催化作用
氢化酶
材料科学
电化学
双金属片
化学工程
制氢
碳纤维
碳纳米管
共价键
电解
电催化剂
纳米技术
化学
电极
有机化学
复合材料
复合数
物理化学
工程类
电解质
作者
Afridi Zamader,Bertrand Reuillard,Jacques Pécaut,Laurent Billon,Antoine Bousquet,Gustav Berggren,Vincent Artero
标识
DOI:10.1002/chem.202202260
摘要
Surface integration of molecular catalysts inspired from the active sites of hydrogenase enzymes represents a promising route towards developing noble metal-free and sustainable technologies for H2 production. Efficient and stable catalyst anchoring is a key aspect to enable this approach. Herein, we report the preparation and electrochemical characterization of an original diironhexacarbonyl complex including two pyrene groups per catalytic unit in order to allow for its smooth integration, through π-interactions, onto multiwalled carbon nanotube-based electrodes. In this configuration, the grafted catalyst could reach turnover numbers for H2 production (TONH2 ) of up to 4±2×103 within 20 h of bulk electrolysis, operating at neutral pH. Post operando analysis of catalyst functionalized electrodes revealed the degradation of the catalytic unit occurred via loss of the iron carbonyl units, while the anchoring groups and most part of the ligand remained attached onto multiwalled carbon nanotubes.
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