CoP₂O₆-Assisted Copper/Carbon Catalyst for Electrocatalytic Reduction of CO₂ to Formate

Abstract

Reducing CO2 into value-added chemicals and fuels by electrochemical reduction of CO2 (CO2ER) in an aqueous medium is considered a potential way to store intermittent renewable energy and alleviate the energy crisis. Cu-based catalysts are a common electrocatalyst used in CO2ER. However, selectivity has always been a difficult problem to solve, especially in terms of the production of C1 products. Based on the characteristics of the carbon framework and the CoP2O6 species, herein, Cu and CoP2O6 co-anchored N-doped hollow carbon spheres (CoP2O6/HCS-Cu) with a precisely controllable copper content were prepared, in order to produce formate with a high current density and Faraday efficiency from CO2ER. The ratio of copper to cobalt has a strong influence on the catalytic performance of the catalyst. In addition, the experimental results and density functional theory calculations show that CoP2O6 is an important factor in promoting the formation of formate.

Boosting 5-Hydroxymethylfurfural Electrooxidation by Porous Biochar via Loading Numerous Surface-Exposed Cobalt Phosphonates

“…With the advantages of low cost, abundant earth resources, and easy synthesis, transition-metal compounds, such as transition-metal oxides, , nitrides, sulfides, , and phosphides, also showed moderate to excellent electrocatalytic oxidation activities, making them promising candidates as electrocatalysts for the utilization of biomass. Cobalt-based materials had gained significance for their promising electrooxidation activity at moderate overpotentials, as well as their contribution to understanding the structural and functional properties during HMF-EOR and OER. − Therefore, numerous high-performance Co-based catalysts have been designed and well prepared. For example, the CoP-CoOOH heterostructure catalyst designed by Wang et al exhibited excellent HMF-EOR activity.…”

Bilayer Porous Electrocatalysts for Stable and Selective Electrochemical Reduction of CO2 to Formate in the Presence of Flue Gas Containing NO and SO2

“…Numerous studies have been carried out on Cu and its derivatives, including oxides, , alloys, different Cu substrates, , Cu/carbon-based materials, , and Cu used with molecular catalysts, , with the aim of enhancing CO 2 reduction activity and adjusting product selectivity. Sujet et al prepared a Cu nanofoam structure on Cu foil and observed CO 2 reduction at more positive potential compared to smooth Cu foil, with a maximum faradaic efficiency (FE) of 37% for formate achieved at −1.5 V vs Ag/AgCl.…”

Highly selective electrocatalytic reduction of CO2 to ethane over a petal-like Zn(OH)2/Cu2+1O/Cu foam catalyst at low overpotentials

“…Rapid industrialization and economic growth have led to extensive consumption of fossil energies and significant CO 2 emission, contributing to global warming and severe climate issues. 1–3 Developing renewable energies and reducing CO 2 emissions are crucial for mitigating the greenhouse effect and advancing carbon neutrality. 4–6 Encouraging the development of new clean energy sources is essential to decrease reliance on fossil fuels and minimize their environmental impact.…”