Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 9, Issue 6, Pages 1247-1251Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2007.01.029
Keywords
ZnO; taper-tubes; electroless deposition; galvanic replacement reaction
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In this communication, we report the hexagonal ZnO taper-tubes prepared through an electroless deposition method in an acidic medium based on a modified galvanic replacement reaction. Inspection of SEM images of ZnO suggests a one-step, acetic acid in situ crystallization/etching mechanism for producing tubular ZnO arrays. During electroless deposition reaction, the formation process may be rationalized by considering that the etching of ZnO with acetic acid starts from six sites located at the six corners of the top surface of ZnO truncated taper, resulting in a gradual widening of the open holes and tubular ZnO. The present electroless deposition strategy is versatile and with a potential to be developed into a more practical method. (c) 2007 Elsevier B.V. All rights reserved.
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