[1]胡华国,王玉萍,顾凌燕,等.氮掺杂纳米TiO2的制备及其可见光催化活性的研究[J].南京师大学报(自然科学版),2009,32(03):76-83.
 Hu Huaguo,Wang Yuping,Gu Lingyan,et al.Preparation of Nitrogen-doped TiO2 and Photocatalytic Activity Under Visible Light[J].Journal of Nanjing Normal University(Natural Science Edition),2009,32(03):76-83.
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氮掺杂纳米TiO2的制备及其可见光催化活性的研究()
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《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

卷:
第32卷
期数:
2009年03期
页码:
76-83
栏目:
化学
出版日期:
2009-09-30

文章信息/Info

Title:
Preparation of Nitrogen-doped TiO2 and Photocatalytic Activity Under Visible Light
作者:
胡华国;王玉萍;顾凌燕;彭盘英;
南京师范大学化学与环境科学学院, 江苏南京210097
Author(s):
Hu HuaguoWang YupingGu LingyanPeng Panying
School of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097,China
关键词:
氮掺杂 光催化 T iO2 亚甲基蓝
Keywords:
N- doped pho tocata lysis T iO2 m ethy lene blue
分类号:
TB383.1;O643.36
摘要:
以钛酸四丁酯为原料,尿素为氮源,采用溶胶-凝胶法制备了N掺杂T iO2光催化剂.研究了溶胶液的pH,溶胶液的温度,N掺杂量以及焙烧温度对T iO2光催化剂催化活性的影响,并用XRD、UV-Vis、XPS等手段对催化剂性能进行了表征,考察了催化剂在可见光和紫外光下的催化活性.结果表明最佳的制备条件为:饱和尿素溶液的加入量为4mL、溶胶液的pH为2.5、溶胶液的反应温度为40℃、焙烧温度为500℃.制得的N/TiO2催化剂为锐钛矿相、平均粒径为18.5nm.该催化剂在钨灯可见光照射5h后对亚甲基蓝溶液的去除率为41.8%, 比同样条件下用纯T iO2高11. 9倍.
Abstract:
N - doped TiO2 pho tocata lysts w ere fabricated bym ix ing tetrabuty l titanate w ith urea in ethano l and w ate r by so-l ge lm ethod. The effect of var ious exper imenta l param eters on the pho tocata ly tic activ ity of N- doped T iO2 pho tocatalysts was investig ated, w hich invo lved so l pH va lue, sol temperature, urea con tent and ca lc inated tem pera ture. TheN / T iO2 pho tocata lystw as characte rized by XRD, XPS, UV- V is and the pho to ca talytic ac tiv ityw as evalua ted by pho todegradation of m ethylene b lue unde r v isib le light and ultrav io let irrad ia tion. The results showed that the optim a l condition inc luding dopants be ing 4mL sa turation urea so lution, so l reaction temperature 40℃ , so l pH va lue 2. 5, and calc ined tem pe ra ture 500℃respective ly. The average pa rtic le diam eter of resultant N /T iO2 w as about 13.8 nm and its crystal form was anatase. The photocata ly tic degradation effic iency of them ethy lence b lue o f 25m g? L- 1 w ith N /T iO2 can reach 41.8% under v is ible- ligh t illum inated 5 h and w as 11. 9 tim es o f pure T iO2 in sam e cond ition

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备注/Memo

备注/Memo:
基金项目: 江苏省教育厅自然科学研究指导性计划( 01KJD610011)资助项目.
通讯联系人: 王玉萍, 副教授, 研究方向: 环境监测及工业" 三废"处理及资源化实用技术. E-m ail:w angyuping@ n jnu. edu. cn
更新日期/Last Update: 2013-04-23