Synthesis and Color Evaluation of Tb4+-Doped Na2ZrO3 for Inorganic Yellow Pigments
Synthesis and Color Evaluation of Tb4+-Doped Na2ZrO3 for Inorganic Yellow Pigments
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DOI：
10.3390/colorants1030020
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发表时间：
2022-08
期刊：
影响因子：
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通讯作者：
Ryohei Oka;Tomoyo Nouchi;Toshiyuki Masui
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文献类型：
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作者：
Ryohei Oka;Tomoyo Nouchi;Toshiyuki Masui
采用传统固相反应方法合成了 Tb4+ 掺杂锆酸钠样品 Na2Zr1−xTbxO3，作为新型环保无机黄色颜料。对它们的晶体结构、光学性质和颜色进行了表征。 x ≤ 0.18 范围内的样品获得单相形式，而 x = 0.20 范围内的样品检测到杂质相。由于 O2− 和 Tb4+ 之间的电荷转移跃迁，所有样品在蓝光区域均表现出强烈的光学吸收。结果，样品颜色变成黄色，这是蓝色的补色，并且随着单相区 Tb4+ 含量的增加，颜色变得更加鲜艳。样品中，Na2Zr0.82Tb0.18O3 是最佳成分，具有最高的黄度（b* = +67.2）和纯黄色色调（h° = 90.1）。尽管 b* 值低于 BiVO4 和 ZrSiO4:Pr 等商用黄色颜料，但该样品具有更纯的黄色色调。由于Na2Zr0.82Tb0.18O3由无毒元素组成，因此可以成为一种新型环保无机黄色颜料。
Tb4+-doped sodium zirconate samples, Na2Zr1−xTbxO3, were synthesized as novel environmentally friendly inorganic yellow pigments by a conventional solid-state reaction method. Their crystal structures, optical properties, and colors were characterized. A single-phase form was obtained for the samples in the x range of x ≤ 0.18, while impurity phases were detected for the sample with x = 0.20. All samples showed strong optical absorption in the blue light region, due to the charge transfer transition between O2− and Tb4+. As a result, the sample color became yellow, which is the complementary color of blue, and the color became more vivid with increasing Tb4+ content in the single-phase region. Among the samples, Na2Zr0.82Tb0.18O3 was the optimal composition, with the highest yellowness (b* = +67.2) and pure yellow hue (h° = 90.1). Although the b* value was lower than commercial yellow pigments such as BiVO4 and ZrSiO4:Pr, this sample had a purer yellow hue. Since Na2Zr0.82Tb0.18O3 is composed of non-toxic elements, it could be a new environmentally friendly inorganic yellow pigment.