[1]李杰,王玉萍,彭盘英,等.溶胶凝胶法制备硫掺杂TiO2及其可见光催化性能的研究[J].南京师大学报(自然科学版),2007,30(04):56-60.
　Li Jie,Wang Yuping,Peng Panying.Synthesis of S-doped TiO2 by Sol-Gel Method and Its Visible Photocatalytic Activities[J].Journal of Nanjing Normal University(Natural Science Edition),2007,30(04):56-60.
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溶胶凝胶法制备硫掺杂TiO2及其可见光催化性能的研究()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第30卷
期数:
2007年04期
页码:
56-60
栏目:
化学
出版日期:
2007-12-30

文章信息/Info

Title:
Synthesis of S-doped TiO2 by Sol-Gel Method and Its Visible Photocatalytic Activities
作者:
李杰;王玉萍;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):
Li Jie; Wang Yuping; Peng Panying
School of Chemistry and Environmental Science,Nanjing Normal University,Nanjing 210097,China
关键词:
溶胶-凝胶法;  硫掺杂;  掺杂量;  可见光;  光催化降解
Keywords:
sol-gelmethod;  S-dop ing;  dop ing amount;  visible-light;  photodegradation
分类号:
O643.32
摘要:
以钛酸丁酯和硫脲为原料,用溶胶凝胶法制备掺杂硫的TiO2光催化剂,并用XRD、XPS、及UV-Vis吸收光谱对粉体进行了表征.以其对亚甲蓝和1-萘酚-8-磺酸的去除率来考察催化剂的可见光活性.结果表明:硫的掺杂减小了TiO2的禁带能隙,使其在可见光区具有光催化活性.硫的掺杂量对TiO2光催化剂的可见光吸收范围及可见光活性有明显的影响.当S掺杂量在1.2%时,样品的吸收带边可达450nm,对亚甲蓝的光降解率最高.10mg.L-1的1-萘酚-8-磺酸使用1.2%S-TiO2催化剂在可见光下反应7h,去除率达72.4%.该催化剂为锐钛矿型,平均粒径约为7.4nm.XPS分析结果表明,S原子在催化剂中主要以S 6+和S 4+价态存在.
Abstract:
S-doped TiO2 nanoparticleswere synthesized by sol-gelmethod with tetrabutyl titanate and thio- urea as p recursor. The S-TiO2 photocatalyst characterized by XRD, XPS, UV-Vis and the photocatalytic activity was evaluated by photo degradation of methylene blue and 1-naphthol-8-sulfonic acid under visible-light radiation. The results showed that doped S reduced energy band gap of TiO2 , thereby increasing the photocatalytivity in the visible-light region. The visible2light responding bound and photocatalytic activity of catalystwere affected by the dop ing amount. The 1.21% S doped TiO2 UV2Visible absorp tion band was about 450 nm, and the removal efficiency ofmethylene blue was the biggest. The concentration of the 1- naphthol-8-sulfonic acid was 10mg·L - 1 , and the photocatalytic degradation rate can reach 72.4% un- der visible-light illuminated 7 h with 1.2% S-TiO2. The average particle diameter of resultant S-TiO2 was about 7.4 nm and its crystal form was anatase. The formation of S atoms in S-TiO2 particles was determined to be mainly S 6 + and S 4 + from X-ray photoelectron spectra (XPS).

参考文献/References:

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备注/Memo

备注/Memo:
基金项目:江苏省教育厅自然科学基金(05KJD6010110)资助项目.
作者简介:李　杰(1981—) ,女,硕士,主要从事光催化氧化技术的学习与研究. E-mail: lijie - p rivate@sina. com
通讯联系人:王玉萍(1963—) ,女,副教授,主要从事光催化氧化技术的教学与研究. E-mail: wangyup ing@njnu. edu. cn
更新日期/Last Update: 2013-05-05