有毒な金属を含まない無機的な黄色-赤の色素です
1Max-Planck-Institut fur Festkorperforschung, Stuttgart, Germany. martin@jansen.mpi-stuttgart.mpg.de
Nature
|May 9, 2000
まとめ
新しいペロブスキート色素は,伝統的なカドミウムベースの染料のより安全で高性能な代替品を提供します. これらのカドミウムを含まない無機色素は,高温アプリケーションに優れた安定性と調節可能な色を提供します.
科学分野:
- マテリアルサイエンス 材料科学
- 無機化学 無機化学とは
- ピグメント技術について
背景:
- 非有機色素は,高温で加工される材料の色付け,特にガラス,グラス,セラミックの色付けに不可欠です.
- 現在使われている多くの無機色素は重金属や移行金属を含み,環境や健康にリスクをもたらしており,カドミウムベースの色素はカドミウムの毒性により特に懸念されています.
- 規制により,カドミウム染料の使用がますます制限され,より安全で高性能な代替品の需要が増加しています.
研究 の 目的:
- カドミウムベースのピグメントの代替品として,新しい,無毒な無機性ピグメント候補を特定し,評価する.
- これらの新しい色素の性能特性 (色,安定性,高温環境での適用性など) を評価する.
- 染料の使用によるカドミウム排出量を削減するための実行可能な経路を示す.
主な方法:
- ペロブスキートCaTaO2Nとラタオン2. 2基の固体溶液の合成と特徴づけ
- ペロブスキート固体溶液の組成を調整することによって,ピグメントの色調を調節する.
- 主要な色素特性の評価:輝き,色調の強さ,不透明性,分散性,光耐性,熱安定性.
主要な成果:
- CaTaO2NとLaTaON2の固体溶液は,輝度,色調強度,不透明性,分散性,耐光性,耐熱性に関してカドミウム色素に匹敵する性能を示しています.
- これらのペロブスキート色素の色は,単純な組成的修正を通じて,黄色,オレンジ,赤のスペクトル全体に効果的に調節することができます.
- 開発されたペロブスキートシステムのすべての構成要素は,無害であると特定されています.
結論:
- ペロブスキートベースの無機色素,特にCaTaO2NとLaTaON2の固体溶液は,カドミウムベースの色素よりも有望で本質的に安全な代替品です.
- この新しい色素系は,比較可能な性能と調節可能な色を提供しており,高温アプリケーションにおけるカドミウムフリーソリューションのニーズに対応しています.
- この開発は,環境中のカドミウム排出量を削減し,色素の安全性に関する懸念を緩和するのに寄与します.
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