| 坡缕石/磁性铁氧化物/TiO2复合光催化剂性能实验研究 |
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| 引用本文： | 高 薇,陈天虎,庆承松,彭书传,谢晶晶.坡缕石/磁性铁氧化物/TiO2复合光催化剂性能实验研究[J].岩石矿物学杂志,2009,28(2):185-190. |
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| 作者姓名： | 高 薇 陈天虎 庆承松 彭书传 谢晶晶 |
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| 作者单位： | 合肥工业大学,资源与环境工程学院,安徽,合肥,230009 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金 |
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| 摘 要： | 用醇盐水解法、硫酸亚铁-硝酸钾氧化法制备TiO2光催化剂、坡缕石/TiO2复合光催化剂和坡缕石/磁性铁氧化物/TiO2复合光催化剂.通过XRD、TEM、UV-Vis和MS分析光催化剂的物相组成、形貌特征、对紫外可见光的漫反射以及磁化率,并以甲基橙为处理对象,对比研究了TiO2光催化剂、坡缕石/TiO2复合光催化剂和坡缕石/磁性铁氧化物/TiO2复合光催化剂的光催化效果.结果表明:坡缕石/磁性铁氧化物的复合能降低复合光催化剂中锐钛矿的平均粒径,提高锐钛矿的分散性.铁的复合是否提高光催化剂的光催化效率与催化剂的煅烧温度有关.坡缕石的复合对光催化剂的最佳煅烧温度有影响.
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| 关 键 词： | 坡缕石 磁性铁氧化物 光催化剂 光催化效果 |
A study of the photocatalytic properties of palygorskite/ magnetic iron oxide/ TiO2 composite photocatalyst |
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| GAO Wei,CHEN Tian-hu,QING Cheng-song,PENG Shu-chuan and XIE Jing-jing.A study of the photocatalytic properties of palygorskite/ magnetic iron oxide/ TiO2 composite photocatalyst[J].Acta Petrologica Et Mineralogica,2009,28(2):185-190. |
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| Authors: | GAO Wei CHEN Tian-hu QING Cheng-song PENG Shu-chuan and XIE Jing-jing |
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| Institution: | School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | TiO2 photocatalyst, palygorskite/ TiO2 composite photocatalyst and palygorskite/ magnetic iron oxide/ TiO2 composite photocatalyst were prepared by hydrolyte tetrabutyl titanate and loaded Fe3O4 in the system of ferrous sulfate and potassium nitrate. The composite photocatalyst was studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis diffuse reflectance and magnetic susceptibility (MS). The effects of doped Fe3O4 and doped palygorskite on photocatalysis and a comparative study of the photocatalytic decolorization rate between TiO2 in composite photocatalyst and TiO2 on the market were evaluated by the decolorization of methyl orange. The results indicate that doped Fe3O4 and palygorskite can decrease the average size of anatase in composite photocatalyst and improve the dispersion of anatase. Whether the doped Fe3O4 can improve photocatalytic activity or not is related to calcination temperature of the photocatalyst. Doped palygorskite can affect the best calcination temperature of photocatalyst. |
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| Keywords: | TiO2 |
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