微波加热辅助的VO₂纳米颗粒的相变
Phase transformation of VO2 nanoparticles assisted by microwave heating.
作者信息
Phoempoon Phatcharee, Sikong Lek
机构信息
Department of Mining and Materials Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai 90112, Thailand ; CENE Center of Excellence in Nanotechnology for Energy, Prince of Songkla University, Hat Yai 90112, Thailand.
出版信息
ScientificWorldJournal. 2014 Feb 4;2014:841418. doi: 10.1155/2014/841418. eCollection 2014.
The microwave assisted synthesis nowadays attracts a great deal of attention. Monoclinic phase VO2 (M) was prepared from NH4VO3 and H2C2O4 · 2H2O by a rapid microwave assisted technique. The synthesis parameters, microwave irradiation time, microwave power, and calcinations temperature were systematically varied and their influences on the structure and morphology were evaluated. The microwave power level has been carried out in range 180-600 W. TEM analysis demonstrated nanosized samples. The structural and morphological properties were measured using XRD, TEM, and thermal analyses. The variations of vanadium phase led to thermochromic properties.
如今，微波辅助合成法备受关注。采用快速微波辅助技术，以偏钒酸铵和草酸二水合物制备了单斜相VO₂(M)。系统地改变了合成参数，如微波辐照时间、微波功率和煅烧温度，并评估了它们对结构和形貌的影响。微波功率水平在180 - 600 W范围内进行。透射电子显微镜（TEM）分析表明样品为纳米尺寸。使用X射线衍射（XRD）、透射电子显微镜（TEM）和热分析来测量结构和形貌特性。钒相的变化导致了热致变色性能。
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