三维花状Co3O4的低成本制备及其在催化CO氧化中的应用

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

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 ^1, , 窦智峰 ^2, , 刘华 ^3, , 宋卫国 ^4,

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

2.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

3.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

4.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

基金项目: 国家自然科学基金(21121063) 国家重点基础研究发展计划(973计划)(2009CB930400;2011CB933700)

关键词：一氧化碳 , 氧化 , 四氧化三钴 , 纳米结构 , 微波

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

CAO Changyan ^1, , DOU Zhifeng ^2, , LIU Hua ^3, , SONG Weiguo ^4,

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

2.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

3.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

4.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

Keywords： carbon monoxide , oxidation , cobaltosic oxide , nanostructure , microwave

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.

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 nanostmctures.These flowerlike Co3O4 nanostructures have high surface area and expose largely active (110) planes,leading to relative high catalytic activity in CO oxidation.

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