Shih, Shao-Ju and Borisenko, Konstantin B. and Liu, Li-Jr and Chen, Chin-Yi (2010) Multiporous ceria nanoparticles prepared by spray pyrolysis. Journal of Nanoparticle Research, 12 (5). pp. 1553-1559.
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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.
|Uncontrolled Keywords:||Catalyst - Ceria - Porous - Transmission electron microscopy - Synthesis method|
|Subjects:||Material Science > Nanofabrication processes and tools|
Material Science > Nanostructured materials
|Deposited On:||08 Jun 2010 17:32|
|Last Modified:||08 Jun 2010 17:32|
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