Self-assembly of ZnO nanoparticles into hollow microspheres via a facile solvothermal route and their application as gas sensor
Self-assembly of ZnO nanoparticles into hollow microspheres via a facile solvothermal route and their application as gas sensor
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DOI：
10.1039/c3ce40654g
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发表时间：
2013-01-01
期刊：
影响因子：
3.1
通讯作者：
Liu, Lianhe
中科院分区：
文献类型：
--
作者：
Chen, Xiaoshuang;Jing, Xiaoyan;Liu, Lianhe
为了丰富氧化锌（ZnO）的种类，以聚乙二醇400 （PEG 400）为溶剂，通过简单的溶剂热法成功地合成了由大量纳米颗粒自组装而成的结构清晰的氧化锌空心微球。peg400作为非离子表面活性剂在ZnO空心球的形成过程中起着至关重要的作用。可能的形成机制被描述为纳米颗粒的自组装、奥斯特瓦尔德成熟和晶体生长过程。研究了ZnO空心球的气敏性能。结果表明，制备的ZnO空心球结构是一种很有前途的气敏材料。此外，空心结构以其独特的性能和广泛的应用前景引起了人们的广泛关注。该化学技术有望用于制备其他金属氧化物或空心结构。
In order to enrich the variety of zinc oxide (ZnO), well-defined ZnO hollow microspheres self-assembled by a mass of nanoparticles were successfully synthesized through a facile solvothermal process employing polyethylene glycol 400 (PEG 400) as the solvent. PEG 400 played a crucial role as a nonionic surfactant in the formation of the ZnO hollow spheres. The plausible formation mechanism was described as self-assembly of nanoparticles, Ostwald ripening, and crystal growth process. The gas sensing performances of the ZnO hollow spheres have been investigated carefully. The results indicate that the prepared ZnO hollow sphere architecture is a promising material for gas sensing applications. In addition, hollow structures have attracted considerable attention because of their unique properties and wide potential applications. The present chemical technique is expected to be useful to prepare other metal oxides or hollow architectures.