In:
Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 10, No. 42 ( 2022), p. 22718-22729
Abstract:
Co-electrolysis of H 2 O and N/C sources to valuable chemicals has the potential to contribute to global warming mitigation. We here report the electrochemical conversion of H 2 O and CO 2 into methanol in a gas flow system at temperatures between 100 and 200 °C. CO 2 was reduced to methane with voltage-boosted H 2 at a Ru/C cathode. Introduced Fe 2 O 3 nanoparticles promoted the adsorption and activation of CO 2 on the surface of Ru because of their high redox activity. Methane was oxidized to methanol through the formation of ˙CH 3 and active oxygen species at a Pt anode. The addition of Au to the anode enhanced the selectivity toward methanol by reducing the activity of Pt in the complete oxidation of methanol. Combining these processes with gas penetration into the electrolyte membrane enabled the synthesis of methanol from H 2 O and CO 2 , with a maximum faradaic efficiency of 54%. This work establishes a methodology for providing a good balance between the activity and selectivity of electrodes for the CO 2 reduction reaction.
Type of Medium:
Online Resource
ISSN:
2050-7488
,
2050-7496
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702232-8
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