催化学报 ›› 2012, Vol. 33 ›› Issue (8): 1334-1339.DOI: 10.1016/S1872-2067(11)60408-7

• 研究论文 • 上一篇    下一篇

三维花状 Co3O4 的低成本制备及其在催化 CO 氧化中的应用

曹昌燕, 窦智峰, 刘华, 宋卫国*   

  1. 中国科学院化学研究所, 北京分子科学国家实验室, 分子纳米结构与纳米技术实验室, 北京 100190
  • 收稿日期:2012-03-24 修回日期:2012-05-07 出版日期:2012-08-01 发布日期:2012-08-01

Low Cost Synthesis of 3D Flowerlike Co3O4 Nanostructures as Active Catalyst for CO Oxidation

CAO Changyan, DOU Zhifeng, LIU Hua, SONG Weiguo*   

  1. Beijing National Laboratory for Molecular Science (BNLMS), Laboratory of Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2012-03-24 Revised:2012-05-07 Online:2012-08-01 Published:2012-08-01

摘要: 采用一种快速、无模板、低成本的微波辅助水热法在 2 min 内制备了三维花状 Co3O4. 所用原料均是无机盐. 前驱体浓度和尿素的逐渐水解对 Co3O4 形貌影响很大. 制得的花状 Co3O4 比表面积大, 且暴露了 (110) 高活性指数面, 对 CO 氧化具有较高的催化活性.

关键词: 一氧化碳, 氧化, 四氧化三钴, 纳米结构, 微波

Abstract: 3D flowerlike Co3O4 nanostructures were prepared by a microwave-assisted hydrothermal method, which is a rapid, template-free, and low cost method. The product is obtained in two minutes using all inorganic precursors. The precursor concentration and gradual hydrolysis of urea determine the morphology of Co3O4 nanostructures. These flowerlike Co3O4 nanostructures have high surface area and expose largely active (110) planes, leading to relative high catalytic activity in CO oxidation.

Key words: carbon monoxide, oxidation, cobaltosic oxide, nanostructure, microwave