机械化学法制备N掺杂纳米TiO_2可见光光催化剂及其性能研究  

Preparation of Nano-Sized Nitrogen-Doped TiO_2 by Mechanochemical Method and Its Photocatalytic Activity

作　　者：邢朋飞[1] 王金淑[1] 李辉[1] 李莉莉[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100022

出　　处：《稀有金属》2006年第5期649-652,共4页Chinese Journal of Rare Metals

基　　金：教育部新世纪优秀人才支持计划;北京市教育委员会科技发展计划资助项目(KM200610005010)

摘　　要：以锐钛矿型TiO2为原料,HMT(六亚甲基四胺)为掺杂N源,采用机械化学法经过600 r.min-1×2 h高能球磨,后续以焙烧处理,合成了N掺杂纳米TiO2粉末。所制备的粉末为锐钛矿、金红石和板钛矿的混合相,对波长大于400 nm的可见光具有良好的吸收性能,其吸收边红移至530 nm;在λ>400 nm的可见光照射下,HMT加入量为10%的样品对甲基蓝的降解率比原料粉末提高了2.7倍。Nitrogen-doped Ti02 nano-sized powders were prepared by the mechanochemical reaction method on 600 r. min^-1 milled 2 hours and calcined using anatase TiO2 as raw material netetramine （HMT） of prepared powders as N source. consists of and hexamethyle The crystals phase anatase, rutile and brookite. The N-doped powders show excellent absorption for visible lightλ〉 400 nm, the absorbed band red-shift to about 530 nm. The photocatalysis efficiency of sample prepared with 10% HMT is about 2.7 times higher than that of raw TiO2.

关 键 词：机械化学法 N掺杂 TIO2 甲基蓝降解 

分 类 号：O643[理学—物理化学]