title: The thermostability and reactivity of GaP nanocrystals in oxygen: from GaP nanocrystals to Ga2O3 nanocrystals.
abstract: The thermostability and reactivity of GaP nanocrystals in O(2) were investigated using the thermogravimetric analysis (TGA), differential thermal analysis (DTA), powder X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analysis techniques. alpha-Ga(2)O(3) nanoparticles, nano-hollow-particles, or nanorods and nanotubes can be separately obtained from the oxidation of nanocrystalline GaP at 400 degrees C for 30 min in dry O(2) atmosphere via manipulating different heating rates. Transmission electron microscopy (TEM) and energy-dispersive X-ray spectrometry (EDX) analysis showed that the products were all alpha-Ga(2)O(3) but with different morphologies when different heating rates were applied. The formation mechanisms of the different morphological alpha-Ga(2)O(3) nanocrystals were discussed.
authors.affiliation: Structure Research Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
authors.forename: Shanmin
authors.initials: S
authors.lastname: Gao
authors.forename: Yi
authors.initials: Y
authors.lastname: Xie
authors.forename: Liying
authors.initials: L
authors.lastname: Zhu
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Tian