedented ability to regulate the transition from ferroelasticity to ferroelectricity in organic ferroelectrics through solvent selective effect, highlighting the important role of solvent effect in organic ferroelectrics.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Materials Science, Ceramics

Investigation of dielectric behavior in Ni0.7-xZn0.3MxFe2O4 (M = Mn/Co/Cu) ferrites by impedance spectroscopy

S. A. Mazen et al.

Summary: The electrical characteristics of Mn/Co/Cu-substituted Ni-Zn ferrites prepared using the citrate technique were studied in detail by ac impedance spectroscopy. The results showed a significant improvement in dielectric properties and the Ni-Zn-Cu ferrite series displayed the best dielectric performance, suggesting its suitability for high-frequency devices.

CERAMICS INTERNATIONAL (2021)

Review Biotechnology & Applied Microbiology

A critical review on advances in the practices and perspectives for the treatment of dye industry wastewater

Toral Shindhal et al.

Summary: Rapid industrialization has brought comfort but also environmental harm, particularly from industries like dye industry producing large quantities of hazardous wastewater. There is now a shift towards resource recovery and sustainable management of wastewater. Microbial degradation technology is seen as highly promising for resource recovery and sustainability in treating dye industry wastewater.

BIOENGINEERED (2021)

Article Chemistry, Physical

Nitrogen doped g-C3N4 with the extremely narrow band gap for excellent photocatalytic activities under visible light

Dandan Zhu et al.

Summary: In this study, nitrogen-doped g-C3N4 (NCN) with an extremely narrow band gap was prepared and applied to enhance the photocatalytic activity for phenol degradation. Experimental and theoretical results showed that nitrogen doping improved photogenerated carrier separation and charge transfer, leading to increased visible light absorption and enhanced photocatalytic performance. The introduction of foreign atoms in the matrix can be a strategy to enhance the photocatalytic activity of photocatalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Review Chemistry, Physical

Recent advances in anion doped g-C3N4 photocatalysts: A review

Sulagna Patnaik et al.

Summary: The rapid industrialization and globalization today have led to sustainable development of diversity, with photocatalytic nano-materials emerging to combat environmental pollution and energy crisis. Various modifications of g-C3N4 have been introduced to broaden its potential applications, with band gap engineering through elemental doping considered as a successful approach to modify its optical and electronic properties.

CARBON (2021)

Article Chemistry, Physical

Dielectric behavior of graphite, with assimilation of the AC permittivity, DC polarization and DC electret

Xiang Xi et al.

Summary: The dielectric behavior of polycrystalline graphite is influenced by factors such as grain size, resistivity, and inter-electrode distance. Smaller grain sizes lead to higher permittivity and electric field, while also increasing the speed of polarization, depolarization, and discharge/charge processes. The electric field and the reciprocal of the capacitance linearly increase with inter-electrode distance, indicating a model of dipoles in series.

CARBON (2021)

Review Infectious Diseases

Nanomaterials as drug delivery systems with antibacterial properties: current trends and future priorities

Khatereh Khorsandi et al.

Summary: This review highlights the mechanisms of action of nanoparticles in killing bacteria and their potential in overcoming multidrug-resistant bacteria. It discusses the characteristics and applications of organic and inorganic nanoparticles, emphasizing the role of nanotechnology in enhancing drug absorption, targeted drug delivery, and reducing side effects.

EXPERT REVIEW OF ANTI-INFECTIVE THERAPY (2021)

Article Materials Science, Ceramics

Effect of doping location induced anisotropy on thermophysical properties of dilute Fe2O3-Y2O3-ZrO2 solid solutions

Fangwei Guo et al.

Summary: The study investigated the influence of different doping locations on the properties of zirconia ceramics, with Fe3+/Fe2+ ions shown to occupy both substitution and interstitial sites simultaneously, significantly increasing tetragonality and local anisotropy of the FeY-TZP polycrystal. The t' phase transformation mechanism of the FeY-TZP compounds was quantitatively discussed in terms of coercive strain and stress. Contrary to predictions, the coefficient of thermal expansion and specific heat capacity of the FeY-TZP compounds unusually decreased, with the most significant reductions occurring in the 1.0 mol% Fe doping.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2021)

Article Environmental Sciences

Recent progress in g-C3N4, TiO2 and ZnO based photocatalysts for dye degradation: Strategies to improve photocatalytic activity

Meena Nemiwal et al.

Summary: The review discusses the issue of water contamination by dyes and explores the potential solution using semiconductor-assisted materials and renewable solar energy. By developing semiconductor composite and heterojunction systems, the efficiency and stability of photocatalysts have been enhanced.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Engineering, Electrical & Electronic

A study on the electrical and dielectric properties of SrGdxFe12-xO19 (x=0.00-0.05) nanosized M-type hexagonal ferrites

B. Unal et al.

Summary: The electrical and dielectric properties of Gd-substituted Sr hexaferrites were studied, showing that ac conductivity mainly depends on Gd3+ ion substitution ratios. Impedance analysis revealed that conduction mechanisms were mainly attributed to grain-grain boundaries in the NHFs. The dielectric constant of SrGdxFe12-xO19 NHFs exhibited a normal dielectric distribution with frequency due to varying substitution ratios.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2021)

Article Materials Science, Multidisciplinary

Enhanced the Efficiency of Photocatalytic Degradation of Methylene Blue by Construction of Z-Scheme g-C3N4/BiVO4 Heterojunction

Xiong Zhang et al.

Summary: Through the construction of Z-type g-C3N4/BiVO4 photocatalyst, the degradation performance of methylene blue was significantly improved due to enhancements in chemical structure, morphology, and electron transfer. This composite material exhibited extremely high catalytic stability and recyclability.

COATINGS (2021)

Article Chemistry, Multidisciplinary

Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study

Poonam Dwivedi et al.

Summary: This study successfully synthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves' water extract, forming ZnO-Fe3O4 heterojunctions. The photodegradation efficiency of the nanocomposites in degrading methylene blue was higher compared to monometallic ZnO and Fe3O4 nanoparticles.

NANOTECHNOLOGY REVIEWS (2021)

Article Engineering, Environmental

Fine-tuning internal electric field of BiOBr for suppressed charge recombination

Asif Hussain et al.

Summary: Semiconductor photocatalysis using solar energy to address environmental issues has garnered significant attention. The synthesis of BiOBr with induced IEF, oxygen vacancies, and layered structures has successfully controlled the photocatalytic reaction process and improved performance.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

Article Materials Science, Ceramics

Room temperature structural, dielectric, and conductivity properties of AlxCd1-xFe2O4 ferrites

Tugba Sasmaz Kuru

JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY (2020)

Review Chemistry, Multidisciplinary

Physicochemical Concepts of the Lithium Metal Anode in Solid-State Batteries

Thorben Krauskopf et al.

CHEMICAL REVIEWS (2020)

Article Materials Science, Multidisciplinary

A new quantitative analysis method for electromagnetic energy dissipation in microwave absorption materials

Zhou Liu et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2020)

Article Materials Science, Multidisciplinary

AC Impedance and Modulus Spectroscopic Studies of Pb(Zr0.35-xCexTi0.65) O3 (x=0.00, 0.05, 0.10, 0.15) Ferroelectric Ceramics

Balgovind Tiwari et al.

MATERIALS CHEMISTRY AND PHYSICS (2020)

Article Materials Science, Ceramics

Microstructures, magnetic, and dielectric properties of Ba-doped BiFeO3 nanoparticles synthesized via molten salt route

Heng Wu et al.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2019)

Article Chemistry, Physical

Study on the effect of Co doping concentration on optical properties of g-C3N4

Dianfeng Zhou et al.

CHEMICAL PHYSICS LETTERS (2019)

Article Engineering, Electrical & Electronic

Polymeric graphitic carbon nitride-barium titanate nanocomposites with different content ratios: a comparative investigation on dielectric and optical properties

Saurabh Pareek et al.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2018)

Article Materials Science, Multidisciplinary

Dielectric relaxation, complex impedance and modulus spectroscopic studies of mix phase rod like cobalt sulfide nanoparticles

J. H. Joshi et al.

MATERIALS RESEARCH BULLETIN (2017)

Article Materials Science, Multidisciplinary

Impedance spectroscopy studies on (Na0.5Bi0.5)0.94Ba0.06TiO3+0.3 wt% Sm2O3+0.25 wt% LiF lead-free piezoelectric ceramics

N. Zidi et al.

BULLETIN OF MATERIALS SCIENCE (2015)

Article Biochemical Research Methods

Solid phase extraction of magnetic carbon doped Fe3O4 nanoparticles

Jing Yang et al.

JOURNAL OF CHROMATOGRAPHY A (2014)

Article Materials Science, Multidisciplinary

Electrical characterization of zirconium substituted barium titanate using complex impedance spectroscopy

Priyanka et al.

BULLETIN OF MATERIALS SCIENCE (2013)

Article Engineering, Environmental

Photodegradation of quinoline in water over magnetically separable Fe3O4/TiO2 composite photocatalysts

Jieying Jing et al.

CHEMICAL ENGINEERING JOURNAL (2013)

Article Chemistry, Multidisciplinary

Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities

Ping Niu et al.

ADVANCED FUNCTIONAL MATERIALS (2012)

Article Chemistry, Physical

Magnetically Separable Fe3O4/TiO2 Hollow Spheres: Fabrication and Photocatalytic Activity

Shouhu Xuan et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2009)