BiVO4, Bi2WO6 and Bi2MoO6 photocatalysis: A brief review

Liu, Xintong; Gu, Shaonan; Zhao, Yanjun; Zhou, Guowei; Li, Wenjun

doi:10.1016/j.jmst.2020.04.023

Cited by 257 publications

(83 citation statements)

References 244 publications

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“…Organic pollutants like colored dyes, antibiotics, and colorless organic matters in aquatic environments are now considered as threats for the natural environment and human health [ 1 , 2 , 3 ]. Especially, colored dyes are mainly heterocyclic organic compounds, which have N=N bonds and sulfonic group in their molecular structure.…”

Section: Introductionmentioning

confidence: 99%

A Highly Efficient and Stable Photocatalyst; N-Doped ZnO/CNT Composite Thin Film Synthesized via Simple Sol-Gel Drop Coating Method

et al. 2021

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The thin film of N-doped ZnO/CNT nanocomposite was successfully fabricated on soda lime glass substrate by a simple sol-gel drop-coating method. The structural, morphological, chemical, and optical properties of as prepared samples were characterized by a variety of tools such as X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Fourier Transform Infrared spectroscopy (FT-IR), and UV-visible spectroscopy. The hexagonal crystalline structure was confirmed from XRD measurement without any other impurity phase detection in samples. The N-doped ZnO/CNT composite showed excellent photo-catalytic activity towards cationic methylene blue (MB) dye degradation with 100% removal rate under UV light irradiation as compared to N-doped ZnO (65%) and pure ZnO (47.36%). The convincing performance has also been observed for the case of visible light irradiation. The enhancement of that photocatalytic activity might be due to narrowing the band gap as well as the reduction of electron–hole pair recombination in ZnO matrix with the incorporation of dopant nitrogen and CNT. It is assumed from the obtained results that N-doped ZnO/CNT nanocomposite thin film can be employed as an economically achievable and ecofriendly method to degrade dye with UV and visible light irradiation. Additionally, density functional theory (DFT) calculations were applied to explore the effect of N-doping on electronic structure of ZnO. The computational study has supported the experimental results of significant band gap contraction, which leads to the maximum absorption towards higher wavelength and no appreciable change of lattice parameters after doping. A conceivable photocatalytic mechanism of N-doped ZnO/CNT nanocomposite has been proposed as well.

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Section: Introductionmentioning

confidence: 99%

A Highly Efficient and Stable Photocatalyst; N-Doped ZnO/CNT Composite Thin Film Synthesized via Simple Sol-Gel Drop Coating Method

et al. 2021

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“…Hence, the development of green, sustainable and energy-efficient methods for energy production and pollutant detoxification is an outmost concern. In regard to this, semiconductor photocatlysis has gained enormous popularity as it can convert solar energy into some useful energy feedstocks and also act as a boon for environmental pollutant remediation [1][2][3][4][5][6][7][8]. However, the major difficulties faced in this area is the low efficiency of photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Crystal facet and surface defect engineered low dimensional CeO₂(0D, 1D, 2D) based photocatalytic materials towards energy generation and pollution abatement

2021

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“…Numerous solutions have been explored, including electrochemical Liu et al (2016), Albo et al (2017), thermochemical Erb and Zarzycki (2016), Gong et al (2016), and photochemical methods (Deng et al, 2020;Deng et al, 2021;Gogoi et al, 2021;Meng et al, 2021;Zhang et al, 2021b). Among them, photocatalytic methods are promising due to the sustainability of solar light (Chen et al, 2020;Liu et al, 2020;Xu et al, 2020b;Zhen et al, 2020;Liu et al, 2021a;Wei et al, 2021a;Zhang et al, 2021c). Specifically, photocatalytic CO 2 reduction can convert CO 2 into usable hydrocarbon fuels (Huo et al, 2021;Kang et al, 2021;Ke et al, 2021;Yang et al, 2021;Yang et al, 2021b;Zhang et al, 2021d).…”

Section: Introductionmentioning

confidence: 99%

DFT Study on Regulating the Electronic Structure and CO2 Reduction Reaction in BiOBr/Sulphur-Doped G-C3N4 S-Scheme Heterojunctions

Fei

Zhang

et al. 2021

Front. Nanotechnol.

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Photocatalytic CO2 reduction is a promising method to mitigate the greenhouse effect and energy shortage problem. Development of effective photocatalysts is vital in achieving high photocatalytic activity. Herein, the S-scheme heterojunctions composed by BiOBr and g-C3N4 with or without S doping are thoroughly investigated for CO2 reduction by density functional theory (DFT) calculation. Work function and charge density difference demonstrate the existence of a built-in electric field in the system, which contributes to the separation of photogenerated electron-hole pairs. Enhanced strength of a built-in electric field is revealed by analysis of Bader charge and electric field intensity. The results indicate that S doping can tailor the electronic structures and thus improve the photocatalytic activity. According to the change in absorption coefficient, system doping can also endow the heterojunction with increased visible light absorption. The in-depth investigation indicates that the superior CO2 reduction activity is ascribed to low rate-determining energy. And both of the heterojunctions are inclined to generate CH3OH rather than CH4. Furthermore, S doping can further reduce the energy from 1.23 to 0.44 eV, indicating S doping is predicted to be an efficient photocatalyst for reducing CO2 into CH3OH. Therefore, this paper provides a theoretical basis for designing appropriate catalysts through element doping and heterojunction construction.

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BiVO4, Bi2WO6 and Bi2MoO6 photocatalysis: A brief review

Cited by 257 publications

References 244 publications

A Highly Efficient and Stable Photocatalyst; N-Doped ZnO/CNT Composite Thin Film Synthesized via Simple Sol-Gel Drop Coating Method

A Highly Efficient and Stable Photocatalyst; N-Doped ZnO/CNT Composite Thin Film Synthesized via Simple Sol-Gel Drop Coating Method

Crystal facet and surface defect engineered low dimensional CeO₂(0D, 1D, 2D) based photocatalytic materials towards energy generation and pollution abatement

DFT Study on Regulating the Electronic Structure and CO2 Reduction Reaction in BiOBr/Sulphur-Doped G-C3N4 S-Scheme Heterojunctions

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BiVO4, Bi2WO6 and Bi2MoO6 photocatalysis: A brief review

Cited by 257 publications

References 244 publications

A Highly Efficient and Stable Photocatalyst; N-Doped ZnO/CNT Composite Thin Film Synthesized via Simple Sol-Gel Drop Coating Method

A Highly Efficient and Stable Photocatalyst; N-Doped ZnO/CNT Composite Thin Film Synthesized via Simple Sol-Gel Drop Coating Method

Crystal facet and surface defect engineered low dimensional CeO2(0D, 1D, 2D) based photocatalytic materials towards energy generation and pollution abatement

DFT Study on Regulating the Electronic Structure and CO2 Reduction Reaction in BiOBr/Sulphur-Doped G-C3N4 S-Scheme Heterojunctions

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Crystal facet and surface defect engineered low dimensional CeO₂(0D, 1D, 2D) based photocatalytic materials towards energy generation and pollution abatement