One-Step Sublimation and Epitaxial Growth of CdS-Cd Heterogeneous Nanoparticles on S-Doped MoO2 Nanosheets for Efficient Visible Light-Driven Photocatalytic H2 Generation

Hui Liu; Jiayuan Yu; Yuke Chen; Ziqian Zhou; Guowei Xiong; Lili Zeng; Haidong Li; Zhen Liu; Lili Zhao; Jingang Wang; Benli Chu; Hong Liu; Weijia Zhou

doi:10.1021/acsami.9b17216

One-Step Sublimation and Epitaxial Growth of CdS-Cd Heterogeneous Nanoparticles on S-Doped MoO₂ Nanosheets for Efficient Visible Light-Driven Photocatalytic H₂ Generation

ACS Appl Mater Interfaces. 2020 Jan 15;12(2):2362-2369. doi: 10.1021/acsami.9b17216. Epub 2019 Dec 31.

Authors

Hui Liu^{1

2

3}, Jiayuan Yu³, Yuke Chen², Ziqian Zhou³, Guowei Xiong², Lili Zeng³, Haidong Li⁴, Zhen Liu², Lili Zhao², Jingang Wang², Benli Chu¹, Hong Liu^{2

5}, Weijia Zhou^{2

3}

Affiliations

¹ School of Physics and Telecommunication Engineering , South China Normal University, Guangzhou Higher Education Mega Center , Guangzhou , Guangdong 510006 , P. R. China.
² Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR) , University of Jinan , Jinan 250022 , P. R. China.
³ Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy , South China University of Technology, Guangzhou Higher Education Mega Center , Guangzhou , Guangdong 510006 , P. R. China.
⁴ College of Materials Science and Engineering , Qingdao University , Qingdao 266071 , P. R. China.
⁵ State Key Laboratory of Crystal Materials , Shandong University , Jinan 250100 , P. R. China.

PMID: 31846290
DOI: 10.1021/acsami.9b17216

Abstract

As a green, pollution-free, and renewable clean energy source, photocatalytic H₂ production has attracted great attention. Here, epitaxial growth of pyramidal CdS-Cd nanoparticles on S-doped MoO₂ nanosheets (CdS-Cd/S-MoO₂) was prepared by one-step co-sublimation of CdS and MoO₃. The photogenerated electrons of CdS as a photocatalyst are transferred to Cd and S-MoO₂ as co-catalysts for H₂ production, which is observed by surface photovoltage (SPV) under visible light irradiation. At last, the obtained CdS-Cd/S-MoO₂ presented an efficient photocatalytic performance under the visible light (>420 nm) with a prominent H₂ generation rate of as high as 24.98 μmol h^-1 mg^-1, which is 11 times higher than that of the CdS-Cd nanoparticles (2.26 μmol h^-1 mg^-1), and it is superior than that of the CdS (1.51 μmol h^-1 mg^-1).

Keywords: co-catalyst; epitaxial growth; heterostructure; photocatalytic hydrogen generation; sublimation.