Non-ammonolysis synthesis and characterisation of environmentally benign yellow pigments based on calcium–tantalum perovskite oxynitrides

Materials Advances 3 巻 12 号 4899-4907 頁 2022-05-19 発行
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タイトル ( eng )
Non-ammonolysis synthesis and characterisation of environmentally benign yellow pigments based on calcium–tantalum perovskite oxynitrides
作成者
Sakata Takuya
Urushidani Sohta
Koyama Kyohei
Iwata Nozomu
Masubuchi Yuji
収録物名
Materials Advances
3
12
開始ページ 4899
終了ページ 4907
抄録
Calcium–tantalum-based perovskite oxynitrides were synthesised as candidates for environmentally benign inorganic yellow pigments. The compounds were prepared via a urea-nitriding method, which does not involve a harmful ammonolysis process. Rapid single-phase synthesis was achieved under the optimum conditions, and only removable by-products were generated. Although the colours and bandgap energies of the obtained calcium–tantalum oxynitrides, CaTa(O,N)3, fell short of those of CaTaO2N synthesised by ammonolysis, they were made comparable by doping with La3+. Among the samples synthesised in this study, the most brilliant yellow hue was achieved with Ca0.8La0.2Ta(O,N)3, which has lightness (L*) and yellowness (b*) values comparable to those of conventional inorganic yellow pigments. In this synthetic method, harmful substances are eliminated both from the products and the synthesis process. In addition, the short heat-treatment duration enables the products to be obtained as fine powders suitable for pigment applications. Calcium–tantalum-based perovskite oxynitrides prepared by the strategy developed in this study have potential applications as environmentally benign yellow pigments.
内容記述
This work was supported by JSPS KAKENHI (Grant No.JP16H06439, JP18K19132, JP18H01709, JP19H04699, and JP20H02439).
言語
英語
資源タイプ 学術雑誌論文
出版者
The Royal Society of Chemistry
発行日 2022-05-19
権利情報
© 2022 The Author(s). This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 2633-5409
[DOI] 10.1039/d2ma00378c
[DOI] https://doi.org/10.1039/D2MA00378C