Journal article
Pyridine and Pyridinium Electrochemistry on Polycrystalline Gold Electrodes and Implications for CO2 Reduction
Journal of physical chemistry. C, Vol.119(22), pp.12523-12530
05/15/2015
DOI: 10.1021/acs.jpcc.5b03355
Abstract
We examine the electrochemical behavior of pyridine (py) and pyridinium ion (pyrH+) on gold electrodes in inert nitrogen (N2) and carbon dioxide (CO2) environments to evaluate potential catalytic roles of nitrogen heterocycles in electrochemical CO2 reduction. Analysis of the pyridine and pyridinium systems shows that gold electrodes exhibit unique pyrH+ and CO2 electrochemistry compared with previous work on platinum electrodes or photoelectrode systems. Specifically, analysis of the data shows specific adsorption of pyridine/pyridinium, an irreversible reduction wave at −1.0 V vs Ag/AgCl associated with the one-electron reduction of pyridinium, and an enhanced reductive current when CO2 and pyrH+ are included together in the aqueous solution. Our results show no evidence to support formation of carbon-containing reduction products and implicate CO2 as a possible weak acid catalyst for production of dihydrogen.
Details
- Title: Subtitle
- Pyridine and Pyridinium Electrochemistry on Polycrystalline Gold Electrodes and Implications for CO2 Reduction
- Creators
- Anthony J LucioScott K Shaw
- Resource Type
- Journal article
- Publication Details
- Journal of physical chemistry. C, Vol.119(22), pp.12523-12530
- DOI
- 10.1021/acs.jpcc.5b03355
- NLM abbreviation
- J Phys Chem C Nanomater Interfaces
- ISSN
- 1932-7447
- eISSN
- 1932-7455
- Publisher
- American Chemical Society
- Grant note
- name: Sloan Center for Exemplary Mentoring, University of Iowa; DOI: 10.13039/100009228, name: Iowa Energy Center, award: OG-15-002
- Language
- English
- Date published
- 05/15/2015
- Academic Unit
- Chemistry
- Record Identifier
- 9983985988702771
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