期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 27, 期 -, 页码 273-279出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2014.06.051
关键词
Composite materials; Nanostructures; Graphene; Visible light catalysis
A novel photocatalyst of graphene-titania dioxide nanotube (GN-TNT) composites was prepared using a simple hydrothermal reaction with ascorbic acid as a reducing agent. High resolution transmission electron microscope (HR-TEM), fourier transform infrared spectrometer (FT-IR), thermo gravimetric analyzer (TGA) and N-2 adsorption/desorption analyzer (BET) methods were used to assess the morphologies and structures of as synthesized materials. HR-TEM analysis further confirmed the presences of graphene and titanium (TiO2) nanotubes in the nanocomposite photocatalyst. The results exhibited that photocatalytic performance of a GN-TNT photocatalyst significantly improved under visible light.. In addition, the exisLence of a competitive effect. between As3+ and reactive black 5 (RBK5) molecules in the mixed solution was found. The photocatalytic process is also discussed in this paper. (C) 2014 Elsevier Ltd. All rights reserved.
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