氮等离子体改性二氧化钛的研究  

Preparation and characterization of TiO_2 N-doped by nitrogen plasma treatment

作　　者：李朝玉[1] 李俊[1] 

机构地区：[1]武汉工程大学化工与制药工程学院,湖北武汉430074

出　　处：《武汉工程大学学报》2010年第12期32-34,87,共4页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金资助(50773059)

摘　　要：利用氮等离子体处理自制纳米锐钛型二氧化钛,通过XRD、XPS、UV-vis、IR以及Cr2O72-的光降解率对氮等离子处理前后的自制二氧化钛粉末进行表征.结果表明:经过氮等离子体处理过的二氧化钛的光催化性能明显优于未处理的二氧化钛.The self-made nanosized anatase TiO2 powder was synthesized by hydrolysis of titanium ester（Ti（OC4H9）4） in basic media and then treated by N2 plasma.The effect of plasma treatment conditions on the activity of photo-catalytic degradation of the Cr2O2-7 was investigated.The samples were characterized by X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS）,and Ultraviolet spectra（UV）,Infrared spectra（IR）.The 399.6 eV peak on the spectra of XPS showed that there was a certain of N1s after plasma treatment,indicated that nitrogen on the TiO2 surface can be formed through N—O replacement during N2 plasma,the spectra of UV showed that the light absorption move to the visible region after plasma treatment.The spectra of XRD indicated the crystallographic forms and particles dimension were no apparently change before and after the plasma treatment.The photo-catalytic activity of plasma treatment TiO2 was better than the un-treatment.

关 键 词：二氧化钛 光催化 氮等离子体 

分 类 号：O539[理学—等离子体物理]