水素進化のための新種の分子電解剤:M3N@C2 (2n=68,78,および80) の触媒活性
Alain R Puente Santiago1, Mohamed Fathi Sanad1,2, Antonio Moreno-Vicente3
1Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States.
Journal of the American Chemical Society
|April 6, 2021
まとめ
この研究は,水素進化反応 (HER) のためのエンドヘッダールフルレンを調査する. Sc3N@D3(6140) -C68は優れた触媒活性と安定性を示し,有望なモチーフとして溶融ペンタゴンリングを強調した.
科学分野:
- 材料科学
- 電気化学
- ナノテクノロジー
背景:
- エンドオヘドラルフルレンは,水素進化反応 (HER) の予測された電気触媒特性を持つ0Dナノ材料である.
- 現実的な電気化学環境での性能の実験的検証は欠けている.
研究 の 目的:
- 7つのM3N@2nフルレンのHER電気触媒的振る舞いを実験的に評価する.
- 水素生成のための最も効果的なフルレンの構造を特定する.
- 優れた触媒活性に起因する構造的特徴を明らかにする.
主な方法:
- M3N@2nフルレンの合成と特徴付け (2n = 68,78,80).
- 発現ポテンシャル,質量活動,安定性試験を含む電気化学測定
- 触媒メカニズムを理解するための密度関数理論 (DFT) の計算.
主要な成果:
- 非IPR Sc3N@D3(6140) -C68は最高のHERパフォーマンスを示した.
- RHEと比較して -38mVの発生電位と,RHEと比較して -0.4Vで1.75A·mg-1の質量活動を達成した.
- 24時間後に96%の電流を維持し,優れた電気化学的安定性を示しました.
結論:
- Sc3N@D3(6140) -C68は,HERにとって非常に有望な電気触媒である.
- フルレンの溶融ペンタゴンリングは,水素生成のための新しい効果的な触媒モチーフを表しています.
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