文献类型：期刊文献

英文题名：Photocatalytic Degradation of Reactive Dyes Using the Novel Hexagonal Magnetic Titanium Dioxide Composites

作者：Shen, Yong-Miao[1];Zhi, Duo[1];Wang, Wei[2];Tao, Fei-Fei[1]

机构：[1]Shaoxing Univ, Dept Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Dept Civil Engn, Shaoxing 312000, Peoples R China

年份：2011

卷号：23

期号：11

起止页码：4871

外文期刊名：ASIAN JOURNAL OF CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000296218700027)、、Scopus(收录号：2-s2.0-80053416180)、WOS

基金：This research was financially supported by Foundation of Zhejiang Educational Committee of China (Grant No. Y200805544) and the National Science Foundation for Young Scientists of China (Grant No. 20901051).

语种：英文

外文关键词：Magnetic TiO(2); Magnetic separation; Reaction dye; Photocatalysis

外文摘要：The novel magnetic photocatalysts, TiO(2)/Fe(3)O(4) and TiO(2)/SiO(2)/Fe(3)O(4) composites were prepared for degradation of reactive dyes. The photoactive TiO(2) was deposited onto the magnetic Fe(3)O(4) or SiO(2)/Fe(3)O(4) cores by using a sol-gel coating technique. The morphologies and structures of the photocatalysts were characterized by transmission electron microscopy and X-ray diffraction. The photocatalytic activities of TiO(2)/Fe(3)O(4) under UV light irradation were investigated by studying the effects of the initial pH values of the solutions and irradiation times on the degradation rates of various of reactive dyes. Compared with TiO(2), the TiO(2)/Fe(3)O(4) and TiO(2)/SiO(2)/Fe(3)O(4) composites expressed excellent photocatalytic activities for various reactive dyes. The recycling experimental results showed that TiO(2)/SiO(2)/Fe(3)O(4) was a highly effective decolouring agent and could effectively be seperated from wastewater under the external magnetic field. After being recycled many times, the novel photocatalyst could hold on the degradation rate of 85% on reactive brilliant blue.