| 玻璃微珠/Ag/TiO2可见光催化剂的制备与表征 |
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| 引用本文： | 郑昭科,黄柏标,秦晓燕,张晓阳.玻璃微珠/Ag/TiO2可见光催化剂的制备与表征[J].无机化学学报,2009,25(11):1898-1902. |
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| 作者姓名： | 郑昭科 黄柏标 秦晓燕 张晓阳 |
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| 作者单位： | 晶体材料国家重点实验室,山东大学,济南,250100 |
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| 基金项目： | 973国家重点基础研究项目，国家自然科学基金 |
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| 摘 要： | 通过离子交换法将Ag纳米颗粒负载于玻璃微珠的表面及浅表层，并以钛酸四丁酯的乙醇溶液为前驱体，将TiO2负载于包含银的玻璃微珠表面，制得一种玻璃微珠/Ag/TiO2复合光催化剂。由于纳米银的表面等离子体吸收效应，该复合光催化剂具有一定的可见光响应特性。利用XRD、SEM对样品进行表征，可发现玻璃微珠表面形成一层均匀多孔的锐钛矿TiO2，其粒径均在50 nm左右。由漫反射光谱可得出该催化剂具有较强的可见光吸收，并在降解甲基橙溶液的试验中表现出较好的可见光催化活性。
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| 关 键 词： | 光催化 纳米银 表面等离子体 二氧化钛 |
Visible-Light Photocatalyst of Glass-Microspheres/Ag/TiO2: Synthesis and Characterization |
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| ZHENG Zhao-Ke,HUANG Bai-Biao,QIN Xiao-Yan and ZHANG Xiao-Yang.Visible-Light Photocatalyst of Glass-Microspheres/Ag/TiO2: Synthesis and Characterization[J].Chinese Journal of Inorganic Chemistry,2009,25(11):1898-1902. |
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| Authors: | ZHENG Zhao-Ke HUANG Bai-Biao QIN Xiao-Yan and ZHANG Xiao-Yang |
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| Institution: | State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100,State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100,State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 |
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| Abstract: | The sliver nanoparticles were loaded on the surface of glass-microspheres (GMS) by ion-exchange method, and TiO2 was loaded on the GMS with the solution of Ti(OBu)4 and ethanol as precursor, then the GMS/Ag/TiO2 composite photocatalyst was obtained. The as-prepared composite photocatalyst exhibits somewhat visible-response properties, owing to the plasmon resonance of Ag nanoparticles. The samples were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV/Vis diffuse-reflectance spectra. It was present that a uniform and porous film of anatase TiO2 was formed on the surface of GMS and the diameter of TiO2 particles was about 50 nm. In addition, the composite photocatalyst has efficient visible-light absorbance, and it shows efficient visible-light photocatalytic activity for the degradation of methyl orange (MO). |
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| Keywords: | photocatalyst Ag nanoparticles plasmon TiO2 |
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