メタル・オーガニック・フレームワーク 六角ナノプレート:ボトムアップ合成,トポタクシー変換,効率的な酸素進化反応
1Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan 450001, People's Republic of China.
Journal of the American Chemical Society
|April 7, 2020
まとめ
研究者らは,トポロジーによるアプローチを使用して,新しい六角形の2D金属有機フレームワーク (MOF) を合成した. これらのMOFは,効率的な酸素進化反応のために,N-ドーピングされたNi@炭素電気触媒に変換された.
科学分野:
- 材料科学
- ナノテクノロジー
- カタリシス
背景:
- 2次元金属有機フレームワーク (2D MOF) は,高度なアプリケーションにチューニング可能な特性を提供します.
- 2D MOFの形態を制御することは,その性能を最適化するために不可欠です.
- 構造的トポロジーを用いたボトムアップ合成により,MOFアーキテクチャを正確に制御できます.
研究 の 目的:
- 新しい六角 2D MOF ナノプレートのためのトポロジー主導のボトムアップ合成を開発する.
- MOFの形態学に対するピリジンの影響を調査する.
- 合成されたMOFからN-ドーピングされたNi@carbon電触媒を酸素進化反応のために作る.
主な方法:
- テンプレートとして歪んだ (3,4) 接続された Ni2 ((BDC) 2 ((DABCO) フレームワークを使用した.
- 形質を調節するためにピリジンを含む置換抑制プロセスを採用した.
- MOFナノプレートをN-ドーピングされたNi@炭素電解剤に変換するための熱分解処理を行いました.
主要な成果:
- 制御可能な厚さを持つ六角形2DMOFナノプレートを合成しました.
- ナノ棒からナノディスクとナノプレートへの形態の変化を証明した.
- N-ドーピングされたNi@炭素触媒を使用して,酸素進化反応のために10 mA cm-2で307 mVの低過剰電位を達成しました.
結論:
- トポロジー・ガイデッド・ボトムアップ・シンセシスは,特定の形態を持つ2D MOFを作成するのに有効です.
- ピリジンはMOFのナノ構造を制御する上で重要な役割を果たします.
- その結果,N-ドーピングされたNi@炭素電触媒は,酸素進化反応の有望な性能を示しています.
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