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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Synthesis and Characterization of ZnO Nanorods and Nanodisks from Zinc Chloride Aqueous Solution | Nanoscale Res Lett 2009 4 247-253 DOI 10.1007 S11671-008-9233-2 NANO EXPRESS Synthesis and Characterization of ZnO Nanorods and Nanodisks from Zinc Chloride Aqueous Solution Tengfa Long Shu Yin Kouta Takabatake Peilin Zhnag Tsugio Sato Received 12 November 2008 Accepted 2 December 2008 Published online 16 December 2008 to the authors 2008 Abstract ZnO nanorods and nanodisks were synthesized by solution process using zinc chloride as starting material. The morphology of ZnO crystal changed greatly depending on the concentrations of Zn2 ion and ethylene glycohol EG additive in the solution. The effect of thermal treatment on the morphology was investigated. Photocatalytic activities of plate-like Zn5 OH 8Cl2 H2O and rod-like ZnO were characterized. About 18 of 1 ppm NO could be continuously removed by ZnO particles under UV light irradiation. Keywords ZnO nanorod ZnO nanodisk Photocatalytic activity Zinc chloride Introduction Zinc oxide with a hexagonal wurtzite crystal structure possesses unique optical and electronic properties and wide applications on piezoelectric devices transistors photodiodes photocatalysis 1-4 etc. In recent years much attention has been paid to nanostructure ZnO materials and various morphologies of ZnO such as nanowire nanorod nanotube nanobelt nanoring nanoneedles and hollow structures etc. have been developed 5-14 . Many methods have been employed for the morphological control of ZnO crystal such as pulsed laser deposition PLD 15 chemical vapor deposition 16 spray pyrolysis T. Long Guangxi Normal University Guilin People s Republic of China T. Long S. Yin El K. Takabatake P. Zhnag T. Sato IMRAM Tohoku University Sendai Japan e-mail shuyin@tagen.tohoku.ac.jp 17 18 thermal evaporation 19 wet-chemical route 20 21 etc. in which the wet chemical route has been becoming a charming method due to the mild reaction condition and simplicity of the synthesis process. It is important to prepare well-crystallized and orientated ZnO nanoparticles. In .
