Synthesis of morphology-controllable mesoporous Co3O4 and CeO2

✍ Scribed by Yangang Wang; Yanqin Wang; Jiawen Ren; Yan Mi; Fengyuan Zhang; Changlin Li; Xiaohui Liu; Yun Guo; Yanglong Guo; Guanzhong Lu

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 772 KB
• Volume: 183
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2009.11.009

✦ Synopsis

Recently, extensive works have been devoted to the morphology control of mesoporous materials with respect to their use in various applications. In this paper, we used two kinds of mesoporous silica, SBA-15 rods and spheres as hard templates to synthesize morphology-controllable mesoporous metal oxides. By carefully controlling the loading of metal precursors in the mesopores of the hard template, mesoporous Co 3 O 4 and CeO 2 with different morphologies, such as micrometer-sized rod, hollow sphere, saucer-like sphere, and solid sphere were conveniently obtained. The structural properties of these materials were characterized by XRD, BET, SEM and TEM. In addition, it is found that the differences observed in the textural properties of the two mesoporous metal oxides nanocasted from the same template can be attributed to the properties of metal precursors and the interaction between metal oxide and SiO 2 . Thus-obtained mesoporous metal oxides with such special morphologies may have a potential application in the field of environmental catalytic oxidation.