Photo-Fenton and oxygen vacancies' synergy for enhancing catalytic activity with S-scheme FeS2/Bi2WO6 heterostructure

Ye, Jin; Zhang, Yuanyuan; Wang, Juan; Liu, Shuang; Chang, Yuan‐Hang; Xu, Xianglian; Feng, Chunte; Xu, Jian; Guo, Li; Xu, Jiating; Fu, Yujie

doi:10.1039/d2cy00610c

Cited by 12 publications

(4 citation statements)

References 52 publications

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“…Both single photocatalyst or conventional heterojunction have certain limiting factors for photocatalytic generation of H2O2, such as redox abilities, carrier migration and their recombination, etc. In view of the above factors, the new type Sscheme heterojunction can eliminate the defects of conventional heterojunction system and propose an effective mechanism to explain the carrier migration pathways in heterojunction photocatalyst [56][57][58][59] . Theoretically, the S-scheme photocatalytic system is formed by an oxidized photocatalyst (OP) and a reduced photocatalyst (RP).…”

Section: Principle Of S-scheme Heterojunctionmentioning

confidence: 99%

Review of S-Scheme Heterojunction Photocatalyst for H2O2 Production

Zhang¹,

Li²,

Yuan³

et al. 2023

Acta Physico Chimica Sinica

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Rapid industrialization throughout the 20th and 21st centuries has led to the excessive consumption of fossil fuels to satisfy global energy demands. The dominant use of these fuel sources is the main cause of the ever-increasing environmental issues that greatly threaten humanity. Therefore, the development of renewable energy sources is fundamental to solving environmental issues. Solar energy has received widespread attention over the past decades as a green and sustainable energy source. Solar radiation-induced photocatalytic processes on the surface of semiconductor materials are able to convert solar energy into other energy sources for storage and further applications. However, the preparation of highly efficient and stable photocatalysts remains challenging. Recently, a new step-scheme (S-scheme) carrier migration mechanism was reported that solves the drawbacks of carrier migration in conventional heterojunction photocatalysts. The S-scheme heterojunction not only effectively solves the carrier migration problem and achieves fast separation but also preserves the powerful redox abilities and improves the catalytic performance of the photocatalytic system. To date, various S-scheme heterojunctions have been developed and employed to convert solar energy into useful chemical fuels to decrease the reliance on fossil fuels. Furthermore, these systems can also be used to degrade pollutants and reduce the harmful impact on the environment associated with the consumption of fossil fuels, including H2 evolution, pollutant degradation, and the reduction of CO2. H2O2 has been used as an effective, multipurpose, and green oxidizing agent in many applications including pollutant purification, medical disinfection, and chemical synthesis. It has also been used as a high-density energy carrier for fuel cells, with only water and oxygen produced as by-products. Photocatalytic technology provides a low-cost, environmentally friendly, and safe way to produce H2O2, requiring only solar energy, H2O, and O2 gas as raw materials. This paper reviews new S-scheme heterojunction designs for photocatalytic H2O2 production, including g-C3N4-, sulfide-, TiO2-, and ZnO-based S-scheme heterojunctions. The main principles of photocatalytic H2O2 production and the formation mechanism of the S-scheme heterojunction are also discussed. In addition, effective advanced characterization methods for S-scheme heterojunctions have been analyzed. Finally, the challenges that need to be addressed and the direction of future research are identified to provide new methods for the development of high-performance photocatalysts for H2O2 production.

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Section: Principle Of S-scheme Heterojunctionmentioning

confidence: 99%

Review of S-Scheme Heterojunction Photocatalyst for H2O2 Production

Zhang¹,

Li²,

Yuan³

et al. 2023

Acta Physico Chimica Sinica

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“…6 Hybrid AOP processes developed based on these techniques, such as photo-Fenton, have the advantages of rapid reaction, simple operation, high degradation rate, and green economy. [7][8][9] In particular, using solar energy as the driving force in the Fenton reaction may improve degradation by producing a synergistic effect. 10 An ideal photocatalyst should possess superior catalytic activity, high stability, and excellent recyclability.…”

Section: Introductionmentioning

confidence: 99%

Novel hierarchical porous Fe₂O₃@GA composites for solar-Fenton catalysis of dyes

Li,

Qin,

Zhang

et al. 2024

Catal. Sci. Technol.

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“…Compared with metal–organic frame polymers, the synthesis process through inorganic catalysts is simple, and Bi 2 WO 6 of the Aurivillius family has attracted widespread attention. 38–43 Bi 2 WO 6 has stable physicochemical properties, which have been applied in fields such as CO 2 reduction, 44 water oxidation, 45 the electrocatalytic production of NH 3 , 46 multiferroicity at room temperature, 47 pollutant photodegradation 48,49 and negative differential resistance. 50 Powder Bi 2 WO 6 needs to be dispersed in a solution during the dye degradation process, which brings inconvenience to reuse.…”

Section: Introductionmentioning

confidence: 99%

Design of an interface heating device based on polydivinylbenzene/SiO₂/Bi₂WO₆and its visible light response performance for water purification

Miao

Zhao

Ren

et al. 2023

Phys. Chem. Chem. Phys.

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Photo-Fenton and oxygen vacancies' synergy for enhancing catalytic activity with S-scheme FeS₂/Bi₂WO₆ heterostructure

Abstract: Using calcination and solvothermal methods, a series of FeS2/Bi2WO6 heterojunctions were prepared by coupling FeS2 into the surface oxygen vacancies enriched Bi2WO6. The prepared catalysts were used as photo-Fenton catalysts...

Cited by 12 publications

References 52 publications

Review of S-Scheme Heterojunction Photocatalyst for H<sub>2</sub>O<sub>2</sub> Production

Review of S-Scheme Heterojunction Photocatalyst for H<sub>2</sub>O<sub>2</sub> Production

Novel hierarchical porous Fe₂O₃@GA composites for solar-Fenton catalysis of dyes

Design of an interface heating device based on polydivinylbenzene/SiO₂/Bi₂WO₆and its visible light response performance for water purification

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Photo-Fenton and oxygen vacancies' synergy for enhancing catalytic activity with S-scheme FeS2/Bi2WO6 heterostructure

Abstract: Using calcination and solvothermal methods, a series of FeS2/Bi2WO6 heterojunctions were prepared by coupling FeS2 into the surface oxygen vacancies enriched Bi2WO6. The prepared catalysts were used as photo-Fenton catalysts...

Cited by 12 publications

References 52 publications

Review of S-Scheme Heterojunction Photocatalyst for H<sub>2</sub>O<sub>2</sub> Production

Review of S-Scheme Heterojunction Photocatalyst for H<sub>2</sub>O<sub>2</sub> Production

Novel hierarchical porous Fe2O3@GA composites for solar-Fenton catalysis of dyes

Design of an interface heating device based on polydivinylbenzene/SiO2/Bi2WO6and its visible light response performance for water purification

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Product

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About

Photo-Fenton and oxygen vacancies' synergy for enhancing catalytic activity with S-scheme FeS₂/Bi₂WO₆ heterostructure

Novel hierarchical porous Fe₂O₃@GA composites for solar-Fenton catalysis of dyes

Design of an interface heating device based on polydivinylbenzene/SiO₂/Bi₂WO₆and its visible light response performance for water purification