title: Facile synthesis of high-thermostably ordered mesoporous TiO2/SiO2nanocomposites: An effective bifunctional candidate for removing arsenic contaminations.
abstract: High-thermostably ordered mesoporous TiO2/SiO2nanocomposites are successfully prepared through evaporation-induced self-assembly method combined with ethylenediamine bounding strategy and subsequent high-temperature calcinations (700°C). The prepared samples are characterized in detail by thermogravimetric-differential scanning calorimetry, X-ray diffraction, Raman, transmission electron microscopy and N2adsorption. The results indicate that the samples are ordered mesostructure and the presence of SiO2inhibits the anatase-to-rutile phase transformation at high temperature. Significantly, the experimental results show that the high-thermostably ordered mesoporous TiO2/SiO2nanocomposites play bifunctional roles on effectively adsorbing As (III) and completely oxidizing higher toxic As (III) to lower toxic As (V) under various pH values by one time. Moreover, after recycling for ten times the composites still keep wonderful photocatalytic and adsorption performance. The subtly nanostructured bifunctional composites will have broad application prospects in contaminated water treatment.
authors.affiliation: College of Chemistry and Materials Science, Ludong University, Yantai 264025, People's Republic of China.
authors.forename: Yubao
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, People's Republic of China. Electronic address: xzplab@163.com.
authors.forename: Zipeng
authors.initials: Z
authors.lastname: Xing
authors.affiliation: Department of Epidemiology and Biostatistics, Harbin Medical University, Harbin 150086, People's Republic of China. Electronic address: zhenzhenlee2014@163.com.
authors.forename: Zhenzi
authors.initials: Z
authors.lastname: Li
authors.affiliation: Department of Epidemiology and Biostatistics, Harbin Medical University, Harbin 150086, People's Republic of China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, People's Republic of China.
authors.forename: Guofeng
authors.initials: G
authors.lastname: Wang
authors.affiliation: Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, People's Republic of China. Electronic address: zwchem@hotmail.com.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
keywords: Adsorption; Bifunction; Mesoporous material; Photocatalysis; TiO(2)/SiO(2) nanocomposite