Abstract
Walls of buildings fitted with functional materials are beneficial for saving energy and increasing the comfort level. The Ce–Eu/TiO2 phase change material mixed with gypsum as wall plaster materials could purify indoor air, store heat energy, and also control air humidity. This paper studied the thermal-photocatalytic-humidity performance of gypsum based functional materials for residential walls and evaluated the effects of its application. The latent heat of gypsum based functional materials was 23.57 J/g, whereas the phase transition temperature of 16.81–24.97 °C, which was a comfortable temperature range for humans. After 11 h of testing the formaldehyde concentration decreased from 1.0 to 0.3144 mg m−3 and the degradation rate reached 68%. The maximum temperature difference between the experiment room and the contrast room could reach 3.9 °C. The relative humidity indoors of the experiment room was 38.40–62.30%, which was much more stable than that of the contrast room.
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