Effects of organic solvents on morphologies, photoluminescence, and photocatalytic properties of ZnO nanostructures
Effects of organic solvents on morphologies, photoluminescence, and photocatalytic properties of ZnO nanostructures
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有机溶剂对ZnO纳米结构形貌、光致发光和光催化性能的影响
DOI：
10.1049/mnl.2018.5289
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发表时间：
2019
影响因子：
1.3
通讯作者：
Lei Ming
中科院分区：
文献类型：
--
作者：
Liang Ce;He Xian;Cai Zhiwei;Chang Gang;Lin Sen;Hao Yanan;Du Yinxiao;Fan Dongyu;Wang Yonggang;Bi Ke;Lei Ming
以有机金属乙酰丙酮锌（Zn（acac）2）为锌源，在不同极性有机溶剂中采用溶剂热法合成了不同形貌的氧化锌（ZnO）。分别在甲醇、乙醇、正丙醇、异丙醇和丙酮的NaOH溶液中制备了不同尺寸的准球形和棒状结构。此外，它们的微观结构和形貌进行了研究，通过X射线粉末衍射和电子显微镜。提出了一种可能的生长机制。ZnO的各种形貌归因于有机溶剂的极性和粘度以及反应物的过饱和水平的差异。此外，还研究了不同结构ZnO的尺寸依赖性光致发光和光催化性能。研究表明，ZnO纳米粒子的表面态和比表面积与其暴露的极性面以及粒径大小有关，从而导致了ZnO纳米粒子具有不同的但有规律的光电行为。
Employing organo-metal zinc acetylacetonate (Zn(acac)2) as the zincic source, various zinc oxide (ZnO) products with different morphologies have been synthesised via a typical solvothermal method in different polar organic solvents. Quasi-spherical and rod-like structures with diverse sizes are successfully fabricated in the methanol, ethanol, 1-propanol, isopropanol, and acetone solutions of NaOH, respectively. Moreover, their microstructures and morphologies have been investigated by X-ray powder diffraction and electron microscopy. A possible growth mechanism has been proposed. The various morphologies of ZnO are attributed to the discrepant polarity and viscosity of organic solvents and the supersaturation levels of reactants. Furthermore, the size-depended photoluminescence and photocatalytic properties of various structures of ZnO are also studied. It is believed that the different but regular photoelectric behaviours are resulting from the surface states and specific surface areas which are related to the exposed polarity facets as well as the size of ZnO particles.