Layered Metal Chalcogenide ZnIn2S4 Anchored with Nickel Metal Dots for Efficient Photocatalytic Production of Hydrogen Peroxide and Degradation of Sulfamethoxazole

Photocatalytic oxygen reduction reaction (ORR) through a two-electron pathway is a green, sustainable route for hydrogen peroxide (H2O2) production. An outstanding visible-light-driven photocatalyst ZnIn2S4 (ZIS) with anchoring nickel metal dots (Ni0) less than one nanometer, namely, Ni/ZIS, has bee...

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Veröffentlicht in:Industrial & engineering chemistry research 2024-03, Vol.63 (9), p.3827-3836
Hauptverfasser: He, Gan, Wang, Qiong-Yu, Xu, Zaixiang, Xing, Wen-Hao, Chen, Wei, Han, Zhangliang, Hu, Zhong-Ting, Wang, Jianguo
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Sprache:eng
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Zusammenfassung:Photocatalytic oxygen reduction reaction (ORR) through a two-electron pathway is a green, sustainable route for hydrogen peroxide (H2O2) production. An outstanding visible-light-driven photocatalyst ZnIn2S4 (ZIS) with anchoring nickel metal dots (Ni0) less than one nanometer, namely, Ni/ZIS, has been successfully synthesized for H2O2 production followed by effective degradation of sulfamethoxazole (SMX). As compared with the pristine, the Ni/ZIS H2O2 production capacity exhibit 5 times the H2O2 yield of >40.9 μmol/L in the presence of visible light illumination (λ = 420–630 nm). The light absorption capacity, photogenerated electron transfer rate, and lower recombination rate of photoelectron/hole pairs were improved through Ni metal dots, which was demonstrated in this study. Under the condition of visible light irradiation for 1 h, 1.5 mg/L SMX by 10 mg 1.0 wt % % Ni/ZIS was degraded over 93%. This study presents a facile strategy for enhancing photocatalysis of metal chalcogenide on H2O2 production in the visible-light wavelength. It has potential for water purification by consuming on-site H2O2 production under solar illumination.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.3c03837