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Enhancement of electrocatalytic abilities for reducing carbon dioxide: functionalization with a redox-active ligand-coordinated metal complex

Authors :
Mohammad Rasel Mian
Brian K. Breedlove
Goulven Cosquer
Ahmed Fetoh
Santivongskul Piangrawee
Masahiro Yamashita
Habib Md. Ahsan
Source :
Dalton Transactions. 47:11313-11316
Publication Year :
2018
Publisher :
Royal Society of Chemistry (RSC), 2018.

Abstract

A binary system consisting of a ditopic planar pseudo-pincer ligand (qlca = quinoline-2-carbaldehyde (pyridine-2-carbonyl) hydrazone) coordinated to two metal centres affording [{Ru(bpy)2}(μ-qlca)NiCl2]Cl·4H2O·CH3OH (2) (bpy = 2,2'-bipyridine) is reported. The Ni2+ moiety acts as the electrocatalytic active site for CO2 reduction to CO. The turnover frequency (TOF) increased from 0.83 s-1 for [Ni(qlca)Cl2] (3) to 120 s-1 for 2, and the overpotential is 350 mV less than that for 3 due to the electronic influence of the {Ru(bpy)2}2+ moiety on the catalytic active site.

Details

ISSN :
14779234 and 14779226
Volume :
47
Database :
OpenAIRE
Journal :
Dalton Transactions
Accession number :
edsair.doi.dedup.....a1c1a9b2f9e8637c4ea2741828794519
Full Text :
https://doi.org/10.1039/c8dt02288g