| 自发氧化还原法制备Co3O4/CeO2纳米复合材料及其CO催化氧化反应结构优化 |
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| 引用本文： | 金欣,冯锡岚,刘大鹏,苏雨童,张政,张瑜. 自发氧化还原法制备Co3O4/CeO2纳米复合材料及其CO催化氧化反应结构优化[J]. 高等学校化学学报, 2020, 41(4): 652-660. DOI: 10.7503/cjcu20190649 |
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| 作者姓名： | 金欣 冯锡岚 刘大鹏 苏雨童 张政 张瑜 |
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| 作者单位： | 1. 北京航空航天大学化学学院, 仿生智能界面科学与技术教育部重点实验室;2. 国际交叉科学研究院;3. 生物医学工程高级创新中心, 北京100191 |
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| 基金项目： | 国家自然科学基金(批准号:51972008,51925202)资助. |
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| 摘 要： | 采用简单的自发氧化还原法合成了Co3O4/CeO2纳米复合材料,采用透射电子显微镜(TEM),X射线衍射(XRD)及X射线光电子能谱(XPS)等分析手段对样品进行了表征,并探究了反应参数对其催化CO氧化反应活性的影响.结果表明,Co/Ce摩尔比、pH值、反应温度和煅烧温度均显著影响Co3O4/CeO2纳米复合材料的催化性能;性能最优的样品用于催化CO氧化反应在140℃时即可实现100%的转化率,并且在循环测试中其催化活性保持不变,显示出良好的稳定性.
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| 关 键 词： | 四氧化三钴 二氧化铈 自发氧化还原法 一氧化碳氧化 |
| 收稿时间： | 2019-12-11 |
Auto-redox Strategy for the Synthesis of Co3O4/CeO2 Nanocomposites and Their Structural Optimization Towards Catalytic CO Oxidation |
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| JIN Xin,FENG Xilan,LIU Dapeng,SU Yutong,ZHANG Zheng,ZHANG Yu. Auto-redox Strategy for the Synthesis of Co3O4/CeO2 Nanocomposites and Their Structural Optimization Towards Catalytic CO Oxidation[J]. Chemical Research In Chinese Universities, 2020, 41(4): 652-660. DOI: 10.7503/cjcu20190649 |
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| Authors: | JIN Xin FENG Xilan LIU Dapeng SU Yutong ZHANG Zheng ZHANG Yu |
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| Affiliation: | 1. Key Laboratory of Bio?inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry;2. International Research Institute for Multidisciplinary Science;3. Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China |
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| Abstract: | A simple auto-redox strategy was successfully used to synthesize Co3O4/CeO2 nanocomposites.These samples were then characterized by means of TEM,XRD,XPS,and so on,to study the influence of reaction parameters on their catalyst activity.The results indicate that the catalytic performance of Co3O4/CeO2 nanocomposites could be optimized by changing the molar ratio of Co/Ce,pH values,reaction and calcination temperatures.The optimal Co3O4/CeO2 nanocomposite could reach a 100%CO conversion at 140℃compared to the others.Moreover its catalytic activity kept stable after cycling,indicating its good stability. |
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| Keywords: | Co3O4 CeO2 Auto-redox CO oxidation |
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