铷、铯钨青铜粉末及其透明隔热薄膜的研究

Rubidium, cesium tungsten bronze powders and their transparent and thermal insulative thin films

摘要:

研究不同形貌的铷、铯钨青铜粉末及其薄膜的性能。通过水热反应制备棒状和片状的铷、铯钨青铜纳米粉末,并对粉末进行热处理,之后使用旋涂法在玻璃上制备钨青铜透明隔热薄膜。通过X射线衍射、扫描电镜、透射电镜等对粉末进行表征,并研究其光热性能。使用紫外可见近红外光谱分析钨青铜薄膜近红外屏蔽性能,并测试其隔热性能。结果表明,热处理后的钨青铜粉末具有优异的光热性能,具有光热治疗癌症的应用前景。相比于棒状,片状的铷、铯钨青铜薄膜具有更高的近红外屏蔽率,分别为95%和98.8%。使用片状铷、铯钨青铜薄膜的玻璃室内温度相比使用空白玻璃分别下降了9.4℃和8.5℃。综上,片状铷、铯钨青铜具有优异的近红外屏蔽性能,在节能和光热治疗领域具有巨大的应用前景。

Abstract:

In order to investigate the properties of rubidium tungsten bronze and cesium tungsten bronze nanopowders with different shapes and their film, rubidium and cesium tungsten bronze nanopowders were prepared by hydrothermal reaction and a subsequent heat-treatment. Tungsten bronze transparent insulation film was prepared by spin coating method on a piece of glass. The synthesized powders were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy, and the photothermal properties of the powders were studied. The near infrared shielding performance and heat insulation performance of tungsten bronze films were analyzed by UV-Vis NIR spectroscopy. The results show that the tungsten bronze nanopowders after heat treatment have excellent photothermal properties and have a promising application prospect in cancer photothermal therapy. Compared with the film made by rod-shaped powers, the film made by laminar rubidium and cesium-tungsten bronze powders have higher near-infrared shielding performance of 95% and 98.8%, respectively. Compared with blank glass, the indoor temperature using glass with laminar rubidium and cesium tungsten bronze films decreased by 9.4℃ and 8.5℃ respectively. In summary, sheet rubidium and cesium tungsten bronze have excellent near-infrared shielding performance, and have great application prospects in the fields of energy saving and photothermal therapy.