期刊
ACS ENERGY LETTERS
卷 4, 期 3, 页码 666-672出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.8b02355
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资金
- ARC Centre of Excellence Scheme [CE140100012]
- University of Wollongong (UoW)
- Australian Research Council [FL120100019]
- UoW Electron Microscopy Centre
- Australian Research Council [FL120100019] Funding Source: Australian Research Council
Electrochemical conversion of CO2 into CO using metal complex/carbon-based heterogenized hybrids can be both highly efficient and selective. The ways in which the molecular complexes are immobilized on the carbon substrates and participate in the electrocatalytic reactions that yield CO2 reduction are not always well-understood. In this work, a highly soluble and sterically hindered cobalt(II) octaalkoxyphthalocyanine was successfully immobilized on chemically converted graphene via pi-pi stacking. In comparison to an analogous cobalt phthalocyanine/graphene catalyst, the alkoxy substitutions helped to suppress the phthalocyanine aggregation on the graphene sheets, resulting in a significantly enhanced catalytic activity by a single phthalocyanine molecule (similar to 5 s(-1) at 480 mV overpotential) with stable CO conversion over 30 h of electrolysis.
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