Morphology-Controlled Synthesis of W18O49 Nanostructures and Their Near-Infrared Absorption Properties
Morphology-Controlled Synthesis of W18O49 Nanostructures and Their Near-Infrared Absorption Properties
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DOI：
10.1021/ic300049j
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发表时间：
2012-04-16
影响因子：
4.6
通讯作者：
Sato, Tsugio
中科院分区：
文献类型：
--
作者：
Guo, Chongshen;Yin, Shu;Sato, Tsugio
为实现新型节能窗的应用，系统研究了W18O49的形貌控制合成及其近红外吸收性能。以WCl6、W（EtO）（6）和WO3固体为钨源，有机醇为反应介质，通过溶剂热反应成功合成了各种形貌的W18O49，如纳米棒、纳米纤维、纳米颗粒、纳米组装体、纳米片和纳米颗粒。长度小于50 nm的W18O49纳米棒显示出最佳的光学性能，作为一种有效的太阳能过滤器，它实现了在可见光区的高透射率以及优异的近红外光屏蔽性能。同时，W18O49纳米棒还表现出对近红外光的强烈吸收，并将吸收的光能瞬间转化为局部热。
The morphology-controlled synthesis and near-infrared (NIR) absorption properties of W18O49 were systematically investigated for the application of innovative energy-saving windows. Various morphologies of W18O49, such as nanorods, nanofibers, nanograins, nanoassembles, nanoplates, and nanoparticles, with various sizes were successfully synthesized by solvothermal reactions using organic alcohols as reaction media and WCl6, W(EtO)(6), and WO3 solids as the tungsten source. W18O49 nanorods of less than 50 nm in length showed the best optical performance as an effective solar filter, which realized high transmittance in the visible region as well as excellent shielding properties of NIR light. Meanwhile, the W18O49 nanorods also exhibited strong absorption of NIR light and instantaneous conversion of the absorbed photoenergy to the local heat.