Solvothermal synthesis of Sb:SnO2 nanoparticles and IR shielding coating for smart window
Solvothermal synthesis of Sb:SnO2 nanoparticles and IR shielding coating for smart window
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DOI：
10.1016/j.matdes.2015.09.013
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发表时间：
2015-12-25
影响因子：
8.4
通讯作者：
Kong, Lingbing
中科院分区：
文献类型：
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作者：
Huang, Hui;Ng, Minghong;Kong, Lingbing
像新加坡这样的热带气候的建筑物全年都会获得过多的热量。被动冷却可以通过屏蔽太阳光线的红外辐射涂层来实现。本文采用溶剂热法合成了直径为10 nm的掺锑氧化锡（ATO）纳米晶体。优化了锑掺杂在ATO纳米颗粒中的浓度，以增强其红外屏蔽性能。溶胶-凝胶前驱体由硅烷和ATO纳米晶体组成。在智能窗玻璃上涂覆了透明红外屏蔽涂层。对涂层的光学和红外屏蔽性能进行了评价。通过加入溶剂热合成的更小的ATO纳米晶体，与使用更大的商用ATO纳米颗粒相比，涂层的红外屏蔽性能大大提高。合成ATO纳米晶的红外屏蔽涂层可以阻挡90%以上的红外，同时在可见光范围内保持80%以上的透过率。含10 wt.%合成ATO纳米晶的单层涂层的太阳热增益系数（SHGC或g值）为0.68，双层结构涂层的太阳热增益系数（SHGC或g值）降至0.53，同时保持60%的良好可见光透过率。(C) 2015 Elsevier Ltd.版权所有。
The buildings in tropical climate like Singapore get excessive heat gain throughout the year. Passive cooling can be achieved with IR-shielding coating by blocking the IR radiation from solar light. In this work, antimony-doped tin oxide (ATO) nanocrystals with diameter of 10 nm were synthesized by solvothermal method. The Sb dopant concentration in ATO nanoparticles was optimized towards enhanced IR shielding properties. Sol-gel precursor was formulated with silanes and ATO nanocrystals. Transparent IR shielding coatings were coated on glass for smart window. The optical and IR shielding performance of the coatings were evaluated. By incorporating smaller ATO nanocrystals synthesized by solvothermal synthesis, the IR shielding performance of the coating was greatly improved as compared to that using larger commercial ATO nanoparticles. The IR shielding coating with synthesized ATO nanocrystals can block more than 90% IR while it can maintain more than 80% transmittance at the visible range. The solar heat gain coefficient (SHGC or G-value) of the coating with 10 wt.% synthesized ATO nanocrystals is 0.68 for single layer structure, and decreases to 0.53 with double glazing structure while maintaining good visible transmittance of 60%. (C) 2015 Elsevier Ltd. All rights reserved.