Impurity doping effects and ecological friendly synthesis of cerium sulfide powders for enhanced chromaticity and color tunability
Impurity doping effects and ecological friendly synthesis of cerium sulfide powders for enhanced chromaticity and color tunability
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硫化铈粉末的杂质掺杂效应和生态友好合成可增强色度和颜色可调性
DOI：
10.1016/j.ceramint.2023.08.112
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发表时间：
2023
影响因子：
5.2
通讯作者：
Shiqing Xu
中科院分区：
文献类型：
--
作者：
Hongbin Zhang;Gongxun Bai;Le Wang;M. Cai;Renguang Ye;Junjie Zhang;Shiqing Xu
红色无毒环保的γ相硫化铈粉体在涂料、户外显示、智能建筑等领域有着广阔的应用前景。然而，开发一种环保的制备工艺和提高硫化铈粉末的生产效率仍然是主要的挑战。本研究通过在铈前驱体中加入硫氰酸铵，制备了具有优异颜色性能的环保型γ- ce2s3粉末。通过化学和物理方法研究了不同量的杂质（主要是Ce2O2S）对硫化铈粉末光谱性质的影响。此外，结合详细的实验特征和密度泛函理论计算，研究了杂质掺杂对反应合成的意义。结果表明，杂质含量的降低可以大大提高γ- ce2s3的色度值，使颜色由暗红色变为鲜红色。
Red non-toxic and environmentally friendlyγ-phase cerium sulfide powders have promising applications in the fields of coatings, outdoor displays and smart buildings. However, the development of an environmentally friendly preparation process and the improvement of production efficiency of cerium sulfide powders remain major challenges. In this study, eco-friendlyγ-Ce2S3powders with excellent color properties have been produced by adding ammonium thiocyanate to the precursor of cerium without H2S or CS2. The effect of impurities (mainly Ce2O2S) with different amounts on spectral properties of cerium sulfide powders has been studied through chemical and physical methods. In addition, the significance of impurity doping on the reaction synthesis was studied by combining detailed experimental characteristics with density functional theory calculations. The results show that the reduction of impurity content can greatly improve the chromaticity value ofγ-Ce2S3and change color from dark red to bright red.