| 超临界干燥法制备的锐钛矿TiO_2纳米晶光催化降解亚甲基蓝的研究 |
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| 引用本文： | 李振华,何代平,蔡铎昌,江平.超临界干燥法制备的锐钛矿TiO_2纳米晶光催化降解亚甲基蓝的研究[J].西华师范大学学报(哲学社会科学版),2008,29(1):20-23. |
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| 作者姓名： | 李振华 何代平 蔡铎昌 江平 |
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| 作者单位： | 西华师范大学化学化工学院,四川南充637002 |
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| 基金项目： | 四川省教育厅重点项目(2005A104) |
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| 摘 要： | 以自制的锐钛矿TiO2纳米晶为光催化剂，高压汞灯为光源，考察了亚甲基蓝溶液初始浓度、催化剂用量、pH值、O2和Fe^3＋等因素对其光催化降解的影响．结果表明，适宜的pH值为5．6，最佳的催化剂用量为1．5g／L，通入一定量氧或加入少量的Fe^3＋离子能有效的促进TiO2光催化亚甲基蓝降解．
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| 关 键 词： | 锐钛矿TiO2纳米晶 光催化 亚甲基蓝 降解 |
| 文章编号： | 1673-5072(2008)01-0020-04 |
| 修稿时间： | 2007年6月30日 |
Study on Photocatalytic Degradation of Methylene Blue by Anatase TiO_2 Nanocrystallites Prepared by Supercritical Drying |
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| LI Zhen-hua,HE Dai-ping,CAI Duo-chang,JIANG Ping.Study on Photocatalytic Degradation of Methylene Blue by Anatase TiO_2 Nanocrystallites Prepared by Supercritical Drying[J].Journal of China West Normal University:Natural Science Edition,2008,29(1):20-23. |
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| Authors: | LI Zhen-hua HE Dai-ping CAI Duo-chang JIANG Ping |
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| Institution: | LI Zhen-hua,HE Dai-ping,CAI Duo-chang,JIANG Ping(School of Chemistry , Chemical Engineering,China West Normal University,Nanchong 637002,China) |
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| Abstract: | Using self-made anatase TiO2 nanocrystallites as catalyst,the effects of initial concentration of methylene blue,TiO2 amount,initial pH of methylene blue solution,O2 and Fe3+ on photocatalytic degradation of methylene blue under UV light irradiation(mercury lamp,150 W)were investigated.The optimal conditions for methylene blue degradation are pH of 5.6 and catalyst amount of 1.5 g/L,O2 and addition of a little Fe3+significantly accelerated the photocatalytic degradation of methylene blue. |
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| Keywords: | Anatase TiO_2 nanocrystallites photocatalysis methylene blue degradation |
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