合成氟锌共掺杂纳米TiO_2及其光催化活性  

Preparation and Photocatalytic Activity of Nano-TiO_2 Codoped with Fluorine and Zinc

作　　者：李发堂[1,2] 赵地顺[2,3] 李红霞[1] 郝勇静[1] 宋林珊[1] 

机构地区：[1]河北科技大学理学院,河北石家庄050018 [2]天津大学化工学院,天津300072 [3]河北科技大学化学与制药工程学院,河北石家庄050018

出　　处：《稀有金属材料与工程》2008年第A01期256-259,共4页Rare Metal Materials and Engineering

基　　金：河北省自然科学基金资助(203364)

摘　　要：以CF_3COOH和Zn(NO_3)_2为掺杂剂,采用溶胶凝胶法合成了纳米F^-/Zn^(2+)/TiO_2粉体,以次甲基蓝的光催化降解为探针反应,评价了其光催化活性,并利用XRD、FT-IR、EDS、BET、TEM等手段对样品进行测试和表征。测试表明F^-和Zn^(2+)已经掺杂在纳米TiO_2中,设计掺n(F)/n(Ti)-2%、n(Zn)/n(Ti)-3%的样品催化活性最高,可以将未掺杂TiO_2光催化次甲基蓝1 h的降解率由73.2%提高到86.2%。Nano-F/Zn^2＋/TiO2 particles were prepared by sol-gel method using CF3COOH and Zn（NO3）2 as dopants. The photocatalytic decomposition of methylene blue in aqueous solution was used as a probe to evaluate their photocatalytic activities. The powders were characterized by energy dispersion X-ray spectrum （EDS）, Fourier transform infrared spectroscopy （FT-IR）, X-ray diffraction （XRD） and BET. The results showed that F and Zn^2＋ were doped into TiO2. The appropriate codoping amount for F-Zn were n（F）/n（TiO2）=2%, n（Zn）/n（TiO2）-3% and the degradation rate of methylene blue at 1 h was improved from 73.2% to 86.2% when using F/Zn^2＋/TiO2 as photocatalyst.

关 键 词：共掺杂 纳米TIO2 光催化活性 

分 类 号：O614.411[理学—无机化学] O643.361[理学—化学]