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所属单位：航天学院

发表刊物：Ceram Int

摘要：TiO2 and ZnO based white paints are used worldwide to keep the buildings cool by reflecting solar heat flux. However, the cooling effect and lifetime of such coatings are limited by their band gap and fair reflectivity. Herein, scale-up synthesis of pure hexagonal ZnTiO3 pigment with an optical band gap of 3.75 eV is developed. It is found that the solar absorptance of the as-grown ZnTiO3 pigment is only 0.115, which is 0.038 and 0.044 lower in relation to the conventional ZnO and TiO2 pigments, respectively. Furthermore, the actual outdoor roof cooling test was performed at noon on a sunny day in summer. Interestingly, results found that while the ZnO white paint can decrease the roof temperature from 70.1 °C to 59.8 °C, the ZnTiO3 paint cools the roof from 70.1 °C to 55.2 °C. Compared to the 10.3 °C roof cooling effect of ZnO paint, the as-fabricated ZnTiO3 paint has a roof cooling effect as high as 14.9 °C, which is much more attractive for energy saving applications. © 2019 Elsevier Ltd and Techna Group S.r.l.

ISSN号：0272-8842

是否译文：否

发表时间：2019-01-01

合写作者：Tang, Mingzhang,全荣辉,Chai, Ziyi

通讯作者：吕金鹏