Synthesis of ZnO whiskers via hydrothermal decomposition route

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. 6; pp. 1049 - 1052
• Main Author: 史文涛 高国 向兰
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.06.2010; Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
• Subjects: basic zinc carbonate; Conversion; Decomposition; EDTA; hydrothermal decomposition; Hydrothermal treatment; Na2CO3; Nonferrous metals; Precursors; Synthesis; whiskers; Zinc oxide; 合成路线; 氧化锌晶须; 水热分解; 水热处理; 溶液pH值; 经济增长; basic zinc carbonate; hydrothermal decomposition; whiskers; zinc oxide
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(09)60256-9

ZnO whiskers with a length of 30-40μm and a diameter of about 1μm were synthesized by co-precipitation of ZnSO 4 and Na2CO3 solution at room temperature followed by hydrothermal treatment of the as-prepared Zn5（CO3）2（OH）6 precursor at 160 ℃for 6 h.The increase of the initial solution pH promotes the hydrothermal conversion of the particulate Zn5（CO3）2（OH）6 to ZnO whiskers.The presence of minor amount of EDTA in the hydrothermal solution promotes the one dimensional growth of ZnO whiskers,leading to the formation of ZnO whiskers with a length of 50-60μm and a diameter of 1-2μm.