Plasmon Ag/CuInS2/BiVO4 core-shell decahedral S-scheme heterojunction superstructures for robust photocatalytic performance. (15th August 2023)

• Record Type: Journal Article
• Authors: Peng, Hui; Xing, Zipeng; Kong, Weifeng; Wu, Chunxu; Fang, Bin; Cui, Yongqian; Li, Zhenzi; Liu, Haixia; Zhou, Wei
• Is Part Of: Fuel. Volume 346(2023)
• Publication Date: 2023-08-15
• Subjects: Photocatalysis -- Core–shell structure -- S-scheme heterojunction -- Photocatalytic hydrogen production -- Surface plasmon resonance; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2023.128368
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: Plasma Ag/CuInS2 /BiVO4 core–shell decahedral S-scheme heterojunction is fabricated. It shows excellent visible-light-driven photocatalytic and photothermal performance. The core–shell interface and S-scheme heterojunction favors charge separation. The SPR effect of Ag particles extends light response range and photothermal effect. Abstract: Ternary plasmon Ag/CuInS2 /BiVO4 S-scheme core–shell heterostructures with decahedral morphology are synthesized by hydrothermal, solvothermal and photodeposition strategies. The combination of them increases the specific surface area and provides adequate surface-active spots for the photocatalytic reaction. Under visible light irradiation, the photocatalytic degradation rate of plasmon Ag/CuInS2 /BiVO4 for Bisphenol A in water is up to 98.8% and a hydrogen yield of 6.493 mmol h −1 which is several times higher than that of any pristine ones. The quantum efficiency at 420 nm light was 11.3%. Meanwhile, it also exhibits a strong inhibitory effect for Escherichia coli and Staphylococcus aureus in water due to the unique broad-spectrum bactericidal effect of Ag nanoparticles and the bactericidal effect of reactive oxygen radicals. The robust photocatalytic performance can be credited to the particular S-scheme core–shell heterojunction favoring spatial charge separation, the surface plasmon resonance of Ag nanoparticles extending long wavelength light response and obvious photothermal effect. This study presents a new tactic for manufacturing efficient S-scheme heterojunction photocatalysts for solar energy conversion.