铁掺杂二氧化钛光催化剂的性能研究  

Study on Properties of Fe-TiO_2 Photocatalysts

作　　者：段萍[1] 罗玉萍[1] 肖斌[1] 朱忠其[1] 柳清菊[1] 

机构地区：[1]云南大学云南省高校纳米材料与技术重点实验室,昆明650091

出　　处：《材料导报》2013年第16期34-38,共5页Materials Reports

基　　金：国家自然科学基金(51062017;51262030)

摘　　要：采用溶胶-凝胶法制备了铁掺杂二氧化钛粉体(Fe-TiO2),采用XRD、UV-Vis、PL、纳米粒度分析仪等方法对其进行表征和分析。结果表明,Fe掺杂降低了TiO2的相转变温度,拓展了TiO2对可见光的吸收范围,有效地抑制了光生电子-空穴对的复合。光催化降解亚甲基蓝(MB)的实验表明,Fe-TiO2粉体在普通日光灯下对亚甲基蓝的降解率达90.36%,明显优于德国Degussa公司生产的P25纯TiO2光催化剂对亚甲基蓝的降解率43.58%。Fe-doped TiO2 powders were synthesized by sol-gel method. The obtained powders were characte- rized by XRD, UV-Vis, PL and nano-sizer analyzer, respectively. The results show that Fe-doping can decrease the phase transition temperature, broaden the absorption spectrum to the visible light region, and inhibit the recombina- tion of photoelectron-hole pairs. Under the fluorescent light irradiation, the degradation rate of the Fe-doped TiO2 sample to methyl blue reaches 90. 36%, which is obviously higher than 43.58% of P25 （TiO2 photocatalyst made by Degussa, German）.

关 键 词：纳米TIO2光催化剂 FE掺杂 光催化活性 

分 类 号：O643[理学—物理化学] O644[理学—化学]