Octahedral Co3O4/CdS/Cd0.805Zn0.195S yolk-shell heterojunction towards visible light photocatalytic H2 evolution/degradation enhancement via synergism of bimetallic affect and hole extraction

Jun Cao, Qiying Peng, Wenhui Yang, Xinyan Li, Jiaqi Pan, Mei Zhu and Chaorong Li

Renewable Energy, 2025, vol. 240, issue C

Abstract: The octahedral Co3O4/CdS/Cd0.805Zn0.195S yolk-shell nano-heterojunction with self-template auxiliary is synthesized via the hydrothermal-in situ sulfuration-chemical deposition. The Co3O4/CdS/Cd0.805Zn0.195S heterojunction exhibits signally enhanced visible light HER (∼5231.44 μmol g−1 h−1)/degradation (∼0.04274 min−1) than that of monomer CdS (∼21/∼5.3-folds), it mainly attributes to CdS/Cd0.805Zn0.195S heterojunction owns suitable potential gradient, Co3O4 co-catalyst owns hole extraction/introduction and negative charge adsorption, bimetallic affect owns high carrier migration/diffusion, this synergism can promote interfacial carrier driving to optimize the carrier efficiency, including increasing carrier generating, improving carrier transport, extending carrier lifetime, reducing carrier recombination, while the yolk-shell structure can provide numerous active sites for overpotential decrease and electron diffusion, shorten pathway for photocorrosion and structural stability optimization.

Keywords: HER; Yolk-shell structure; Bimetallic affect; Hole extraction (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:240:y:2025:i:c:s0960148124022869

DOI: 10.1016/j.renene.2024.122218

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