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Sol–Gel Combustion‐Derived CoCuMnO x Spinels as Pigment for Spectrally Selective Paints
Author(s) -
Geng QingFen,
Zhao Xin,
Gao XiangHu,
Liu Gang
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04182.x
Subject(s) - spinel , materials science , fourier transform infrared spectroscopy , x ray photoelectron spectroscopy , analytical chemistry (journal) , diffuse reflectance infrared fourier transform , spectroscopy , scanning electron microscope , thermal stability , combustion , mineralogy , optics , chemical engineering , chemistry , metallurgy , composite material , physics , photocatalysis , biochemistry , chromatography , quantum mechanics , engineering , catalysis
In this work, sol–gel combustion synthesis of spinel CoCuMnO x was reported. X‐ray diffraction (XRD) and Fourier transformation infrared spectroscopy (FTIR) techniques were used to study the reaction processes. The as‐synthesized spinel CoCuMnO x was further characterized by XRD, X‐ray photoelectron spectroscopy, and field‐emission scanning electron microscopy. The CoCuMnO x powders with a deep black hue were then used as solar energy‐absorbing additive to make a novel kind of spectrally selective paint coatings. The solar absorptance (α s ) and the thermal emittance (ɛ T ) of the coatings were determined from the corresponding diffuse reflectance spectra in the 0.3–20 μm range. The optimum selective sample exhibited values of α s =0.928 and ɛ 100 =0.198. Besides ideal optical properties, the coatings also show excellent long‐term stability, which is confirmed by results of accelerated tests established by IEA‐SHC Task X, indicating that they could be a good alternative to the materials present today in the market.