One-step solvothermal synthesis of N-doped TiO_2 nanoparticles with high photocatalytic activity in the reduction of aqueous Cr(Ⅵ)

作     者：Jing Li Min Yang Zun-Biao Jiang 

作者机构：School of Chemistry and Chemical EngineeringXuzhou Institute of Technology 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2014年第25卷第2期

页      面：283-286页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：funded by the cultivating project of Xuzhou Institute of Technology(No.XKY2012206) Innovative Entrepreneurial Training Program of college student in Jiangsu province (No.201311998068X) 

主　　题：vNanoparticles Semiconductors Functional Powder technology 

摘      要：N-doped TiO2 （N-TiO2） nanoparticles were synthesized via a one-step low temperature （180℃） solvothermal route, which adopted NH4NO3 as the nitrogen source. The structure, composition, BET specific surface area, and optical properties of the as-synthesized product were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, N2 adsorption- desorption isotherms, and UV-vis diffuse reflectance spectroscopy. In addition, its photocatalytic properties were tested by the reduction of aqueous Cr（VI） under UV and visible light （x 〉 420 rim） irradiation. It was observed that for the reduction of aqueous Cr（VI）, the as-synthesized N-TiO2 nanoparticles not only exhibited much higher photocatalytic activity than P25 TiO2 under UV light, but also exhibited remarkably high photocatalytic activity under visible light （λ 〉 420 nm）.