Formation of irregular nanocrystalline CeO 2 particles from acetate-based precursor via spray pyrolysis

Chin Yi Chen, Teng Kuan Tseng, Chien Yie Tsay, Chung Kwei Lin

研究成果: 雜誌貢獻文章同行評審

14 引文 斯高帕斯(Scopus)

摘要

Ultrasonic spray pyrolysis of acetate-based salt precursor with various concentrations is employed to produce nanocrystalline CeO 2 particles in this study. The mean particle size of as-pyrolyzed CeO 2 powders produced from precursor concentrations of 1.0, 0.1, and 0.01 wt.% are 350, 185, and 95 nm, respectively. We found that due to the low solubility of the precursor, the formation of a shell occurs during pyrolysis, leading the CeO 2 particles to be bowl-like in shape with uneven surfaces. Precursor concentrations significantly determine the size of the product particles. The bimodal size distribution of the product particles suggests that both one-particle-per-drop and gas-to-particle conversion mechanisms are active in the process.
原文英語
頁(從 - 到)20-24
頁數5
期刊Journal of Materials Engineering and Performance
17
發行號1
DOIs
出版狀態已發佈 - 2月 2008
對外發佈

ASJC Scopus subject areas

  • 材料科學(全部)
  • 材料力學
  • 機械工業

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