Controllable synthesis and evolution mechanism of tungsten bronze nanocrystals with excellent optical performance for energy-saving glass
Controllable synthesis and evolution mechanism of tungsten bronze nanocrystals with excellent optical performance for energy-saving glass
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节能玻璃用优异光学性能钨青铜纳米晶的可控合成及演化机理
DOI：
10.1039/c8tc02740d
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发表时间：
2018-07
影响因子：
6.4
通讯作者：
Chen Jian-Feng
中科院分区：
文献类型：
--
作者：
Huang Xie-Jun;Bao Jun;Han Yue;Cui Chang-Wei;Wang Jie-Xin;Zeng Xiao-Fei;Chen Jian-Feng
具有所需结构和形貌的纳米晶体的可控合成仍然是化学和材料领域的巨大挑战。在这项工作中，我们报道了一种简单的溶剂热方法，通过调节反应体系中H+和H2O的量，可控合成具有不同形貌和晶相的钠和铯掺杂钨青铜纳米晶（NaxCsyWO3（NaCWO））。此外，还通过溶液混合方法制备了高透明度的ethocel/NaCWO薄膜。对 NaCWO 纳米晶体的生长机制进行了系统研究，并探讨了结构-性能关系。结果表明，所制备的两种具有四种形貌的晶相NaCWO纳米晶可以单分散在甲苯中形成透明的纳米分散体。在这些系统中，具有棒状六角纳米晶体的系统表现出最优异的近红外吸收性能，在1000 nm处具有3.5%的近红外透过率，同时在440 nm处具有84%的高可见光透过率。由于纳米晶良好的分散性，NaCWO含量为10%乙醇树脂重量的乙醇/NaCWO薄膜保持了与纳米分散体相同的光学性能，这对于开发应用于节能玻璃、太阳能集热器、滤光片等的近红外吸收材料具有重要意义。
The controllable synthesis of nanocrystals with a desired structure and morphology is still a great challenge in the chemistry and materials fields. In this work, we report a simple solvothermal method for the controllable synthesis of sodium and cesium doped tungsten bronze nanocrystals (NaxCsyWO3 (NaCWO)) with different morphologies and crystalline phases, through adjusting the amounts of H+ and H2O in the reactive system. Furthermore, ethocel/NaCWO films with high transparency are also fabricated via a solution mixing method. The growth mechanisms of the NaCWO nanocrystals are investigated systematically, and structure–property relationships are also explored. Results indicate that the as-prepared two kinds of crystalline phase NaCWO nanocrystals with four morphologies can be monodispersed in toluene to form transparent nanodispersions. Among these systems, the one with rod-shaped hexagonal nanocrystals exhibits the most excellent near-infrared absorption properties, with 3.5% near-infrared transmittance at 1000 nm, and it simultaneously holds high visible light transmittance of 84% at 440 nm. Owing to the good dispersion of the nanocrystals, the ethocel/NaCWO film with an NaCWO content of 10 per hundred of ethocel resin by weight maintains the same optical performance as the nanodispersion, which is significantly important for the development of NIR absorption materials applied to energy-saving glass, solar collectors, optical filters, etc.
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影响因子：
2.7
作者：
Adachi, Kenji;Miratsu, Mitsunobu;Asahi, Tsuyoshi
通讯作者：
Asahi, Tsuyoshi
影响因子：
16.6
作者：
Xia, Younan;Xiong, Yujie;Lim, Byungkwon;Skrabalak, Sara E.
通讯作者：
Skrabalak, Sara E.
影响因子：
41.2
作者：
Luther, Joseph M.;Jain, Prashant K.;Alivisatos, A. Paul
通讯作者：
Alivisatos, A. Paul
影响因子：
3.9
作者：
Soultanidis, Nikolaos;Zhou, Wu;Wong, Michael S.
通讯作者：
Wong, Michael S.
影响因子：
3.5
作者：
I. Matolínová;M. Gillet;E. Gillet;V. Matolín
通讯作者：
I. Matolínová;M. Gillet;E. Gillet;V. Matolín