ZnCdS-BiFeO3 heterojunction loaded with cobalt catalyst boosting photoelectrocatalytic hydrogen evolution

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2025-01-02 DOI:10.1007/s40843-024-3215-2

Ling Wang (, ), Qing Lou (, ), Haixia Qian (, ), Xiaoshuang Yin (, ), Ying Liu (, ), Wenzhong Yang (, ), Hui Xu (, )

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引用次数: 0

Abstract

The advancement of a Z-scheme photoelectrochemical (PEC) system for hydrogen production and water splitting holds significant promise in addressing the escalating global energy crisis. In this study, a ternary Co-ZnCdS-BiFeO₃ Z-scheme composite photocatalyst was used. By optimizing the ratio of BiFeO₃/ZnCdS, the photocatalytic activity of the material is enhanced, while enhancing the electron transfer efficiency and strengthening the stability of the photoelectric cathode. The Co(dmgBF₂)2(H₂O)₂ was selected as the co-catalyst to further improve the electron-hole separation efficiency and photocorrosion resistance. Under visible light irradiation, the hydrogen production rate of the PEC system can reach 4.03 mmol g⁻¹ h⁻¹. Under optimal conditions, applying a bias voltage of −0.1 V vs. RHE can produce −38.5 µA cm⁻². The photocatalytic current density of is as high as 13 times that of pure ZnCdS, greatly improving the hydrogen production efficiency and stability of the photocatalyst. The study offers a novel benchmark for the development of a high efficiency Z-scheme photocatalyst designed for water splitting and provides new insights into intrinsic resistance through PEC analyses.

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.