Supporting Ultrathin ZnIn2 S4 Nanosheets on Co/N-Doped Graphitic Carbon Nanocages for Efficient Photocatalytic H2 Generation

Sibo Wang; Yan Wang; Song Lin Zhang; Shuang-Quan Zang; Xiong Wen David Lou

doi:10.1002/adma.201903404

Supporting Ultrathin ZnIn₂ S₄ Nanosheets on Co/N-Doped Graphitic Carbon Nanocages for Efficient Photocatalytic H₂ Generation

Adv Mater. 2019 Oct;31(41):e1903404. doi: 10.1002/adma.201903404. Epub 2019 Jul 25.

Authors

Sibo Wang¹, Yan Wang¹, Song Lin Zhang¹, Shuang-Quan Zang², Xiong Wen David Lou¹

Affiliations

¹ School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
² College of Chemistry and Molecular Engineering, Zhengzhou University, Henan, 450001, P. R. China.

PMID: 31347221
DOI: 10.1002/adma.201903404

Abstract

Ultrathin ZnIn₂ S₄ nanosheets (NSs) are grown on Co/N-doped graphitic carbon (NGC) nanocages, composed of Co nanoparticles surrounded by few-layered NGC, to obtain hierarchical Co/NGC@ZnIn₂ S₄ hollow heterostructures for photocatalytic H₂ generation with visible light. The photoredox functions of discrete Co, conductive NGC, and ZnIn₂ S₄ NSs are precisely combined into hierarchical composite cages possessing strongly hybridized shell and ultrathin layered substructures. Such structural and compositional virtues can expedite charge separation and mobility, offer large surface area and abundant reactive sites for water photosplitting. The Co/NGC@ZnIn₂ S₄ photocatalyst exhibits outstanding H₂ evolution activity (e.g., 11270 µmol h^-1 g^-1 ) and high stability without engaging any cocatalyst.

Keywords: N-doped carbon; ZnIn2S4; hollow structures; hydrogen evolution; photocatalysis.

Abstract

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