CO2をメタノールに還元するための効率的な単原子銅装飾炭素膜のスケーラブルな生産
Hengpan Yang1, Yu Wu2, Guodong Li2
1Shenzhen Key Laboratory for Functional Polymer, College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , China.
Journal of the American Chemical Society
|July 27, 2019
まとめ
研究者らは,炭素ナノファイバーで新型の銅単原子触媒を開発し,二酸化炭素 (CO2RR) の効率的な電気触媒還元を行いました. この触媒は高価なメタノールを生産し 驚くほど安定性があり CO2の変換に 有望な解決策です
科学分野:
- 材料科学
- 電気化学
- キャタリシス
背景:
- 二酸化炭素 (CO2RR) の電気触媒的削減は,環境問題を緩和するために不可欠です.
- CO2をメタノールのような価値ある製品に変換するための効率的な触媒の開発は依然として大きな課題です.
研究 の 目的:
- 穴を通した炭素ナノファイバー (CuSA/TCNF) に装飾された単一の銅原子を合成し,特徴づけること.
- CO2RRの自立カソッドとしてのCuSA/TCNFの性能を評価する.
- DFT計算によるメタノール生成の仕組みを調査する.
主な方法:
- CuSAs/TCNFsの大規模生産のための簡単な合成戦略
- 液体相におけるCO2RRのためのカトドとしてのCuSAs/TCNFs膜の電気触媒試験.
- 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:
- CuSA/TCNFは優れた機械的性質を示し,直接カソッドとして機能した.
- ほぼ純粋なメタノールが44%のファラダイク効率で生成されました.
- 50時間以上の安定性を持つC1製品の部分電流密度 -93 mA cm-2を達成しました.
- DFTの計算では,Cuの単一の原子が*COの中間物質をメタノールに還元することを好むことが示された.
結論:
- CuSAs/TCNFs膜はCO2RRの非常に効率的で安定した触媒であり,メタノールを生成します.
- 穿孔構造と単一の原子は触媒の性能の鍵です
- この研究は,電気触媒の応用のための高度な単原子触媒の設計のための洞察を提供します.
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