Covalent organic frameworks comprising cobalt porphyrins for catalytic CO 2 reduction in water
Lawrence Berkeley National Laboratory · University of California, Berkeley · +4 more institutions
Abstract
Conversion of carbon dioxide (CO2) to carbon monoxide (CO) and other value-added carbon products is an important challenge for clean energy research. Here we report modular optimization of covalent organic frameworks (COFs), in which the building units are cobalt porphyrin catalysts linked by organic struts through imine bonds, to prepare a catalytic material for aqueous electrochemical reduction of CO2 to CO. The catalysts exhibit high Faradaic efficiency (90%) and turnover numbers (up to 290,000, with initial turnover frequency of 9400 hour(-1)) at pH 7 with an overpotential of -0.55 volts, equivalent to a 26-fold improvement in activity compared with the molecular cobalt complex, with no degradation over 24…
Citation impact
- FWCI
- 58.91
- Percentile
- 100%
- References
- 68
Authors
11- SLSong LinCorresponding
Lawrence Berkeley National Laboratory, University of California, Berkeley
- CSChristian S. DiercksCorresponding
Lawrence Berkeley National Laboratory, University of California, Berkeley
- YZYue‐Biao ZhangCorresponding
Lawrence Berkeley National Laboratory, ShanghaiTech University, University of California, Berkeley
- NKNikolay Kornienko
University of California, Berkeley
- EMEva M. Nichols
Lawrence Berkeley National Laboratory, University of California, Berkeley
Topics & keywords
- Cobalt
- Porphyrin
- Catalysis
- Covalent bond
- Aqueous solution
- Electrochemistry
- Chemistry
- Covalent organic framework
- Industry, innovation and infrastructure