Facile synthesis of intercalated Z-scheme Bi2O4/g-C3N4 composite photocatalysts for effective removal of 2-Mercaptobenzothiazole: Degradation pathways and mechanism

Cui, Keyu; Wang, Xue; Tai, Meng; Gao, Baihui; Su, Bin

doi:10.1016/j.jtice.2020.03.007

Cited by 30 publications

(1 citation statement)

References 40 publications

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“…Of these methods, the construction of heterojunctions can simultaneously modulate the light absorption properties and improve the interfacial charge transfer efficiency, and has been confirmed to be a desirable strategy to enhance the photocatalytic performance of Bi 2 O 4 . A variety of Bi 2 O 4 ‐based heterojunctions such as TiO 2 /Bi 2 O 4 , 25 BiOBr/Bi 2 O 4 26 and g‐C 3 N 4 /Bi 2 O 4 , 27 have been reported.…”

Section: Introductionmentioning

confidence: 99%

Bi₂O₄ decorated with SnO₂ nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

Zhao

Chen

Hao

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND Bismuth tetraoxide (Bi2O4) has attracted increasing interest as a novel visible‐light‐driven photocatalyst. It suffers from some drawbacks, such as quick recombination of photogenerated electrons and holes, small specific surface area and few active sites due to submicron rod structure. RESULTS A novel and efficient binary heterojunction photocatalyst, in which zero‐dimensional (0D) SnO2 nanoparticles was anchored on the surface of one‐dimensional (1D) Bi2O4 micrometer rods, was successfully synthesized. The as‐prepared samples were characterized by X‐ray diffraction (XRD), scanning electron microscopy, transmission electron microscope, Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy. The photocatalytic activity of the synthesized photocatalysts was evaluated by photodegradation of tetracycline (TC) under visible‐light irradiation. The prepared 30‐SB composite (30 wt% SnO2/Bi2O4) exhibits the highest photocatalytic activity toward TC degradation. The removal efficiency of TC was up to 84.3% within 120 min. The rate constant k for the reaction of 30‐SB composite is 0.029017 min−1, which is 13.4 and 1.8 times as high as that of SnO2 and Bi2O4, respectively. CONCLUSION The significantly boosted photocatalytic activity is attributed to the formation of Z‐scheme heterojunctions between SnO2 and Bi2O4. Z‐scheme charge transfer promoted the effective separation of photogenerated carriers and ensured that the holes with higher oxidative activity and electrons with stronger reducibility participate in the production of •OH and •O2− as well as direct degradation of TC. This work will provide a new modification strategy for the potentially excellent photocatalyst Bi2O4. © 2022 Society of Chemical Industry (SCI).

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Section: Introductionmentioning

confidence: 99%

Bi₂O₄ decorated with SnO₂ nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

Zhao

Chen

Hao

et al. 2022

J of Chemical Tech & Biotech

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Simultaneous hydrogen production and photocatalytic pollutant removal: a review

Kumar,

Sharma,

Sharma

et al. 2024

Environ Chem Lett

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Pollution and the rising energy demand are two major society issues, requiring urgent solutions. Here, we review the simultaneous production of hydrogen and removal of pollutants, with a focus on mechanisms, synthesis of photocatalysts, and applications. Remarkably, this method utilizes organic pollutants as sacrificial agents for photocatalytic hydrogen production, thus both reducing pollution and producing energy. Metal-doped, cocatalyst-loaded, organic and inorganic composite, heterostructure and heterojunction photocatalysts are described. We present applications to the removal of antibiotics and organic dyes. Pollutant degradation rates range from 5.3 to 100%, with hydrogen evolution of 13.7–2724.89 μmol·g–1h–1.

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Fabrication of full-spectrum response Bi2O4/BiO2−x heterojunction as high-performance photocatalyst for organic pollutants removal by a two-step hydrothermal method

et al. 2022

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Facile synthesis of intercalated Z-scheme Bi2O4/g-C3N4 composite photocatalysts for effective removal of 2-Mercaptobenzothiazole: Degradation pathways and mechanism

Cited by 30 publications

References 40 publications

Bi₂O₄ decorated with SnO₂ nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

Bi₂O₄ decorated with SnO₂ nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

Simultaneous hydrogen production and photocatalytic pollutant removal: a review

Fabrication of full-spectrum response Bi2O4/BiO2−x heterojunction as high-performance photocatalyst for organic pollutants removal by a two-step hydrothermal method

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Facile synthesis of intercalated Z-scheme Bi2O4/g-C3N4 composite photocatalysts for effective removal of 2-Mercaptobenzothiazole: Degradation pathways and mechanism

Cited by 30 publications

References 40 publications

Bi2O4 decorated with SnO2 nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

Bi2O4 decorated with SnO2 nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

Simultaneous hydrogen production and photocatalytic pollutant removal: a review

Fabrication of full-spectrum response Bi2O4/BiO2−x heterojunction as high-performance photocatalyst for organic pollutants removal by a two-step hydrothermal method

Contact Info

Product

Resources

About

Bi₂O₄ decorated with SnO₂ nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

Bi₂O₄ decorated with SnO₂ nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation