One-step synthesis of flower-like Au-ZnO microstructures at room temperature and their photocatalytic properties
One-step synthesis of flower-like Au-ZnO microstructures at room temperature and their photocatalytic properties
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DOI：
10.1007/s00339-012-7441-1
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Cong Chen;Yang-Ming Lu;Haiping He;K. Wu;Z. Ye
中科院分区：
文献类型：
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作者：
Cong Chen;Yang-Ming Lu;Haiping He;K. Wu;Z. Ye
本文采用一步水溶液法在室温下合成了形貌和尺寸可控的三维花状Au-ZnO微结构，并研究了其光催化性能。所制备的Au-ZnO花状结构直径约3 μm，由多个相互作用的ZnO纳米片组成。这些被Au NPs成功修饰的纳米片显示出10 nm的平均厚度和具有{2-1-10}平面表面的单晶结构。研究了Au-ZnO结构的生长过程以及柠檬酸三钠对ZnO成核和生长的影响。本实验还对Au纳米粒子的形成进行了讨论。Au-ZnO复合结构的光催化活性高于纯ZnO。
In this paper, 3D flower-like Au-ZnO microstructures with controlled morphology and dimensions were synthesized by a facile one-step aqueous solution route at room temperature, and the photocatalytic properties of these structures were investigated. The as-prepared flower-like Au-ZnO structures with a diameter of about 3 μm consisted of many ZnO nanosheets which interacted with each other. These nanosheets, which were successfully decorated by Au NPs, showed an average thickness of 10 nm and a single-crystalline structure with {2-1-10} planar surfaces. The growth process of Au-ZnO structures and the effects of trisodium citrate on the nucleation and growth of ZnO were investigated. The formation of Au NPs in this experiment was discussed too. The Au-ZnO structures showed higher photocatalytic activity than that of pure ZnO.