Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 70, Issue -, Pages 161-167Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2016.10.034
Keywords
Photocatalysts; Pt/TiO2-ZnO; Hydrogen production
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Pt/TiO2-ZnO photocatalytic materials were prepared for the generation of hydrogen gas from water splitting. The photocatalysts were characterized by X-ray diffraction (XRD), UV-visible spectra (UV-Vis), scanning electron microscope (SEM) and transmission electron microscope (TEM). The absorption wavelength of TiO2 was shifted to longer wavelength on Pt/TiO2-ZnO. A 400 W mercury arc lamp with a cutoff filter which filter out all the wavelengths under 400 nm as the visible light source. It reached up to the optimum value of 203 pmolh(-1)g(-1) on TiO2-ZnO (Ti/Zn = 10). A catalyst of 0.5 wt% Pt/TiO2-ZnO (Ti/Zn = 10) was used and a best hydrogen production rate through water splitting was reaching to 2150 mu molh(-1)g(-1). The 0.1 wt% Pt/TiO2-ZnO showed a satisfying long-term stability, and 88% and 77% of initial hydrogen productivity still remained after 7 days and 14 days, respectively. (C) 2016 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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