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

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.

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.

Graphical abstract3D flowerlike Co3O4 nanostructures were prepared by a rapid, low cost, template-free, and microwave-assisted hydrothermal method in 2 min using inorganic precursors, and they show high catalytic activity in CO oxidation.Figure optionsDownload full-size imageDownload as PowerPoint slide