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.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (21071107, 21277094, 21103119), Production and Research Collaborative Innovation Project of Jiangsu Province (BY2012123), Natural Science Foundation of Jiangsu Province (BK2012167), Science and Technology Pillar Program (Industry) of Jiangsu Province (BE2012101), Collegiate Natural Science Fund of Jiangsu Province (12KJA430005, 11KJB430012), Jiangsu Key Laboratory for Photon Manufacturing (GZ201111), Jiangsu Provincial Key Laboratory for Interventional Medical Devices (Jr1210), Science and Technology Pillar Program (Industry) of Changzhou (CE20120067) and Creative Project of Postgraduate of Jiangsu Province(CXLX12_0635).
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Qian, J., Chen, Z., Liu, C. et al. Biotemplated fabrication of hierarchical mesoporous CeO2 derived from diatom and its application for catalytic oxidation of CO. Chin. Sci. Bull. 59, 3260–3265 (2014). https://doi.org/10.1007/s11434-014-0306-6
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DOI: https://doi.org/10.1007/s11434-014-0306-6