Synthesis of in-situ encapsulated ZnSxSe1-x/ZrSiO4 composite as cool pigment on ceramic tiles for energy saving
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An in-situ encapsulated ZnSxSe1-x@ZrSiO4 composite as a cool pigment on ceramic tiles was synthesized via soft mechanochemical(MC) pretreatment of ZrSiO4 precursors, high-shear homogeneous dispersing and subsequent sintering. Theproperties of ZnSxSe1-x@ZrSiO4 composite cool pigment and solar near-infrared (NIR) reflective ceramic tiles coated with thecool pigment were investigated by X-ray diffraction (XRD), Fourier transfer infrared spectroscopy (FTIR), thermogravimetryand differential scanning calorimetry (TG-DSC), scanning electron microscopy (SEM), ultraviolet-visible-near-infrared (UVVIS-NIR) spectroscopy and infrared irradiation image analysis. The results show that compared to ceramic tiles uncoated (R*= 60.07%), solar NIR reflective ceramic tiles coated with ZnSxSe1-x@ZrSiO4 composite cool pigment have a higher solarreflectance (R* = 87.61%), indicating that the ceramic tiles coated with the cool pigment have a superior NIR reflectivity. Thesurface temperature of ceramic tiles coated with ZnSxSe1-x@ZrSiO4 composite is 7.2 oC lower than that of ceramic tileuncoated with the cool pigment. In addition, the energy saving of ceramic tiles coated the cool pigment can be achieved basedon the energy simulation of solar NIR reflective ceramic tiles for ‘cool roof’ application in subtropical climate by a softwarenamed Design Builder 4.6.0.015.
Abstract
An in-situ encapsulated ZnSxSe1-x@ZrSiO4 composite as a cool pigment on ceramic tiles was synthesized via soft mechanochemical(MC) pretreatment of ZrSiO4 precursors, high-shear homogeneous dispersing and subsequent sintering. Theproperties of ZnSxSe1-x@ZrSiO4 composite cool pigment and solar near-infrared (NIR) reflective ceramic tiles coated with thecool pigment were investigated by X-ray diffraction (XRD), Fourier transfer infrared spectroscopy (FTIR), thermogravimetryand differential scanning calorimetry (TG-DSC), scanning electron microscopy (SEM), ultraviolet-visible-near-infrared (UVVIS-NIR) spectroscopy and infrared irradiation image analysis. The results show that compared to ceramic tiles uncoated (R*= 60.07%), solar NIR reflective ceramic tiles coated with ZnSxSe1-x@ZrSiO4 composite cool pigment have a higher solarreflectance (R* = 87.61%), indicating that the ceramic tiles coated with the cool pigment have a superior NIR reflectivity. Thesurface temperature of ceramic tiles coated with ZnSxSe1-x@ZrSiO4 composite is 7.2 oC lower than that of ceramic tileuncoated with the cool pigment. In addition, the energy saving of ceramic tiles coated the cool pigment can be achieved basedon the energy simulation of solar NIR reflective ceramic tiles for ‘cool roof’ application in subtropical climate by a softwarenamed Design Builder 4.6.0.015.
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