Novel ternary BiOI/g-C3N4/CeO2 catalysts for enhanced photocatalytic degradation of tetracycline under visible-light radiation via double charge transfer process

Jiang, Xueding; Lai, Shufeng; Xu, Weicheng; Fang, Jianzhang; Chen, Xin; Beiyuan, Jingzi; Zhou, Xiwu; Lin, Kai‐Chun; Liu, Junxing; Gong-cou, Guan

doi:10.1016/j.jallcom.2019.151804

Cited by 79 publications

(16 citation statements)

References 55 publications

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“…The pore diameter distribution curves of the photocatalysts show that the average pore diameters of the photocatalysts are in the range of 2 nm. The BET results reveal that surface area of the photocatalysts may not be the key factor affecting the catalytic activities of the photocatalysts [ 56 ].…”

Section: Resultsmentioning

confidence: 99%

Experimental and DFT Studies of Au Deposition Over WO3/g-C3N4 Z-Scheme Heterojunction

et al. 2019

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A typical Z-scheme system is composed of two photocatalysts which generate two sets of charge carriers and split water into H2 and O2 at different locations. Scientists are struggling to enhance the efficiencies of these systems by maximizing their light absorption, engineering more stable redox couples, and discovering new O2 and H2 evolutions co-catalysts. In this work, Au decorated WO3/g-C3N4 Z-scheme nanocomposites are fabricated via wet-chemical and photo-deposition methods. The nanocomposites are utilized in photocatalysis for H2 production and 2,4-dichlorophenol (2,4-DCP) degradation. It is investigated that the optimized 4Au/6% WO3/CN nanocomposite is highly efficient for production of 69.9 and 307.3 µmol h−1 g−1 H2 gas, respectively, under visible-light (λ > 420 nm) and UV–visible illumination. Further, the fabricated 4Au/6% WO3/CN nanocomposite is significant (i.e., 100% degradation in 2 h) for 2,4-DCP degradation under visible light and highly stable in photocatalysis. A significant 4.17% quantum efficiency is recorded for H2 production at wavelength 420 nm. This enhanced performance is attributed to the improved charge separation and the surface plasmon resonance effect of Au nanoparticles. Solid-state density functional theory simulations are performed to countercheck and validate our experimental data. Positive surface formation energy, high charge transfer, and strong non-bonding interaction via electrostatic forces confirm the stability of 4Au/6% WO3/CN interface.

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Section: Resultsmentioning

confidence: 99%

Experimental and DFT Studies of Au Deposition Over WO3/g-C3N4 Z-Scheme Heterojunction

et al. 2019

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“…1b. As for g-C 3 N 4 , stretching vibrations of N-H was observed at 3000-3400 cm − 1 [21] and stretching vibration of C-N heterocycles was signi cantly showed at 1200-1600 cm − 1 [22].…”

Section: Synthesis Of Photocatalystsmentioning

confidence: 92%

Constructing BiOBr/g-C3N4/Bi2O2CO3 Z-Scheme Photocatalyst With Enhanced Photocatalytic Activity

Zhang

Liu

Zhou

et al. 2021

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Novel camellia-structured Z-scheme BiOBr/g-C3N4/Bi2O2CO3 was simply prepared by a hydrothermal method and photodegraded Rhodamine B under visible light within 60 min with much higher degradation efficiency (98%) contrasted with pure BiOBr, g-C3N4 and Bi2O2CO3. Radical trapping experiments exhibited the main reactive species (·O2-) during degradation process. The formation of Z-scheme heterojunction improved rate of charge separation, enhanced absorption of visible light and thus promoted the photocatalytic activity. The Z-scheme heterojunction is a promising material for the removal of dye in effluents.

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“…This composite exhibited superior photocatalytic performance, which was far higher than that of either the single component or two component systems. For this photocatalytic BiOI/g-C 3 N 4 /CeO 2 heterojunction system, 91.6% of tetracycline was degraded in 120 min, owing to the double charge transfer process between the g-C 3 N 4 and the other catalysts in the ternary heterojunction and the enhanced separation efficiency of photogenerated electron-hole pairs [153].…”

Section: Coupling Biox and Bioy With G-c3n4mentioning

confidence: 99%

Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

et al. 2021

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Semiconductor-based photocatalysis has been identified as an encouraging approach for solving the two main challenging problems, viz., remedying our polluted environment and the generation of sustainable chemical energy. Stoichiometric and non-stoichiometric bismuth oxyhalides (BiOX and BixOyXz where X = Cl, Br, and I) are a relatively new class of semiconductors that have attracted considerable interest for photocatalysis applications due to attributes, viz., high stability, suitable band structure, modifiable energy bandgap and two-dimensional layered structure capable of generating an internal electric field. Recently, the construction of heterojunction photocatalysts, especially 2D/2D systems, has convincingly drawn momentous attention practicably owing to the productive influence of having two dissimilar layered semiconductors in face-to-face contact with each other. This review has systematically summarized the recent progress on the 2D/2D heterojunction constructed between BiOX/BixOyXz with graphitic carbon nitride (g-C3N4). The band structure of individual components, various fabrication methods, different strategies developed for improving the photocatalytic performance and their applications in the degradation of various organic contaminants, hydrogen (H2) evolution, carbon dioxide (CO2) reduction, nitrogen (N2) fixation and the organic synthesis of clean chemicals are summarized. The perspectives and plausible opportunities for developing high performance BiOX/BixOyXz-g-C3N4 heterojunction photocatalysts are also discussed.

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Novel ternary BiOI/g-C3N4/CeO2 catalysts for enhanced photocatalytic degradation of tetracycline under visible-light radiation via double charge transfer process

Cited by 79 publications

References 55 publications

Experimental and DFT Studies of Au Deposition Over WO3/g-C3N4 Z-Scheme Heterojunction

Experimental and DFT Studies of Au Deposition Over WO3/g-C3N4 Z-Scheme Heterojunction

Constructing BiOBr/g-C3N4/Bi2O2CO3 Z-Scheme Photocatalyst With Enhanced Photocatalytic Activity

Advanced Two-Dimensional Heterojunction Photocatalysts of Stoichiometric and Non-Stoichiometric Bismuth Oxyhalides with Graphitic Carbon Nitride for Sustainable Energy and Environmental Applications

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