| 掺银纳米Ti02的制备及其光催化性能研究 |
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| 引用本文： | 丁志杰,郭雨,郭腾,陈君华.掺银纳米Ti02的制备及其光催化性能研究[J].安徽科技学院学报,2012,26(2):56-60. |
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| 作者姓名： | 丁志杰 郭雨 郭腾 陈君华 |
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| 作者单位： | 安徽科技学院理学院,安徽凤阳,233100;安徽科技学院理学院,安徽凤阳,233100;安徽科技学院理学院,安徽凤阳,233100;安徽科技学院理学院,安徽凤阳,233100 |
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| 基金项目： | 安徽省教育厅自然科学基金项目，安徽科技学院重点建设学科项目 |
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| 摘 要： | 以钛酸四丁酯为钛源，硝酸银为银源，采用溶胶-凝胶法制备了掺银的纳米Ti02。用X射线衍射和透射电子显微镜对材料进行了表征，以掺银TiO2为催化剂对甲基橙进行了光催化降解实验。考查了催化剂掺银量、催化剂总用量、甲基橙溶液浓度及降解时间对甲基橙降解率的影响。结果表明，制得的样品颗粒细小均匀，3％掺银Ti02样品比表面积高达132．2m^2／g。掺银Ti02中的银钛原子摩尔比以及催化剂用量均影响光催化活性，银的掺杂量为3％时，纳米TiO2光催化活性最高，3％掺银TiO2催化剂最佳用量为0．3g/L。降解率随甲基橙初始浓度的增加而降低，随光照降解时间的增加而提高，光照20-30min之间．降解速度最快。
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| 关 键 词： | 掺银量 光催化剂 溶胶-凝胶法 降解率 |
Synthesis and Photocatalytic Performance of Titanium Oxide Doped with Silver |
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| DING Zhi-jie,GUO Yu,GUO Teng,CHEN Jun-hua.Synthesis and Photocatalytic Performance of Titanium Oxide Doped with Silver[J].Journal of Anhui Science and Technology University,2012,26(2):56-60. |
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| Authors: | DING Zhi-jie GUO Yu GUO Teng CHEN Jun-hua |
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| Institution: | (College of Science,Anhui Science and Technology University,Fengyang 233100,China) |
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| Abstract: | Using titanium butyl titanate as inorganic source and silver nitrate as doped material,silver-doped TiO2 nano-composite materials were prepared by sol-gel method.Chemical composition and structure of the materials were characterized by transmission electron microscopy and X-ray diffraction,and its photo-catalytic properties were evaluated with methyl orange as the model compound.The effects of the content of silver,the dosage of catalyst,the concentration of methyl orange and the photo-catalytic degradable time on the degradation efficiency were investigated.The results showed that the sample particles is fine,the specific surface area of TiO2 which contains 3% silver mole fraction is 132.2 m2/g.Both the silver content and the catalyst dosage had effect on the degradation efficiency.The optimum silver mole fraction in the composite is 3% and the optimum catalyst dosage is 0.3 g/L.Increasing the initial concentration of methyl orange will decelerate solution’s degradation.The increasing of illumination time is favorable for methyl orange degradation.When the time is in 20 minutes to 30 minutes,the degradation rate increased significantly. |
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| Keywords: | Content of silver Photo - catalyst Sol - gel method Degradation efficiency |
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