摘要
为了探究煅烧温度和Fe离子掺杂浓度对TiO_(2)纳米粉体晶体结构和光催化性能的影响,以TiCl_(4),NH_(4)OH,Fe(NO_(3))_(3)·9H_(2)O为原料,采用共沉淀法成功制备了Fe掺杂TiO2纳米粒子,并通过XRD、UV-Vis等测试手段对样品进行了表征.结果表明:(1)TiO2纳米粉体的晶粒尺寸随煅烧温度升高而增大;(2)粉体的光催化效率随煅烧温度升高先增加后降低,450℃时达到最佳值,此时粉体为单一锐钛矿晶体结构;(3)Fe掺杂可抑制金红石型TiO_(2)的形成,掺杂浓度应控制在合适范围内,当Fe掺杂浓度为0.1%时,TiO2光催化效率最高.
To investigate the effects of calcination temperature and iron doping concentration on its crystal structure and photocatalytic properties of TiO_(2) nanopowders,the Fe-doped TiO_(2) nanoparticles were successfully prepared by co-precipitation method using TiCl_(4),NH_(4)OH and Fe(NO_(3))_(3)·9H_(2)O as precusors.The samples were characterized by XRD and UV-Vis testing methods.The following conclusions are obtained from experiment results.The crystalline size of the Fe doped TiO_(2) nanoparticles is increased with the rise of the calcination temperature.The photocatalytic efficiency of the nanoparticles is increased first and then decreased with the rise of the calcination temperature,and the single anatase TiO_(2) crystal structure and the optimal photocatalytic performance are achieved at the calcination temperature of 450℃.The Fe doping concentration should be controlled within a suitable range in order to obtain the best photocatalytic performance,and the optimal Fe doping concentration is 0.1%.
作者
王竞
郭玉
王祉诺
李孝通
刘世民
WANG Jing;GUO Yu;WANG Zhinuo;LI Xiaotong;LIU Shiming(School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China)
出处
《大连交通大学学报》
CAS
2021年第2期92-97,共6页
Journal of Dalian Jiaotong University
基金
辽宁省自然科学基金资助项目(2019-ZD-0096)。
