Work

Deposited Thin-Film Nanoelectrocatalysts of Non-Noble Metals for Co-Capture of CO2 and Reduction of Nitrates

Year: 2025

Type: conference-paper

Abstract: The co-electrolysis of nitrate and CO2 can contribute to urea production with low carbon-oxide emission rate and at the same time reduce NO3− to extremely low permissible concentrations. It was found that Ag and Fe particles, as thin catalytic layers, can potentially be used for the joint reduction of NO3− and CO2 under benign ambient conditions. The linear voltammetry, chronoamperometry, electrochemical impedance spectroscopy, and electron scanning microscopy were used. The Fe/C electrocatalyst exhibits superior current density stability at −1.2 V vs. Ag/AgCl, whereas Ag/C electrocatalyst shows noticeable degradation over time. This reaction is necessary both for the removal of nitrates from wastewater and for the capture of carbon dioxide, which makes it one of the important applications of sustainable chemistry.

DOI: 10.3390/engproc2025105006

Authors: Irina Kuznetsova, Marina Timina, Dmitry Kultin, Olga Lebedeva, Pavel Nesterenko, Leonid Kustov

Institutions: Lomonosov Moscow State University, Russian Academy of Sciences, N.D. Zelinsky Institute of Organic Chemistry

Language: English

Topic: CO2 Reduction Techniques and Catalysts

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production, Climate action, Affordable and clean energy

Open Access status: gold

Funder: Russian Science Foundation

Award: G1957990529