期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 3, 页码 1508-1515出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.11.053
关键词
Vertically-heterostructured TiO2-Ag-rGO; Ternary nanocomposite; {001) facets; Hydrogen production
资金
- Australian Research Council [DP130100268, DP140103535, FT130100076]
- Monash Centre of Atomically Thin Materials (MCATM)
- ARC [LE110100223]
- Australian Research Council [FT130100076] Funding Source: Australian Research Council
TiO2 nanosheets with high ratio of {001} facets were coupled with reduced graphene oxide (rGO) nanosheets through the link of silver (Ag) nanoparticles, forming a novel ternary nanocomposite photocatalyst with a vertical heterostructure, TiO2-Ag-rGO. The vertical anchoring of TiO2-Ag nanosheets between rGO sheets was confirmed by transmission electron microscopy (TEM), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Due to excellent separation of electron hole pairs in the TiO2 nanosheets, enhanced electron transfer to rGO via Ag nanoparticles, the TiO2-Ag-rGO nanocomposite exhibited an outstanding performance in photocatalytic hydrogen production, with a hydrogen production rate of 593.56 Amol g(-1) h(-1). This study provides new insights to the development of Pt-free photocatalysts for hydrogen production. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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