Bera, Susmita and Ghosh, Srabanti and Basu, Rajendra Nath (2020) Silver as solid-state electron mediator in MoS2/Ag-AgVO3 Z-Scheme heterostructures for photocatalytic H-2 generation. Journal of Alloys and Compounds, 830. Art No-154527. ISSN 0925-8388

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Abstract

Heterostructured photocatalysts have attracted enoromous research interest in H-2 generation through water splitting because of highly efficient interfacial charge-transfer characteristics of nanoarchitectures. Herein, Ag nanoparticles decorated AgVO3 nanorods and MoS2 nanosheets are combined to fabricate MoS2/Ag-AgVO3 heterostructures,in which Ag NPs act as a solid-state electron mediator. Owing to unique nanoarchitecture, MoS2/Ag-AgVO3 exhibited the best H-2 generation (reaches 38.6 mmol g(-1) in 2 h) whichis four times and twenty times higher than Ag-AgVO3 and bare MoS2 under visible light respectively. Transient photocurrent and Nyquist spectra reveal that the enhanced photocatalytic performance of MoS2/Ag-AgVO3 is mainly attributed to its effective carrier separation and transfer through the surfaces. Moreover, the band structures of the materials have been calculated from Mott-Schottky study, demonstrated a Z-scheme interfacial charge-transfer mechanism. This study describes a promising approach for harvesting solar energy to generate H-2 from water by designing an efficient Ag mediated Z-scheme heterostuctures. (C) 2020 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Electronics
Divisions:	Fuel Cell and Battery
Depositing User:	Bidhan Chaudhuri
Date Deposited:	05 Feb 2021 07:03
Last Modified:	05 Feb 2021 07:03
URI:	http://cgcri.csircentral.net/id/eprint/4912

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