| 载银TiO2薄膜制备及其光催化灭菌性能 |
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| 引用本文： | 吴东海,尤宏,刘巍巍,杜佳暄,金大瑞.载银TiO2薄膜制备及其光催化灭菌性能[J].化工学报,2009,60(7). |
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| 作者姓名： | 吴东海 尤宏 刘巍巍 杜佳暄 金大瑞 |
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| 作者单位： | 哈尔滨工业大学城市水资源与环境国家重点实验室,黑龙江,哈尔滨,150090 |
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| 基金项目： | 黑龙江省科技攻关项目(GC06C20503)~~ |
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| 摘 要： | 在硫酸电解液中,用阳极氧化法在纯钛表面制备了纳米多孔TiO2薄膜,并通过光沉积法进行了载银修饰。采用XRD、SEM对薄膜的形貌与相结构进行了表征,并考察了电流密度、电压和电解液浓度等对生成的TiO2薄膜光催化灭菌性能的影响。结果表明:TiO2薄膜由锐钛矿型和金红石型组成。随电压升高,金红石型的含量逐渐增多,微孔孔径增大,在电流密度为150 mA.cm-2时,分别由120 V时的19%和93 nm增加到180 V时的96%和283 nm。电流密度的适当增大和适量的载银修饰有助于提高TiO2薄膜光催化灭菌性能。在1 mol.L-1硫酸溶液中,140 V/150 mA.cm-2条件下制备的TiO2薄膜,经3 g.L-1硝酸银溶液中载银修饰后灭菌效果最佳。
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| 关 键 词： | 阳极氧化 TiO2薄膜 光催化灭菌 载银 |
Preparation and photocatalytic bactericidal activity of silver loaded TiO2 thin films |
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| WU Donghai,YOU Hong,LIU Weiwei,DU Jiaxuan,JIN Darui.Preparation and photocatalytic bactericidal activity of silver loaded TiO2 thin films[J].Journal of Chemical Industry and Engineering(China),2009,60(7). |
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| Authors: | WU Donghai YOU Hong LIU Weiwei DU Jiaxuan JIN Darui |
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| Affiliation: | State Key Laboratory of Urban Water Resource and Environment;Harbin Institute of Technology;Harbin 150090;Heilongjiang;China |
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| Abstract: | Photocatalytic nano-porous titanium dioxide films were prepared by the anodic oxidation method in sulfuric acid solution,and were loaded with silver by the photodeposition method.The microstructure and grain morphology in the films were characterized by SEM and XRD.The effect of anodizing parameters(anodizing voltage,current density and electrolyte concentration)on the photocatalytic bactericidal activity of TiO2 films was investigated.It showed that the titanium oxide film was mainly composed of anatase an... |
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| Keywords: | anodic oxidation TiO2 thin film photocatalytic bactericidal silver loaded |
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