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Morphological dependence of hydrothermally synthesized Zn O nanowires on synthesis temperature and molar concentration
Author(s) -
Choi Koang Ouk,
Yoon Sang Hyun,
Kim WonSeok,
Lee KyuHa,
Yang CheolMin,
Han Jong Hun,
Kang Chi Jung,
Choi Young Jin,
Yoon TaeSik
Publication year - 2013
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201329003
Subject(s) - hexamethylenetetramine , zinc nitrate , wurtzite crystal structure , nanowire , hydrothermal circulation , materials science , zinc , hydrothermal synthesis , molar concentration , molar , molar ratio , chemical engineering , nanometre , atmospheric temperature range , nanotechnology , chemistry , catalysis , composite material , organic chemistry , metallurgy , medicine , physics , dentistry , meteorology , engineering
The hydrothermal synthesis behavior of ZnO nanowire (NW) on carbon nanotubes (CNTs) with respect to molar concentrations of zinc nitrate hexahydrate and hexamethylenetetramine and temperature was investigated. The ZnO NWs could be synthesized with a single‐crystalline wurtzite structure and a diameter in the range of tens of nanometers. Their size does not strongly depend on the temperature, while it increases with increasing molar concentration. The NWs tend to have pyramidal shape at a growth front with increasing temperature and molar concentration probably due to enriched Zn 2+ ion concentration. This demonstrates the morphological dependence of ZnO NWs on the relative rates between the decomposition of Zn precursor and subsequent oxidation of Zn to ZnO in hydrothermal synthesis.