In-situ S-doped porous anatase TiO2 nanopillars for high-efficient visible-light photocatalytic hydrogen evolution. (21st January 2016)

• Record Type: Journal Article
• Authors: Xing, Zipeng; Li, Zhenzi; Wu, Xiaoyan; Wang, Guofeng; Zhou, Wei
• Is Part Of: International journal of hydrogen energy. Volume 41:Number 3(2016)
• Page Start: 1535
• Page End: 1541
• Publication Date: 2016-01-21
• Subjects: TiO2 nanopillar -- In-situ S-Doped -- Visible-light photocatalysis -- H2 evolution; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2015.12.033
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In-situ S-doped porous anatase TiO2 nanopillars are synthesized by a facile one-step thermal protection method. The prepared photocatalysts are characterized in detail by X-ray diffraction, Raman spectroscopy, N2 adsorption/desorption isotherms, UV–vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. The results indicate that the obtained TiO2 samples present porous nanopillar structure, which can maintain the anatase phase at 700 °C calcination. With the calcination temperatures increasing, the doped S atoms in the TiO2 surface decrease gradually. The TiO2 samples calcined at 700 °C (T700) exhibit the optimum visible-light photocatalytic activity, and 163.9 μmol h −1 g −1 of H2 evolution can be obtained. It can be attributed to the high anatase crystallinity, porous structure and S element introduction of T700. Therefore, the obtained photocatalysts will have the potential application in energy and environmental field. Graphical abstract: Highlights: A in-situ S-doped porous TiO2 nanopillar is prepared by one-step thermal protection. The obtained S-doped TiO2 show the high efficiency for H2 evolution by visible-light. The calcination temperature is a vital parameter for the S-doped TiO2 preparation.