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

被引：50

作者：

García, A ^{[1
]}

Llusar, M ^{[1
]}

Calbo, J ^{[1
]}

Tena, MA ^{[1
]}

Monrós, G ^{[1
]}

机构：

[1] Univ Jaume 1, Dept Inorgan & Organ Chem, Castellon De La Plana, Spain

来源：

GREEN CHEMISTRY | 2001年 / 3卷 / 05期

关键词：

D O I：

10.1039/b105830b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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-LnAlO(3) based red pigments, because both the chromophoric agent (praseodymium and europium ions) and ceramic matrix (cerianite) contain lanthanide elements.

引用

页码：238 / 242

页数：5

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