| V~(5+)/TiO_2-SiO_2-GF复合光催化剂制备及降解甲醛的研究 |
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| 引用本文： | 李娟,檀科明,陈勇志,洪均.V~(5+)/TiO_2-SiO_2-GF复合光催化剂制备及降解甲醛的研究[J].环境科学与技术,2012(12):82-86. |
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| 作者姓名： | 李娟 檀科明 陈勇志 洪均 |
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| 作者单位： | 重庆大学城市建设与环境工程学院 |
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| 摘 要： | 采用溶胶-凝胶法制备了纯TiO2、TiO2-SiO2、V5+/TiO2-SiO2光催化剂,并分别负载于玻璃纤维布上,利用X射线衍射(XRD)和比表面及孔隙度(BET)分析技术对样品进行了表征。以甲醛的降解率来评价复合光催化剂的光催化活性。结果表明:玻璃纤维布预处理方式、TiO2与SiO2的复合配比、V的掺杂量、煅烧温度对纳米TiO2的光催化活性有影响。V5+/TiO2-SiO2复合光催化剂比表面积为143.74 m2/g,晶粒粒径为16.9 nm。
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| 关 键 词： | 复合光催化剂 光催化活性 溶胶-凝胶法 甲醛 |
Preparation of V5+/TiO2-SiO2-GF Composite Photocatalyst and Degradation of Formaldehyde |
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| LI Juan,TAN Ke-ming,CHEN Yong-zhi,HONG Jun.Preparation of V5+/TiO2-SiO2-GF Composite Photocatalyst and Degradation of Formaldehyde[J].Environmental Science and Technology,2012(12):82-86. |
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| Authors: | LI Juan TAN Ke-ming CHEN Yong-zhi HONG Jun |
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| Institution: | (School of Urban Construction and Environmental Engineering,Chongqing University,Chongqing 400045,China) |
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| Abstract: | TiO2,TiO2-SiO2 and V5+/TiO2-SiO2 were prepared by sol-gel method,and then loaded on glass fibre.The samples were characterized by XRD and BET.Their photocatalytic properties were studied by photocatalytic degradation of formaldehyde.Results indicated that the photocatalytic activity of nano-TiO2 was mainly affected by factors such as pretreatment of glass fibre,composite ratio of TiO2 and SiO2,doping content of V5+,doping ratio and calcination temperature.Specific surface area of composite photocatalysts V5+/TiO2-SiO2 was 143.74 m2/g and grain particle size was 16.9 nm. |
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| Keywords: | composite photocatalyst photocatalytic activity sol-gel method formaldehyde |
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