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Electrocatalytic reduction of CO2 with N/B co-doped reduced graphene oxide based catalysts
María Isabel Cerrillo,Carlos Jiménez,Miguel Ángel Ortiz,Rafael Camarillo,Jesusa Rincón,Fabiola Martínez 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.127 No.-
Metal based materials are frequently used in electrocatalytic processes for the mitigation ofCO2 emissions, increasing the cost of the technology and the toxicity of the material. Metal-free catalystsappear as an interesting alternative. This work focusses on the synthesis of nitrogen and boron dopedreduced graphene oxide (rGO) for the electrocatalytic reduction of CO2 in gas phase in continuous operationmode in a PEM type cell. The main reaction products observed have been formic acid and CO, beingthe first one mainly formed. Results obtained with rGONB have been compared with the undoped rGOand with copper-based catalysts (Cu/rGO and Cu/rGONB). The non-metal doped material (rGONB) ismuch more active in the CO2 electrocatalytic reduction as compared with the undoped material (rGO). The catalytic activity of rGONB is very similar to those obtained with Cu/rGO and Cu/rGONB catalysts,pointing out rGONB as a very promising material for the electrocatalytic reduction of CO2. This is especiallyrelevant considering that rGONB has been tested in a relatively high geometric area (comparedwith most works in literature), in gas phase and in continuous operation mode, which is an importantstep to carry out the further scale-up of the process for industrial applications.
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