| 溶胶-凝胶法制备TiO_2-Al_2O_3复合光催化剂及其表征 |
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| 引用本文： | 张文杰,李汝愿,杨波.溶胶-凝胶法制备TiO_2-Al_2O_3复合光催化剂及其表征[J].功能材料,2011(S5). |
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| 作者姓名： | 张文杰 李汝愿 杨波 |
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| 作者单位： | 沈阳理工大学环境与化学工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50774074); 辽宁省科学技术计划资助项目(2010229002) |
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| 摘 要： | 以钛酸四正丁酯为钛源,异丙醇铝为铝源,采用溶胶-凝胶法制备了TiO2-Al2O3复合光催化剂,考察其对甲基橙的吸附性能和在紫外光照射下的光催化活性。采用X射线衍射(XRD)、X射线光电子能谱(XPS)、傅里叶变换红外光谱(FT-IR)、N2吸附-脱附等对催化剂的晶相结构、化学组成及BET比表面积和孔径分布等进行了表征。结果表明TiO2-Al2O3复合光催化剂由TiO2和Al2O3组成,其中TiO2为单一的锐钛矿晶相,Al2O3为非晶态,Al2O3的存在可抑制TiO2晶粒的生长。在n(Ti)/n(Al)=12,500℃煅烧3h制得的TiO2-Al2O3复合光催化剂比表面积达99.21m2/g,平均孔径为22.39nm,累计孔容积为0.4493cm3/g。在500℃煅烧制得的复合光催化剂具有最佳的光催化活性和吸附性能。与纯TiO2相比,相同条件下TiO2-Al2O3复合光催化剂的光催化活性和吸附性能都有较大提高。
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| 关 键 词： | 溶胶-凝胶 TiO2 Al2O3 光催化 |
Preparation and characterization of TiO_2-Al_2O_3 composite photocatalyst using sol-gel method |
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| ZHANG Wen-jie,LI Ru-yuan,YANG Bo.Preparation and characterization of TiO_2-Al_2O_3 composite photocatalyst using sol-gel method[J].Journal of Functional Materials,2011(S5). |
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| Authors: | ZHANG Wen-jie LI Ru-yuan YANG Bo |
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| Affiliation: | ZHANG Wen-jie,LI Ru-yuan,YANG Bo(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159,China) |
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| Abstract: | The TiO2-Al2O3 composite photocatalyst was prepared by a sol-gel method from a sol mixture derived from tetrabutyl titanate and aluminium isopropoxide.Methyl orange adsorption ability as well as photocatalytic oxidation of methyl orange on the composite photocatalyst under UV-light irradiation was investigated.The crystalline structure,surface morphology,composition,BET surface area and pore size distribution of the samples were characterized by X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),F... |
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| Keywords: | sol-gel TiO2 Al2O3 photocatalysis |
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