高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (4): 652-660.doi: 10.7503/cjcu20190649

• 庆祝《高等学校化学学报》复刊40周年专栏 • 上一篇    下一篇

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

金欣1,冯锡岚1,刘大鹏1,*(),苏雨童1,张政1,张瑜1,2,3,*()   

  1. 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
  • 收稿日期:2019-12-11 出版日期:2020-04-10 发布日期:2020-02-17
  • 通讯作者: 刘大鹏,张瑜 E-mail:liudp@buaa.edu.cn;jade@buaa.edu.cn
  • 基金资助:
    国家自然科学基金(51972008, 51925202)

Auto-redox Strategy for the Synthesis of Co3O4/CeO2 Nanocomposites and Their Structural Optimization Towards Catalytic CO Oxidation

JIN Xin1,FENG Xilan1,LIU Dapeng1,*(),SU Yutong1,ZHANG Zheng1,ZHANG Yu1,2,3,*()   

  1. 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
  • Received:2019-12-11 Online:2020-04-10 Published:2020-02-17
  • Contact: Dapeng LIU,Yu ZHANG E-mail:liudp@buaa.edu.cn;jade@buaa.edu.cn
  • Supported by:
    This paper is supported by the National Natural Science Foundation of China(51972008, 51925202)

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

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.

Key words: Co3O4, CeO2, Auto-redox, CO oxidation

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