摘要
采用一步凝胶煅烧法制备出了含氧空位的褐色二氧化钛,采用XRD、TEM、紫外可见漫反射吸收光谱、傅里叶红外吸收光谱、X射线光电子能谱对其进行了表征。光催化结果显示,300℃制备的褐色TiO_(2)的可见光催化活性高于500℃制备的白色TiO_(2)及商业P25,20min内将8mg/L结晶紫水溶液完全降解,80min将16mg/L结晶紫水溶液完全降解。其优越的可见光催化活性归因于表面的无定形TiO_(2)和较高的氧空位含量。
The dark brown titanium dioxide was prepared by one pot gel combustion method annealing.It was characterized by XRD,TEM,UV-vis,FTIR and XPS.The photocatalytic results showed that the photocatalytic activity of brown TiO_(2)prepared at 300℃was higher than that of white TiO_(2)prepared at 500℃and commercial P25.20 mg/L crystal violet solution was completely degraded in 20 min,and 40 mg/L crystal violet solution was completely degraded in 80 min.Its superior visible photocatalytic activity is attributed to the amorphous TiO_(2)on the surface and the high content of oxygen vacancy.
作者
谢浩
陈雨晴
戴玉娟
江开宏
乐垚
王超
XIE Hao;CHEN Yu-qing;DAI Yu-juan;JIANG Kai-hong;LE Yao;WANG Chao(School of Architecture and Materials Engineering,Hubei Second Normal University,Wuhan 430205,China;Hubei Engineering Technology Research Center of Environmental Purification Materials,Wuhan 430205,China;Hubei BIM Smart Construction International Science and Technology Cooperation Base,Wuhan 430205,China)
出处
《武汉理工大学学报》
CAS
北大核心
2020年第8期14-19,共6页
Journal of Wuhan University of Technology
基金
国家自然科学基金(51808201)
湖北省自然科学基金(2016CFB291)
关键词
褐色二氧化钛
光催化
结晶紫
氧空位
brown titanium dioxide
photocatalytic
crystal violet
oxygen vacancy
作者简介
谢浩(1985-),男,讲师.E-mail:xiehao@hue.edu.cn
