Asset Details
Do you wish to reserve the book?
Fast CO2 hydration kinetics impair heterogeneous but improve enzymatic CO2 reduction catalysis
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Fast CO2 hydration kinetics impair heterogeneous but improve enzymatic CO2 reduction catalysis
Do you wish to request the book?
Fast CO2 hydration kinetics impair heterogeneous but improve enzymatic CO2 reduction catalysis
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Fast CO2 hydration kinetics impair heterogeneous but improve enzymatic CO2 reduction catalysis
2022
Overview
The performance of heterogeneous catalysts for electrocatalytic CO
2
reduction suffers from unwanted side reactions and kinetic inefficiencies at the required large overpotential. However, immobilized CO
2
reduction enzymes—such as formate dehydrogenase—can operate with high turnover and selectivity at a minimal overpotential and are therefore ‘ideal’ model catalysts. Here, through the co-immobilization of carbonic anhydrase, we study the effect of CO
2
hydration on the local environment and performance of a range of disparate CO
2
reduction systems from enzymatic (formate dehydrogenase) to heterogeneous systems. We show that the co-immobilization of carbonic anhydrase increases the kinetics of CO
2
hydration at the electrode. This benefits enzymatic CO
2
reduction—despite the decrease in CO
2
concentration—due to a reduction in local pH change, whereas it is detrimental to heterogeneous catalysis (on Au) because the system is unable to suppress the H
2
evolution side reaction. Understanding the role of CO
2
hydration kinetics within the local environment on the performance of electrocatalyst systems provides important insights for the development of next-generation synthetic CO
2
reduction catalysts.
Carbonic anhydrase enzymatically catalyses CO
2
hydration, and its effect on enzymatic and heterogeneous CO
2
reduction has now been studied. Through the co-immobilization of carbonic anhydrase, it has been shown that faster CO
2
hydration kinetics are beneficial for enzymatic catalysis (using formate dehydrogenase) but detrimental for heterogeneous catalysts, such as gold.
Publisher
Nature Publishing Group UK,Nature Publishing Group
