伝送 電子 顕微鏡 は,金属 オキシード コーティング が 金属 有機 フレームワーク に 積もっ て いる こと を 明らか に し ます
Michael S Denny1, Lucas R Parent1, Joseph P Patterson1,2
1Department of Chemistry and Biochemistry, University of California, San Diego , La Jolla, California 92093, United States.
Journal of the American Chemical Society
|December 23, 2017
まとめ
金属イオン交換による金属有機フレームワーク (MOF) の合成後の改変は困難です. リガンド交換は確認されていますが,金属堆積はMOF@金属酸化物構造を形成します.
科学分野:
- 材料科学
- 化学について
背景:
- メタル・オーガニック・フレームワーク (MOF) の合成後の改造 (PSM) は,その機能性を高めます.
- 以前の研究では,UIO-MOFにおける金属イオンとリガンドの合成後の交換 (PSE) が成功したと報告されていた.
研究 の 目的:
- メタルイオンPSEを UiO-MOFで再評価する.
- UiO-MOFのリガンドPSEを調査する.
- PSM中の金属堆積の性質を理解する.
主な方法:
- 誘導結合プラズマ質量スペクトロメトリー (ICP-MS)
- 構造的および形態的特徴化のための伝送電子顕微鏡 (TEM).
- MOF材料の詳細な分析特性について
主要な成果:
- UiO-MOFの金属イオン堆積はナノスケールの金属酸化物を形成しますが,内部交換された場所ではありません.
- これらのMOFでは,リガンドベースのPSEが確認されています.
- 特徴付けは,MOF@金属酸化物ハイブリッドアーキテクチャを明らかにします.
結論:
- MOFの組成と構造を正確に割り当てるには,厳格な特徴づけが不可欠です.
- UiO-MOFの金属イオンPSEは,表面の金属酸化物の形成につながります.
- リガンドPSEはMOFの改変に有効な経路を提供している.
- MOF@金属酸化物ハイブリッド固体を作るための新しい方法が確立された.
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