Preparation, characterization and activity evaluation of heterojunction ZrTi2O6/TiO2 photocatalyst

被引：18
作者：
Chen Shifu [1 ]
Zhang Huaye [1 ]
Yu Xiaoling [1 ]
Liu Wei [1 ]
Wang Junen [1 ]
Liu Qiangchun [2 ]
Chen Lei [3 ]
机构：
[1] Huaibei Normal Univ, Dept Chem, Huaibei 235000, Anhui, Peoples R China
[2] Huaibei Normal Univ, Dept Phys, Huaibei 235000, Anhui, Peoples R China
[3] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 124卷 / 2-3期
关键词：
Composite material; Nanostructures; ZrTi2O6/TiO2; Characterization; VISIBLE-LIGHT IRRADIATION; OXIDE HOLLOW SPHERES; HYDROTHERMAL SYNTHESIS; DOPED TITANIA; ZINC-OXIDE; DEGRADATION; TIO2-ZRO2; REDUCTION; DIOXIDE; ENHANCEMENT;
D O I：
10.1016/j.matchemphys.2010.08.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new heterojunction photocatalyst ZrTi2O6/TiO2 was synthesized by a sol-gel method using ZrOCl2 8H(2)O and tetrabutyl titanate [Ti(OC4H9)(4)] as the raw materials The structure and optical properties of the ZrTi2O6/TiO2 photocatalyst were characterized by X-ray powder diffraction (XRD) high-resolution transmission electron microscope (HR-TEM) and UV-Vis diffuse reflection spectrum (DRS) The photocatalytic activity of the photocatalyst was evaluated by photocatalytic reduction of Cr2O72- and photocatalytic oxidation of methyl orange (MO) The production of hydroxyl radicals ( OH) during the photocatalytic process was detected by a photoluminescence (PL) technique using terephthalic acid as a probe molecule The results showed that photocatalytic activity of the ZrTi2O6/TiO2 photocatalyst (mole ratio of Zr/Ti is 1 1 heat treatment at 600 degrees C for 2 h) was higher than that of other samples and pure-TiO2 The heterojunction between ZrTi2O6 and TiO2 was confirmed by HR-TEM And the mechanism of the increased photocatalytic activity was also discussed (C) 2010 Elsevier B V All rights reserved
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页码：1057 / 1064
页数：8
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