Walsh, James J, Smith, Charlotte L, Neri, Gaia 
ORCID: 0000-0003-1326-9327, Whitehead, George FS, Robertson, Craig M ORCID: 0000-0002-4789-7607 and Cowan, Alexander J ORCID: 0000-0001-9032-3548
(2015)
Improving the efficiency of electrochemical CO<sub>2</sub> reduction using immobilized manganese complexes.
FARADAY DISCUSSIONS, 183.
pp. 147-160.
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Abstract
Immobilization of [Mn(bpy)(CO)3Br], (1) and [Mn(bpy((t)Bu)2)(CO)3Br] (2, where (bpy((t)Bu)2) = 4,4'-di-tert-butyl-2,2'-bipyridine) in Nafion/multi-walled carbon nanotubes (MWCNT) on glassy carbon yielded highly active electrodes for the reduction of CO2 to CO in aqueous solutions at pH 7. Films incorporating have significantly improved selectivity towards CO2, with CO : H2 ∼ 1 at -1.4 V vs. SCE, exceeding that for the previously reported /MWCNT/Nafion electrode. Furthermore, we report the synthesis and subsequent electrochemical characterization of two new substituted Mn(i) bipyridine complexes, [Mn(bpy(COOH)2)(CO)3Br] (3) and [Mn(bpy(OH)2)(CO)3Br] (4) (where (bpy(COOH)2) = 4,4'-di-carboxy-2,2'-bipyridine and (bpy(OH)2) = 4,4'-di-hydroxy-2,2'-bipyridine). Both 3 and 4 were found to have some activity towards CO2 in acetonitrile solutions; however once immobilized in Nafion membranes CO2 reduction was found to not occur at significant levels.
| Item Type: | Article |
|---|---|
| Subjects: | ?? QD ?? |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 11 Jun 2015 14:57 |
| Last Modified: | 05 Oct 2023 08:56 |
| DOI: | 10.1039/c5fd00071h |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/2013527 |
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