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Table 1 Representative reaction pathways of CO2RR in neutral pH buffer electrolyte condition with thermodynamic standard potentials

From: Heterogeneous catalysts for catalytic CO2 conversion into value-added chemicals

  Reaction in neutral pH buffer electrolyte E0 (V vs RHE)
Cathode reaction (CO2RR) CO2 + H2O + 2e → CO + 2OH − 0.10
(CO2RR) CO2 + 2H2O + 2e → HCOOH +2OH − 0.02
(CO2RR) CO2 + 5H2O + 6e → CH3OH + 6OH 0.03
(CO2RR) CO2 + 6H2O + 8e → CH4 + 8OH 0.17
(CO2RR) 2CO2 + 8H2O + 12e → C2H4 + 12OH 0.08
(HER) 2H2O + 2e → H2 + 2OH 0
Anode reaction (OER) 2H2O → O2 + 4H+ + 4e 1.229