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Biotemplated fabrication of hierarchical mesoporous CeO2 derived from diatom and its application for catalytic oxidation of CO |
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| Authors: | Junchao Qian Zhigang Chen Chengbao Liu Fang Wang Yuzhu Zhang Mengmeng Wang |
| Affiliation: | 1. Department of Material Science and Engineering, Jiangsu University, Zhenjiang, 212013, China 2. Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou, 215009, China 3. School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China 4. Department of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China |
| Abstract: | Hierarchically hollow nanostructures have been the focus of numerous studies due to their prominent physicochemical properties that differ significantly from bulk materials and their potential for extensive applications. We present a novel diatom-based scaffold for the synthesis of hierarchically biomorphic CeO2 with special porous structure via incorporating Ce ions into the frustule. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and nitrogen adsorption-desorption measurements were adopted to characterize the products. Owing to its unique hierarchical structure and periodic meso-macro scale features, the obtained CeO2 exhibits high catalytic activity in CO oxidation. This facile strategy may design a new way towards replicating desired biological structures for metal oxide catalyst in other potential applications. |
| Keywords: | Biotemplate Diatom CO oxidation CeO2 Oxygen vacancy |
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