Aqueous route to size-controlled and doped organophilic ceria nanocrystals

Takaaki Taniguchi, Tomoaki Watanabe, Naonori Sakamoto, Nobuhiro Matsushita, Masahiro Yoshimura

研究成果: Article同行評審

69 引文 斯高帕斯(Scopus)

摘要

This paper presents an aqueous route to size-controlled and doped CeO 2 nanoparticles using the Ce-oleate complex as a chemically modified precursor. In this synthesis, a hydrolytic condensation of Ce-oleate complex by aqueous ammonia solution at room temperature leads to 2.2 nm sized CeO 2 nanocrystals. These products are dispersible in nonpolar solvents owing to the hydrophobic nature of the surface oleate ligand. Moreover, the size of the nanocrystals is controllable up to 5.2 nm by subsequent hydrothermal treatment at 200 °C. The proposed method can be extended for the synthesis of rare earth-doped CeO2 nanocrystals as well. The Gd3+ doped CeO2 nanocrystals synthesized by the proposed method exhibit a spherical shape (size ∼ 3.2 nm) and have a designed chemical composition by energy dispersive X-ray analysis, X-ray diffraction, Raman scattering, and transmission electron microscopy.

原文English
頁(從 - 到)3725-3730
頁數6
期刊Crystal Growth and Design
8
發行號10
DOIs
出版狀態Published - 2008 十月

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學

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