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EDTA‐assisted synthesis of rose‐like ZnO architectures
Author(s) -
Li Zhen,
Fang Yaoguo,
Peng Liwei,
Pan Dengyu,
Wu Minghong
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.201000299
Subject(s) - ethylenediaminetetraacetic acid , nanostructure , rose (mathematics) , photoluminescence , nanowire , molar ratio , materials science , nanotechnology , chemical engineering , morphology (biology) , chelation , chemistry , optoelectronics , organic chemistry , catalysis , metallurgy , geology , paleontology , geometry , mathematics , engineering
Rose‐like ZnO nanostructures were prepared by a low‐temperature solution route with assistance of ethylenediaminetetraacetic acid disodium (EDTA‐2Na). The morphology of ZnO nanostructures was found to change from nanowire arrays to rose‐ and tower‐like architectures with increasing the molar ratio of EDTA‐2Na/Zn 2+ . Also, the shape evolution of ZnO nanostructures with time was observed from flat nanosheets to wrinkled nanosheets and to rose‐like nanostructures. EDTA‐2Na as a strong complexing agent was found to play a key role in the shape evolution. Photoluminescence spectra show that the rose‐like ZnO architectures have more defects than the nanowire arrays. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)