| Co_3O_4/BiOI复合催化剂的制备及其光催化性能 |
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| 引用本文： | 牛磊,田丽红,叶立群,杨昌军,昝菱. Co_3O_4/BiOI复合催化剂的制备及其光催化性能[J]. 武汉大学学报(理学版), 2010, 56(1) |
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| 作者姓名： | 牛磊 田丽红 叶立群 杨昌军 昝菱 |
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| 作者单位： | 武汉大学化学与分子科学学院,湖北,武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目(20673078) |
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| 摘 要： | 考察了两种方法制备的BiOI光催化剂,结果显示溶剂热法制备的BiOI比液相沉淀法制备的BiOI具有更好的光催化活性.然后,以溶剂热法制备的BiOI采用浸渍法制备了CoOx/BiOI复合催化剂,用X射线衍射(XRD)、紫外-可见(UV-vis)漫反射光谱、透射电子显微镜(TEM)等手段对其进行了表征,探讨了煅烧温度,煅烧时间以及Co掺杂量对其光催化性能的影响.结果显示:在300℃煅烧2h,Co的掺杂量为2.0%(Co/BiOI)的条件下,CoOx/BiOI复合物紫外光催化活性最高.结构研究表明,Co是以Co3O4的形式呈针状分布在团聚后的BiOI的表面,这有效地促进了BiOI的光催化性能.
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| 关 键 词： | CoOx/BiOI复合物 光催化 溶剂热法 液相沉淀法 浸渍法 |
Synthesis and Photocatalytic Properties of Co_3O_4/BiOI Composite |
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| NIU Lei,TIAN Lihong,YE Liqun,YANG Changjun,ZAN Ling. Synthesis and Photocatalytic Properties of Co_3O_4/BiOI Composite[J]. JOurnal of Wuhan University:Natural Science Edition, 2010, 56(1) |
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| Authors: | NIU Lei TIAN Lihong YE Liqun YANG Changjun ZAN Ling |
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| Affiliation: | NIU Lei,TIAN Lihong,YE Liqun,YANG Changjun,ZAN Ling(College of Chemistry , Molecular Science,Wuhan University,Wuhan 430072,Hubei,China) |
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| Abstract: | BiOI was synthesized by solvothermal method and liquid-phase precipitation method,and their photocatalytic properties were compared by the degradation of methyl orange (MO) under UV or UV-vis light. CoOx/BiOI composite photocatalyst was synthesized by the impregnation method. The samples were characterized by X-ray diffraction (XRD),UV-vis diffuse reflectance spectroscopy,and transmission electron microscopy. The influence of calcination temperature,time and cobalt content was investigated. The optimum calc... |
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| Keywords: | CoOx/BiOI composite photocatalytic solvothermal method liquid-phase precipitation method impregnation method |
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