Journal of the American Chemical Society 2006-07-26

Ambient pressure syntheses of size-controlled corundum-type In2O3 nanocubes.

Chang Hoon Lee, Minsik Kim, Taekhoon Kim, Ansoon Kim, Jungsun Paek, Ju Wook Lee, Sung-Yool Choi, Kyuwon Kim, Jong-Bong Park, Kwangyeol Lee

文献索引：J. Am. Chem. Soc. 29th ed., 128 , 9326, (2006)

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摘要

Hydrolysis of In(O-iPr)3 by 10 molar excess of water at 90 degrees C in a surfactant/solvent mixture of oleylamine/oleic acid/trioctylamine provides very small nanoparticles (<5 nm in diameter) of In(O)(OH). Subsequent in situ thermolysis of the formed In(O)(OH) nanoparticles at 350 degrees C and ambient pressure produces monodisperse h-In2O3 nanocubes, which can form an extended two-dimensional array on a flat surface. The size of the In2O3 nanocubes (8, 10, and 12 nm) could be easily controlled by the simple change in the amounts of employed surfactants. The h-In2O3 nanocube samples show blue PL emissions at room temperature due to, presumably, systematic oxygen vacancy.