Optical property and thermal performance of hollow glass microsphere/BiOBr1-xIx composites as a novel colored near infrared reflective pigment
Optical property and thermal performance of hollow glass microsphere/BiOBr1-xIx composites as a novel colored near infrared reflective pigment
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新型彩色近红外反射颜料空心玻璃微球/BiOBr1-xIx复合材料的光学性能和热性能
DOI：
10.1016/j.dyepig.2018.02.038
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发表时间：
2018-07-01
影响因子：
4.5
通讯作者：
Fan, Yueming
中科院分区：
文献类型：
--
作者：
Gao, Qiang;Wu, Xiaomei;Fan, Yueming
本工作合成了中空玻璃微球/BiOBr1-XIX复合材料，作为一系列新型彩色近红外反射颜料。采用简单的化学液相沉积方法在中空玻璃微球上沉积了BiOBr1-XIX微花或微球。通过改变I和BR的摩尔比，发现复合颜料的形貌和光学性能有很大的不同。随着I含量的增加，复合颜料的颜色由白色变为黄色，再变为红色。随着I含量的增加，复合材料的带隙从2.87 eV减小到1.87 eV。中空玻璃微球/BiOBr1-XIX复合颜料的近红外太阳反射率高达0.952。涂有复合颜料的热箱外表面温度降低了约9.4摄氏度。因此，合成的颜色可调、近红外反射率高的复合颜料有可能作为冷颜料应用于冷涂料中，以减少生热。
In this work, hollow glass microsphere/BiOBr1-xIx composites was synthesized as a series of novel colored near infrared reflective pigments. BiOBr1-xIx microflowers or microspheres were deposited on hollow glass microspheres using a simple chemical liquid deposition method. The morphologies and optical properties of the composite pigments were found to differ drastically by varying the molar ratio of I to Br. The color of the composite pigments was observed to turn from white to yellow, and then to red as the increased content of I. The band gap of the composites decreased from 2.87 to 1.87 eV with increasing I content. The near infrared solar reflectance of hollow glass microsphere/BiOBr1-xIx composite pigments was as high as 0.952. An approximately 9.4 degrees C decrease in outer surface temperature was obtained for the heat box coated with the composite pigments. Therefore, the synthesized composite pigments with tunable colors and high NIR reflectance have the potential to be applied as cool pigments in cool coatings to reduce the heat build-up.