Synthesis and characterization of Co3O4 nanoparticles for use as pigments in solar absorbing paints
1 Grupo CLIOPE, Facultad Regional Mendoza, Universidad Tecnológica Nacional (UTN), Rodríguez 273, (M5502AJE) Mendoza, Argentina.
2 LQA – IANIGLA, CCT CONICET Mendoza, Av. Ruiz Leal s/n Parque Gral. San Martin, (M5502IRA) Mendoza, Argentina.
3 Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Juan J. Ronco” (CINDECA), CCT CONICET La Plata, Universidad Nacional de La Plata, 47 N° 257, La Plata (B1900AJK), Buenos Aires, Argentina.
Research Article
GSC Advanced Engineering and Technology, 2021, 01(02), 007–020.
Article DOI: 10.30574/gscaet.2021.1.2.0033
Publication history:
Received on 08 May 2021; revised on 15 June 2021; accepted on 18 June 2021
Abstract:
This aim of this research is to produce Co3O4 oxide by means of one-step solution novel combustion methods using aspatic acid (C4H7NO4); lysine (C6H14N2O2); tris (hydroximethyl) aminomethane (NH2C (CH2OH)3) and ethylene diamine tetra-acetic acid (C10H16N2O8) as fuels. The pigments were characterized using X-ray diffraction, scanning and transmission electron microscopy, infrared spectroscopy with Fourier transform and UV-VIS-IR Spectrophotometry.
The paint based on alkyd resin was made from pigments obtained (Co3O4 oxide). In order to make a comparison of the thermal emittance of the paint, two different formulations were prepared and these coating are named "absorbent paint coating": one that included 1% by weight of aluminum in metallic powder and another, with 1% of copper in metallic powder, respectively. The solar absorbance for the Co3O4 powders, plus quartz cuvette, gave a value of 0.9 in all cases. An extraordinary value of absorption on the coatings between 95 and 96% was noted. These results suggested that the synthesis of combustion in solution makes it possible to obtain a Co3O4 absorbent pigment with different fuels.
These syntheses have a low environmental impact because they are one-step processes. All use low amounts of reactive ash obtained at a calcination of about 500 °C. These results suggest the possibility of utilizing this oxide in absorbent solar paints.
Keywords:
Co3O4; Nanoparticles; Combustion synthesis; Solar absorption; Solar absorbing paints
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Copyright © 2021 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0
