Issue 5, 2001
From the journal:

Green Chemistry

Low-toxicity red ceramic pigments for porcelainised stoneware from lanthanide–cerianite solid solutions

A. García,a   M. Llusar,a   J. Calbo,a   M. A. Tenaa  and  G. Monrósa  

a Dpt. of Inorganic and Organic Chemistry, University Jaume I, Castellón, Spain.
E-mail: monros@qio.uji.es

Abstract

Ln–CeO2 (Ln = Pr, Tb, Eu) and M–CeO2 solid solutions (reference samples with M = Cr or In, as transition and main group elements, respectively) have been prepared by ceramic and coprecipitation routes. The resulting coloured materials have been checked as potential pigments for porcelainised stoneware. The colouring mechanism is based on the introduction of an additional electronic level of energy in cerianite forbidden band, arising from unpaired 4f electrons of lanthanide ions. The red ceramic pigments obtained have been found to be interesting alternatives for the coloration of porcelainised stoneware bodies. In addition, they present a much lower toxicity than classical cadmium sulfoselenide or chromium–LnAlO3 based red pigments, because both the chromophoric agent (praseodymium and europium ions) and ceramic matrix (cerianite) contain lanthanide elements.

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Article information

DOI
https://doi.org/10.1039/B105830B
Article type
Paper
Submitted
03 Jul 2001
First published
13 Sep 2001

Green Chem., 2001,3, 238-242

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Low-toxicity red ceramic pigments for porcelainised stoneware from lanthanide–cerianite solid solutions

A. García, M. Llusar, J. Calbo, M. A. Tena and G. Monrós, Green Chem., 2001, 3, 238 DOI: 10.1039/B105830B

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