Details

Autor(en) / Beteiligte

• Zhao, Yue
• Wang, Shan
• Zhu, Lin‐Jun
• Sun, Meng‐Jiao
• Zhang, Teng
• Cao, Rong

Titel

A Graphene‐Supported Copper Complex as Site‐Isolated Catalyst for Electrochemical CO2 Reduction

Ist Teil von

• ChemElectroChem, 2022-04, Vol.9 (8), p.n/a

Ort / Verlag

Weinheim: John Wiley & Sons, Inc

Erscheinungsjahr

2022

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• The electrochemical reduction of CO2 has been recognized as one of the best strategies to reduce atmospheric CO2 levels and achieve a carbon‐neutral economy. We report here a copper complex, Cu(salan)2, as an efficient CO2 reduction catalyst in basic aqueous media. Cu(salan)2 exhibited different catalytic behaviors in nanocrystalline and graphene‐supported forms. As nanocrystals, the complex did not show high catalytic activity and gradually decomposed into Cu2O upon electrolysis. However, when dispersed on a graphene matrix, Cu(salan)2 exhibited a moderate‐to‐high CO selectivity and remained stable in long‐term electrolysis. This work shows that site‐isolation by dispersion of a molecular catalyst is an effective way to increase the catalyst stability and tune the product selectivity for CO2RR electrocatalysis. Cu(salan)2 exhibits better stability and activity, as well as a different selectivity towards the electrocatalytic reduction of CO2, when the site‐isolated form is used instead of the nanocrystalline form. Site isolation by dispersion of a molecular catalyst on the graphene matrix is an effective way to increase the catalyst stability and tune the product selectivity for electrocatalysis.