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Multiporous ceria nanoparticles prepared by spray pyrolysis

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Abstract

The morphology of ceria nanoparticles prepared by spray pyrolysis (SP) from cerium (III) acetate and cerium (III) nitrate hydrate precursors were characterized by transmission electron microscopy. It was observed that using the nitrate as a precursor, particles containing multiple pores in the core can be prepared preferentially as opposed to the acetate precursor, when particles with predominantly a single pore were obtained. It was also found that the number of pores in the particles strongly correlates with the particle diameter. It is shown that predominantly multiporous particles for possible catalytic applications may be obtained by selecting particles with diameters between 50 and 100 nm and using cerium nitrate hydrate as a precursor. A mechanism leading to formation of multiporous ceria nanoparticles in the case of using the nitrate precursor in the SP process is discussed based on thermogravimetric analysis (TGA) data.

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Acknowledgments

This work was partially funded by the National Science Council of Taiwan (Grant No. NSC 97-2221-E-035-003-MY2). The authors wish to acknowledge valuable discussions with Dr Guoqiang Li and his technical assistance.

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Correspondence to Chin-Yi Chen.

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Shih, SJ., Borisenko, K.B., Liu, LJ. et al. Multiporous ceria nanoparticles prepared by spray pyrolysis. J Nanopart Res 12, 1553–1559 (2010). https://doi.org/10.1007/s11051-010-9863-z

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  • DOI: https://doi.org/10.1007/s11051-010-9863-z

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