Year: 2024
Type: article
Abstract: The electrochemical carbon dioxide reduction reaction (eCO 2 RR) using nitrogen‐doped carbon (N–C) materials offers a promising and cost‐effective approach to global carbon neutrality. Regulating the porosity of N–C materials can potentially increase the catalytic performance by suppressing the concurrence of the hydrogen evolution reaction (HER). However, the augmentation of porosity usually alters the active sites or the chemical composition of catalysts, resulting in intertwined influences of various structural factors and catalytic performance. In this study, incorporating secondary carbon sources into the metal‐organic framework (MOF) precursor through nanocasting aimed to selectively enhance the mesoporous structure, allowing for deciphering this effect from other changes in the catalyst composition. Consequently, the developed N–C catalyst exhibited a significant surface area with abundant mesopores, leading to a maximum Faradaic efficiency (FE) for carbon monoxide (CO) of 95% at −0.50 V versus the reversible hydrogen electrode (vs. RHE). Furthermore, the FE for CO is enhanced across a wide potential range, surpassing previously reported metal‐free N–C eCO 2 RR catalysts. The investigation reveals that constructing mesoporous structures can induce excellent CO 2 catalysis by enhancing the accessibility of active sites while establishing an elevated local pH at these sites.
Source: Small
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: bronze
Funders: Centres de Recerca de Catalunya, Institut Català de Nanociència i Nanotecnologia, European Commission, Cardiff University, Generalitat de Catalunya, Novo Nordisk, Novo Nordisk Fonden, European Regional Development Fund, Agencia Estatal de Investigación, HORIZON EUROPE Marie Sklodowska-Curie Actions
Awards: G1059279500, G1175115578, G120905174, G1272927172, G1425294836, G1622782223, G2064873908, G210041235, G2262748287, G2573345890, G2601397997, G2988934680, G3005324705, G300979063, G34346518, G3480869486, G348919436, G3511574013, G354764522, G357246561, G3681454997, G3904643641, G4042783231, G410571670, G425668148, G451917667, G5080475149, G5195188938, G531036588, G5376584569, G5539308778, G5967599077, G6605876378, G6656126374, G6762955466, Combining catalyst design and electrode reconstruction for industry compatible CO2 electrolysis, G69051668, G7084143925, G7164452428, Highly Ethanol-Selective Electrocatalytic CO2 Reduction Enabled by Site-Specific Heteroatoms Doped Single Atom Catalysts Supported Cu Clusters, G8321366781, G8637226926, G929308097
OpenAlex ID: W4404617967