Selective and Efficient Reduction of Carbon Dioxide to Carbon Monoxide on Oxide-Derived Nanostructured Silver Electrocatalysts

Journal article (2016)

Authors

M. Ma ChemE/Materials for Energy Conversion and Storage - , China University of Petroleum (East China)

B.J. Trzesniewski ChemE/Materials for Energy Conversion and Storage -

Jie Xie Eindhoven University of Technology

W.A. Smith ChemE/Materials for Energy Conversion and Storage -

Research Group

ChemE/Materials for Energy Conversion and Storage () (TU Delft)

Electrocatalysis Heterogeneous catalysis Carbon dioxide Surface chemistry Conversion of carbon dioxide

More Info

expand_more

To reference this document use:

http://resolver.tudelft.nl/uuid:363e4ed6-bb21-4642-9e1a-4474a1801469

Published Date

2016

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Applied Sciences

Department

ChemE/Chemical Engineering

Research Group

ChemE/Materials for Energy Conversion and Storage

Abstract

In this work, the selective electrocatalytic reduction of carbon dioxide to carbon monoxide on oxide-derived silver electrocatalysts is presented. By a simple synthesis technique, the overall high faradaic efficiency for CO production on the oxide-derived Ag was shifted by more than 400 mV towards a lower overpotential compared to that of untreated Ag. Notably, the Ag resulting from Ag oxide is capable of electrochemically reducing CO2to CO with approximately 80 % catalytic selectivity at a moderate overpotential of 0.49 V, which is much higher than that (ca. 4 %) of untreated Ag under identical conditions. Electrokinetic studies show that the improved catalytic activity is ascribed to the enhanced stabilization of COOH.intermediate. Furthermore, highly nanostructured Ag is likely able to create a high local pH near the catalyst surface, which may also facilitate the catalytic activity for the reduction of CO2with suppressed H2evolution.