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Hydrothermal synthesis of ultralong single‐crystalline α‐Ni(OH) 2 nanobelts and corresponding porous NiO nanobelts
Author(s) -
Liang Hui,
Liu Ling,
Yang Zhijie,
Yang Yanzhao
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200900732
Subject(s) - non blocking i/o , hydrothermal circulation , materials science , nucleation , dissolution , hydrothermal synthesis , chemical engineering , aqueous solution , nanotechnology , annealing (glass) , porosity , chemistry , catalysis , metallurgy , composite material , organic chemistry , engineering
Ultralong α‐Ni(OH) 2 nanobelts with uniform size have been prepared on large scale via a facile template‐free hydrothermal method. The as‐prepared nanobelts were single crystals, with several tens of microns in length and about 100 nm in width. For the whole process, a novel nucleation–aggregation–dissolution–seed‐directed growth mechanism was proposed based on the experimental results. The roles of aqueous ammonia and hydrothermal temperature were also discussed. Furthermore, porous NiO nanobelts were obtained by annealing the as‐prepared Ni(OH) 2 nanobelts. This facile, template‐free, and low cost method might feasibly be scaled up for industrial production. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)