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Non-ammonolysis synthesis and characterisation of environmentally benign yellow pigments based on calcium-tantalum perovskite oxynitrides
| Title: | Non-ammonolysis synthesis and characterisation of environmentally benign yellow pigments based on calcium-tantalum perovskite oxynitrides |
| Authors: | Sakata, Takuya Browse this author | | Urushidani, Sohta Browse this author | | Tarutani, Naoki Browse this author | | Katagiri, Kiyofumi Browse this author | | Inumaru, Kei Browse this author | | Koyama, Kyohei Browse this author | | Iwata, Nozomu Browse this author | | Masubuchi, Yuji Browse this author →KAKEN DB |
| Issue Date: | 22-Jun-2022 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Materials Advances |
| Volume: | 3 |
| Issue: | 12 |
| Start Page: | 4899 |
| End Page: | 4907 |
| Publisher DOI: | 10.1039/d2ma00378c |
| Abstract: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86113 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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