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Controllable Synthesis of Y 2 O 3 Microstructures for Application in Cataluminescence Gas Sensing
Author(s) -
Zhang Lichun,
Hou Xiaoling,
Liu Ming,
Lv Yi,
Hou Xiandeng
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201002626
Subject(s) - yttrium , hydrothermal circulation , microstructure , materials science , nucleation , calcination , nanostructure , chemical engineering , oxide , nanorod , adsorption , scanning electron microscope , nanotechnology , hydrothermal synthesis , chemistry , catalysis , metallurgy , organic chemistry , composite material , engineering
Y 2 O 3 dumbbells, microspheres, and nanosheets were synthesized by a facile hydrothermal procedure followed by calcination. Electron microscopy, X‐ray diffraction, and N 2 adsorption measurements were used to characterize the yttrium oxide microstructures. On the basis of a time‐dependent study of nanostructure evolution and the effect of other processing parameters, a kinetic “homogeneous nucleation–self assembly–anisotropic growth” mechanism is proposed to explain the growth of these microstructures under hydrothermal conditions. The sensitivity of as‐prepared Y 2 O 3 structures to a series of gaseous chemicals was examined by using a homemade cataluminescence sensing system. The designed cataluminescence sensor based on the yttrium oxide dumbbells shows good sensing performance for 16 common volatile organic compounds.