| 硅钨酸敏化TiO_2的制备及光催化性能研究 |
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| 引用本文： | 王丹军,郭莉,李东升,张理平,高利峰,强小丹.硅钨酸敏化TiO_2的制备及光催化性能研究[J].环境科学与技术,2010,33(3). |
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| 作者姓名： | 王丹军 郭莉 李东升 张理平 高利峰 强小丹 |
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| 作者单位： | 1. 延安大学化学与化工学院,西安,延安,716000
2. 延安大学化学与化工学院,西安,延安,716000;三峡大学机械与材料学院,湖北,宜昌,443002 |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划，教育部重点科研基金，陕西省教育厅专项科研基金，陕西省重点实验室重点科研基金，延安大学科研基金项目 |
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| 摘 要： | 以硅钨酸为敏化剂,采用水热法合成了杂多酸敏化光催化剂TiO2-SiW。利用X-射线衍射(XRD)、紫外-可见吸收光谱(UV-vis)等测试手段对样品进行表征,以罗丹明B为模拟污染物评价其光催化活性。XRD结果表明,所得TiO2催化剂为锐钛矿型;UV-vis吸收光谱分析表明,杂多酸敏化使TiO2在可见光区的吸收增强,吸收边红移;光催化实验结果表明,所得TiO2-SiW催化剂光催化活性较好,将催化剂对模拟污染物的处理取得了较好的成果。
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| 关 键 词： | 纳米二氧化钛 杂多酸敏化 水热法 光催化 |
Synthesis and Photocatalytic Activity of Silicotungstic Acid Sensitized Titanium Dioxide |
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| WANG Dan-jun,GUO Li,LI Dong-sheng,ZHANG Li-ping,GAO Li-feng,QIANG Xiao-dan.Synthesis and Photocatalytic Activity of Silicotungstic Acid Sensitized Titanium Dioxide[J].Environmental Science and Technology,2010,33(3). |
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| Authors: | WANG Dan-jun GUO Li LI Dong-sheng ZHANG Li-ping GAO Li-feng QIANG Xiao-dan |
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| Institution: | WANG Dan-jun1,GUO Li1,LI Dong-sheng1,2 ZHANG Li-ping1,GAO Li-feng1,QIANG Xiao-dan1 (1.School of Chemistry and Chemical Engineering,Yan'an University,Yan'an 716000,China,2.School of Mechanical and Material Engineering,Three Gorges University,Yichang 443002,China) |
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| Abstract: | The silicotungstic acid sensitized nano-TiO2(TiO2-SiW)photocatalysts were synthesized using silicotungstic acid as sensitizer via a hydrothermal method. As-synthesized samples were characterized by XRD and UV-vis techniques and Rhodamine B was chosen as the model pollutant to evaluate photocatalytic activity of Assynthesized samples. UV-Vis absorption spectrum indicated that TiO2-SiW photocatalysts were extended significantly into visible region comparing to pure TiO2. Photocatalytic experiment results indi... |
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| Keywords: | nano-TiO_2 silicotungstic acid sensitization hydrothermal method photocatalysis |
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