Controllable growth of ZnO microcrystals by a capping-molecule-assisted hydrothermal process
Controllable growth of ZnO microcrystals by a capping-molecule-assisted hydrothermal process
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DOI：
10.1021/cg049727f
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发表时间：
2005-03
影响因子：
3.8
通讯作者：
Hui Zhang;Deren Yang;Dongsheng Li;Xiangyang Ma;Shenzhong Li;D. Que
中科院分区：
文献类型：
--
作者：
Hui Zhang;Deren Yang;Dongsheng Li;Xiangyang Ma;Shenzhong Li;D. Que
采用封端分子辅助水热法可控地制备了不同形貌的ZnO微晶。以氨水、柠檬酸（CA）和聚乙烯醇（PVA）为封端剂，分别制备了六方相的花状、盘状和哑铃状ZnO微晶。光致发光（PL）谱中只有很强的λ 380 nm的紫外发射，表明这三种ZnO微晶具有较高的晶体质量。从唯象的角度提出了水热合成不同形貌微晶的形成机理。
Different shapes of ZnO microcrystals have been achieved controllably by a capping-molecule-assisted hydrothermal process. The flowerlike, disklike, and dumbbell-like ZnO microcrystals of hexagonal phase have been obtained respectively using ammonia, citric acid (CA), and poly(vinyl alcohol) (PVA) as the capping molecules. Only a very strong UV emission at ∼380 nm is observed in the photoluminescence (PL) spectra of the three kinds of ZnO microcrystals, indicative of their high crystal quality. The formation mechanisms for the hydrothermally synthesized microcrystals in different morphologies have been phenomenologically presented.