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Title: Electroreduction of CO 2 Catalyzed by a Heterogenized Zn–Porphyrin Complex with a Redox-Innocent Metal Center

Journal Article · · ACS Central Science
 [1];  [1];  [1];  [2];  [3];  [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States; Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
  2. School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
  3. Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States

Transition-metal-based molecular complexes are a class of catalyst materials for electrochemical CO2 reduction to CO that can be rationally designed to deliver high catalytic performance. One common mechanistic feature of these electrocatalysts developed thus far is an electrogenerated reduced metal center associated with catalytic CO2 reduction. Here we report a heterogenized zinc–porphyrin complex (zinc(II) 5,10,15,20-tetramesitylporphyrin) as an electrocatalyst that delivers a turnover frequency as high as 14.4 site–1 s–1 and a Faradaic efficiency as high as 95% for CO2 electroreduction to CO at -1.7 V vs the standard hydrogen electrode in an organic/water mixed electrolyte. While the Zn center is critical to the observed catalysis, in situ and operando X-ray absorption spectroscopic studies reveal that it is redox-innocent throughout the potential range. Cyclic voltammetry indicates that the porphyrin ligand may act as a redox mediator. Chemical reduction of the zinc–porphyrin complex further confirms that the reduction is ligand-based and the reduced species can react with CO2. This represents the first example of a transition-metal complex for CO2 electroreduction catalysis with its metal center being redox-innocent under working conditions.

Research Organization:
Yale Univ., New Haven, CT (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Science Foundation (NSF); American Chemical Society Petroleum Research Fund; Institute of International Education (IIE); TomKat Foundation; Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division and Advanced Photon Source; Dupont Research and Development, Wilmington, DE (United States). DuPont Experimental Station; Northwestern Univ., Evanston, IL (United States); Oregon State Univ., Corvallis, OR (United States); Netherlands Organization for Scientific Research (NWO)
Grant/Contract Number:
FG02-07ER15909; CHE-1651717; AC02-06CH11357
OSTI ID:
1372709
Alternate ID(s):
OSTI ID: 1423563
Journal Information:
ACS Central Science, Journal Name: ACS Central Science Vol. 3 Journal Issue: 8; ISSN 2374-7943
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 148 works
Citation information provided by
Web of Science

References (41)

Valence Change Ability and Geometrical Occupation of Substitution Cations Determine the Pseudocapacitance of Spinel Ferrite XFe 2 O 4 (X = Mn, Co, Ni, Fe) journal June 2016
Facilitated carbon dioxide reduction using a Zn( ii ) complex journal January 2016
Substituent and axial ligand effects on the electrochemistry of zinc porphyrins journal August 2002
Nickel N-heterocyclic carbene–pyridine complexes that exhibit selectivity for electrocatalytic reduction of carbon dioxide over water journal January 2011
Metal–Organic Frameworks for Electrocatalytic Reduction of Carbon Dioxide journal October 2015
Electrochemical CO 2 Reduction to Hydrocarbons on a Heterogeneous Molecular Cu Catalyst in Aqueous Solution journal June 2016
Molecular Catalysis of Electrochemical Reactions. Mechanistic Aspects journal July 2008
Nanostructured Metallic Electrocatalysts for Carbon Dioxide Reduction journal October 2014
Nanostructured transition metal dichalcogenide electrocatalysts for CO 2 reduction in ionic liquid journal July 2016
Highly selective and active CO2 reduction electrocatalysts based on cobalt phthalocyanine/carbon nanotube hybrid structures journal March 2017
Electrochemical CO2 Reduction on Metal Electrodes book January 2008
Electrochemical CO2 reduction catalyzed by ruthenium complexes [Ru(bpy)2(CO)2]2+ and [Ru(bpy)2(CO)Cl]+. Effect of pH on the formation of CO and HCOO- journal January 1987
Electrochemical Studies of Zinc Tetraphenylporphin journal January 1972
Electrochemical reduction of carbon dioxide catalyzed by [CoI(salophen)Li] journal December 1991
One- and two-electron pathways in the electrocatalytic reduction of CO 2 by fac-Re(bpy)(CO) 3 Cl (bpy = 2,2′-bipyridine) journal January 1985
Electrocatalytic process of CO selectivity in electrochemical reduction of CO2 at metal electrodes in aqueous media journal August 1994
[Mn(bipyridyl)(CO)3Br]: An Abundant Metal Carbonyl Complex as Efficient Electrocatalyst for CO2 Reduction journal September 2011
CO and CO2 hydrogenation study on supported cobalt Fischer–Tropsch synthesis catalysts journal January 2002
A selective and efficient electrocatalyst for carbon dioxide reduction journal January 2014
Current Issues in Molecular Catalysis Illustrated by Iron Porphyrins as Catalysts of the CO 2 -to-CO Electrochemical Conversion journal November 2015
A Local Proton Source Enhances CO 2 Electroreduction to CO by a Molecular Fe Catalyst journal October 2012
Catalysis of the electrochemical reduction of carbon dioxide by iron(“0”) porphyrins journal July 1988
Robust carbon dioxide reduction on molybdenum disulphide edges journal July 2014
Mechanism of Rubisco:  The Carbamate as General Base journal April 1998
PRODUCTION OF CO AND CH 4 IN ELECTROCHEMICAL REDUCTION OF CO 2 AT METAL ELECTRODES IN AQUEOUS HYDROGENCARBONATE SOLUTION journal November 1985
Electrochemistry of iron(I) porphyrins in the presence of carbon monoxide. Comparison with zinc porphyrins journal April 1994
Electroreduction of carbon dioxide on gas-diffusion electrodes modified by metal phthalocyanines journal January 1989
Investigation of the synthesis of ortho-substituted tetraphenylporphyrins journal February 1989
Study of the structure and spectral properties of radical anions of Zn complexes of porphyrins by the method of density functional theory journal February 2009
Facile electrosynthesis of π-extended porphyrins journal January 2014
Tin Oxide Dependence of the CO 2 Reduction Efficiency on Tin Electrodes and Enhanced Activity for Tin/Tin Oxide Thin-Film Catalysts journal January 2012
Electronic Structure of a Formal Iron(0) Porphyrin Complex Relevant to CO 2 Reduction journal April 2017
Highly Efficient, Selective, and Stable CO 2 Electroreduction on a Hexagonal Zn Catalyst journal June 2016
Chemical Redox Agents for Organometallic Chemistry journal January 1996
Electrochemical reduction of CO2 at metal-porphyrin supported gas diffusion electrodes under high pressure CO2 journal June 1999
Nickel(II)-cyclam: an extremely selective electrocatalyst for reduction of CO2 in water journal January 1984
Negative Ions of Porphin Metal Complexes journal March 1963
Covalent organic frameworks comprising cobalt porphyrins for catalytic CO 2 reduction in water journal August 2015
Electrochemical reduction of carbon dioxide mediated by molecular catalysts journal March 1989
Electrons, Photons, Protons and Earth-Abundant Metal Complexes for Molecular Catalysis of CO 2 Reduction journal November 2016
A review of catalysts for the electroreduction of carbon dioxide to produce low-carbon fuels journal January 2014

Figures / Tables (5)