One-dimensional Z-scheme TiO2/WO3/Pt heterostructures for enhanced hydrogen generation

Gao, Hongquing, Zhang, Peng, Hu, Junhua, Pan, Jimin, Fan, Jiajie and Shao, Guosheng (2017) One-dimensional Z-scheme TiO2/WO3/Pt heterostructures for enhanced hydrogen generation. Applied Surface Science, 391 (Part B). pp. 211-217. ISSN 0169-4332

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Abstract

One-dimensional Z-scheme TiO2/WO3/Pt heterostructures were fabricated by integrating a facile electrospinning technique and subsequent annealing in air. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and UV–vis diffuse reflectance spectroscopy, were used to characterize the as-fabricated samples. The results showed that the H2-generation of the as-fabricated one-dimensional Z-scheme TiO2/WO3/Pt heterostructures (S2) was greatly enhanced compared with pure TiO2 nanofibers (S0) and TiO2/WO3 nanofibers (S1). The enhanced photocatalyst activities were mainly attributed to the solid-state Z-scheme photosynthetic heterojunction system with Pt nanoparticle as an electron collector and WO3 as a hole collector, leading to effective charge separation on these semiconductors, which were evidenced by electrochemical impedance spectroscopy (EIS) and photocurrent analysis.

Item Type:	Article
Additional Information:	This article belongs to a special issue of Applied Surface Science - 2nd International Symposium on Energy and Environmental Photocatalytic Materials, Vol.391 Part B, Copyright © 2016 Elsevier B.V.
Divisions:	University of Bolton Research Centres > Institute for Renewable Energy and Environmental Technologies
Depositing User:	Tracey Gill
Date Deposited:	10 Nov 2016 08:56
Last Modified:	10 Nov 2016 08:56
Identification Number:	10.1016/j.apsusc.2016.06.170
URI:	http://ubir.bolton.ac.uk/id/eprint/973

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