Manganese(I) Diamine Electrocatalysts: Electrochemical Carbon Dioxide Reduction to Carbon Monoxide

Autor:	Badrinath Dhakal, Brooke A. Corbin, Alberto Sosa Parada, Jonathan G. Sakai, Emily A. Felton, Lauren T. McDonald, Anthony J. Gross, Gary S. Nichol, Greg A. N. Felton
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	CO2 reduction electrocatalyst diamine manganese compounds CO formation Inorganic chemistry QD146-197
Zdroj:	Inorganics, Vol 11, Iss 9, p 374 (2023)
Druh dokumentu:	article
ISSN:	2304-6740
DOI:	10.3390/inorganics11090374
Popis:	Novel organometallic complexes Mn(benzene-1,2-diamine)(CO)3Br, Mn-1, Mn(3-methylbenzene-1,2-diamine)(CO)3Br, Mn-2, and Re(benzene-1,2-diamine)(CO)3Cl, Re-1, have been synthesized and characterized by IR, UV/Vis, 1H-NMR, EA and HRMS. The structures of Mn-2 and Re-1 were confirmed by X-ray crystallography. The three novel compounds were studied for their electrocatalytic reduction of carbon dioxide to carbon monoxide using cyclic voltammetry in acetonitrile solutions. Controlled potential electrolysis was used to obtain information on faradaic yield, with product formation being confirmed by GC. Using earth-abundant manganese, compounds Mn-1 and Mn-2 display turnover frequencies of 108 s−1 and 82 s−1, respectively, amid selective production of carbon monoxide (faradaic yields ~85%), with minimal co-production of dihydrogen (Re-1, displays no activity as an electrocatalyst for carbon dioxide reduction under identical conditions.
Databáze:	Directory of Open Access Journals
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