Visible-light driven S-scheme Mn0.2Cd0.8S/CoTiO3 heterojunction for photocatalytic hydrogen evolution

Tianxia Liu, Kaicheng Yang, Haiming Gong and Zhiliang Jin

Renewable Energy, 2021, vol. 173, issue C, 389-400

Abstract: A novel S-scheme Mn0.2Cd0.8S/CoTiO3 photocatalytic system was formed. The morphology, microstructure, chemical state and optical behavior of Mn0.2Cd0.8S/CoTiO3 have been studied using SEM, XRD, TEM, UV–vis, PL and TRPL techniques, which proves that the existence of the S-scheme heterojunction accelerates the transfer of photogenerated carriers and the ability to capture and utilize visible light. The electrochemical test proved that the composite sample greatly reduces the overpotential of the hydrogen evolution reaction, thereby achieving ultra-high hydrogen evolution. In addition, the feasible mechanism of photocatalytic hydrogen evolution is described. This work will furnish fresh insights for the conception and construction of efficient binary heterojunction photocatalysts.

Keywords: Mn0.2Cd0.8S; CoTiO3; S-scheme; Photocatalytic hydrogen evolution (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:173:y:2021:i:c:p:389-400

DOI: 10.1016/j.renene.2021.03.146

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