Journal of Inorganic Materials, Volume. 34, Issue 6, 599(2019)
The urban island effect and energy crisis can be relieved usefully by environmentally benign and high near-infrared reflective pigments, which is of great significance to develop of green energy-saving industry. Ions doping is an effective way to achieve the color diversity of high near infrared reflective pigments. In this work, a series of high near-infrared reflection Ba1-xCuxZr1-yTbyO3 (x=0.15, 0.25, 0.35; y=0, 0.15) inorganic pigment co-doped with Cu 2+and rare earth Tb 3+was prepared by a Sol-Gel process. Its phase structure, ultraviolet/visible/near-infrared reflectance, and color parameters of the synthesized pigment samples were investigated and characterized by X-ray diffraction (XRD), UV/Vis/NIR spectroscopy, and color CIE-L*a*b* 1976 color scales. The results demonstrate that all synthesized pigments have cubic perovskite structure after calcined at 1100 ℃. The co-doping of Cu 2+ and Tb 3+ is successfully introduced into the BaZrO3 lattice, and the color increasingly changes from white to gray, and to yellow with the increase of Cu 2+and Tb 3+concentration. Meanwhile, the obtained pigments possess high near-infrared solar reflectance in the range of 780-2500 nm, the average reflectance is up to 80%. Therefore, these Ba1-xCuxZr1-yTbyO3 cool powdered pigment have great application prospect in the building coatings.
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Shao-Dan ZHANG, Wei-Wei BAO, Hai-Ping MA.
Category: RESEARCH PAPER
Received: Sep. 3, 2018
Accepted: --
Published Online: Sep. 24, 2021
The Author Email: BAO Wei-Wei (baowei1834@163.com)