Eco-friendly polyfunctional ceramic pigments: an approach
Abstract
Purpose
The purpose of this study is the synthesis and characterization of a CMYK palette (cyan of Cr-BiVO4, magenta of Pr-CeO2, yellow of Bi-(Ce,Zr)O2 composite and black of YMnO3) as an eco-friendly polyfunctional palette that combines (a) high near-infrared reflectance (cool pigments) that allows moderate temperatures in indoor environments and the urban heat island effect; (b) photocatalytic activity for the degradation of organic contaminants of emerging concern of substrates in solution (such as Orange II or methylene blue) and gaseous (NOx and volatile organic compounds such as acetaldehyde or toluene); (c) X-ray radiation attenuators associated with bismuth ions; and (d) biocidal effect combined with co-doping with bactericidal agents.
Design/methodology/approach
Pigments were prepared by a solid-state reaction and characterized by X-ray diffraction, diffuse reflectance spectroscopy, photocatalytic activity over Orange II and scanning electron microscopy.
Findings
The behaviour of the proposed palette was compared to that of a commercial inkjet palette, and an improvement in all functionalities was observed.
Social implications
The functionalities of pigments allow the building envelope and indoor walls to exhibit temperature-moderating effects (with the additional effects of moderating global warming and increasing air conditioning efficiency), purification and disinfection of both indoor and outdoor air, and radiation attenuation.
Originality/value
The proposed palette and its polyfunctional characterization are novel.
Keywords
Acknowledgements
Ethics statement: This research work entitled “New eco-friendly polyfunctional ceramic pigments” was designed and planned by the Environmental Inorganic Chemistry and Ceramic Materials Research Group of Jaume I University to be carried out in strict adherence to the research methodology and standards of research ethics in ceramics and the environment.
The authors gratefully acknowledge the financial support of the Universitat Jaume I (UJI B2021-73 Project).
Citation
Monrós, G., Llusar, M. and Badenes, J.A. (2023), "Eco-friendly polyfunctional ceramic pigments: an approach", Pigment & Resin Technology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/PRT-04-2022-0038
Publisher
:Emerald Publishing Limited
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