S—N共掺杂纳米TiO2可见光光催化剂的制备及其性能研究  

Preparation of S-N Co-doped TiO2 Visible Light Photocatalysts by Mechanochemical Method and Its Photocatalytic Activity

作　　者：邢朋飞[1] 王金淑[2] 金建新[1] 张智强[1] 王政红[1] 

机构地区：[1]洛阳船舶材料研究所,河南洛阳471039 [2]北京工业大学材料学院,北京100022

出　　处：《纳米科技》2007年第2期29-33,共5页

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，硫脲为掺杂源，采用机械化学法经过600rpm×2h高能球磨后，以焙烧处理，合成了S—N共掺杂纳米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400nm的可见光具有良好的吸收性能，其吸收边红移至570nm；在λ〉400nm的可见光照射下，硫脲加入量为10％的样品对甲基蓝的降解率比原料粉末提高了6．11倍。Sulfur-Nitrogen co-doped TiO2 nano-sized powders were prepared by the mechanochemical reaction method on 600rpm milled 2 hours and calcined using anatase TiO2 as raw material and thiourea as S-N source. The crystals phase of prepared powders consists of anatase, rutile and brookite. The S-N co-doped powder shows excellent absorption for visible light λ〉400nm, the absorbed band red-shift to about 570nm. The methyl blue degradation rate of sample prepared with 10% thiourea doping source is about 6.11 times higher than that of raw TiO2.

关 键 词：光催化 机械化学法 S—N共掺杂 TIO2 甲基蓝降解 

分 类 号：O643[理学—物理化学]