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Efficient Electrochemical Reduction of CO 2 on g-C 3 N 4 Monolayer-supported Metal Trimer Catalysts: A DFT Study
Ist Teil von
Chemistry, an Asian journal, 2023-02, Vol.18 (4), p.e202201232
Ort / Verlag
Germany
Erscheinungsjahr
2023
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The electrochemical reduction of CO
into valuable chemicals and fuels is a promising but challenging method to realize the carbon cycle. In this work, a series of transition metal trimer clusters supported on g-C
N
catalysts (M
@g-C
N
, M=Cr, Mn, Fe, Co, Ni, Cu, and Ru) for electrochemical CO
reduction (CO
RR) toward C
and C
products were systemically studied using density functional theory (DFT) calculations. Our results show that CO
could be adsorbed and activated effectively on M
@g-C
N
from adsorption configurations and electronic structures analyses. Cu
@g-C
N
is a promising electrocatalyst for CH
production with a limiting potential of -0.42 V. Cr
@g-C
N
, Fe
@g-C
N
, and Co
@g-C
N
produce a low limiting potential of -0.64 V, -0.45 V, and -0.64 V for C
H
production, respectively. Hydrogen evolution reaction is refrained on Cu
@g-C
N
, Cr
@g-C
N
, and Co
@ g-C
N
. This work provides useful insights into transition metal trimer cluster catalysts with enhanced activity and selectivity in CO
RR.