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- W2912288803 abstract "Molecular complexes with inexpensive transition-metal centers have drawn extensive attention, as they show a high selectivity in the electrochemical conversion of CO2 to CO. In this work, we propose a new strategy to covalently graft cobalt porphyrin onto the surface of a carbon nanotube by a substitution reaction at the metal center. Material characterization and electrochemical studies reveal that the porphyrin molecules are well dispersed at a high loading of 10 wt. %. As a result, the turnover frequency for CO formation is improved by a factor of three compared to traditional physically-mixed catalysts with the same cobalt content. This leads to an outstanding overall current density of 25.1 mA cm-2 and a Faradaic efficiency of 98.3 % at 490 mV overpotential with excellent long-term stability. This work provides an effective pathway for the improvement of the performance of electrocatalysts that could inspire rational design of molecular catalysts in the future." @default.
- W2912288803 created "2019-02-21" @default.
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- W2912288803 date "2019-05-13" @default.
- W2912288803 modified "2023-10-11" @default.
- W2912288803 title "Covalently Grafting Cobalt Porphyrin onto Carbon Nanotubes for Efficient CO <sub>2</sub> Electroreduction" @default.
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- W2912288803 doi "https://doi.org/10.1002/anie.201900499" @default.
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