scholarly journals Physicochemical Peculiarities of Iron Porphyrin - Containing Electrodes in Catalase - and Peroxidase - Type Biomimetic Sensors

10.5772/13616 ◽  
2011 ◽  
Author(s):  
T. M. Nagiev
Keyword(s):  
Iron Porphyrin

An NADH-Inspired Redox Mediator Strategy to Promote Second-Sphere Electron and Proton Transfer for Cooperative Electrochemical CO2 Reduction Catalyzed by Iron Porphyrin

2020 ◽  
Author(s):  
Peter T. Smith ◽  
Sophia Weng ◽  
Christopher Chang
Keyword(s):  
Proton Transfer ◽  
Co2 Reduction ◽  
Iron Porphyrin ◽  
Redox Mediators ◽  
Reservoir Properties ◽  
Proton Reduction ◽  
Electrochemical Co2 Reduction ◽  
Starting Point ◽  
Rate Improvement ◽  
Molecular Catalysts

We present a bioinspired strategy for enhancing electrochemical carbon dioxide reduction catalysis by cooperative use of base-metal molecular catalysts with intermolecular second-sphere redox mediators that facilitate both electron and proton transfer. Functional synthetic mimics of the biological redox cofactor NADH, which are electrochemically stable and are capable of mediating both electron and proton transfer, can enhance the activity of an iron porphyrin catalyst for electrochemical reduction of CO<sub>2</sub> to CO, achieving a 13-fold rate improvement without altering the intrinsic high selectivity of this catalyst platform for CO<sub>2</sub> versus proton reduction. Evaluation of a systematic series of NADH analogs and redox-inactive control additives with varying proton and electron reservoir properties reveals that both electron and proton transfer contribute to the observed catalytic enhancements. This work establishes that second-sphere dual control of electron and proton inventories is a viable design strategy for developing more effective electrocatalysts for CO<sub>2</sub> reduction, providing a starting point for broader applications of this approach to other multi-electron, multi-proton transformations.

Aliphatic hydroxylation catalyzed by iron porphyrin complexes

1983 ◽  
Vol 105 (20) ◽  
pp. 6243-6248 ◽  
Author(s):  
John T. Groves ◽  
Thomas E. Nemo
Keyword(s):  
Iron Porphyrin ◽  
Iron Porphyrin Complexes

Effects of Appended Poly(ethylene glycol) on Electrochemical CO2 Reduction by an Iron Porphyrin Complex

2021 ◽  
Vol 60 (6) ◽  
pp. 3843-3850
Author(s):  
Ashwin Chaturvedi ◽  
Caroline K. Williams ◽  
Nilakshi Devi ◽  
Jianbing “Jimmy” Jiang
Keyword(s):  
Ethylene Glycol ◽  
Co2 Reduction ◽  
Iron Porphyrin ◽  
Poly Ethylene Glycol ◽  
Porphyrin Complex ◽  
Electrochemical Co2 Reduction ◽  
Poly Ethylene

Redox cycling in the activation of peroxides by iron porphyrin and manganese complexes. ‘Catching’ catalytic active intermediates

2016 ◽  
Vol 306 ◽  
pp. 483-509 ◽  
Author(s):  
Maria Oszajca ◽  
Alicja Franke ◽  
Małgorzata Brindell ◽  
Grażyna Stochel ◽  
Rudi van Eldik
Keyword(s):  
Redox Cycling ◽  
Manganese Complexes ◽  
Iron Porphyrin ◽  
Active Intermediates
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