NDLI: Controlled synthesis of thorny anatase TiO<sub>2</sub> tubes for construction of Ag–AgBr/TiO<sub>2</sub> composites as highly efficient simulated solar-light photocatalyst

Content Provider	Royal Society of Chemistry (RSC)
Author	Tian, Chungui Meng, Xiangying Pan, Kai Fu, Honggang Tian, Guohui Zhou, Wei Wang, Jian-Qiang Chen, Yajie Bao, Hong-Liang
Copyright Year	2012
Abstract	This work reports on a two-stage strategy towards the controlled Ag–AgBr deposition onto thorny anatase TiO2 tubes for excellent simulated solar-light photocatalytic activities. First, anatase TiO2 tubes with a thorny porous external surface were prepared using rod-like TiOSO4·2H2O as sacrificial template and a Ti source via a solvothermal process followed by annealing. The formation mechanism of the anatase TiO2 tubular precursor was investigated in detail. Then, the prepared anatase TiO2 tubes were used as a support for loading AgBr nanoparticles using the deposition–precipitation method, and the deposited AgBr was partially reduced to Agvia the calcination process to fabricate the Ag–AgBr/TiO2 tubular composites. X-Ray absorption near edge spectra (XANES), extend X-ray absorption fine structure (EXAFS) spectra and X-ray photoelectron spectroscopy (XPS) analyses indicated that both AgBr and Ag0 components coexist in the systems. Compared with conventional nanoparticles and nanotubes, there exist abundant microcavities in the roughly parallel nanothorns of the tubes, which can contribute to the stable deposition of the Ag–AgBr nanoparticles and the formation of effective nanojunctions. These composites exhibited superior photocatalytic activity in the degradation of phenol under simulated solar-light irradiation.
Starting Page	2081
Ending Page	2088
Page Count	8
File Format	HTM / HTML PDF
ISSN	09599428
Volume Number	22
Issue Number	5
Journal	Journal of Materials Chemistry
DOI	10.1039/c1jm13820k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Anatase Nucleic acid thermodynamics Silver bromide Calcination X-ray absorption near edge structure X-ray absorption fine structure Extended X-ray absorption fine structure X-ray photoelectron spectroscopy Photoemission spectroscopy Phenol
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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