%0 Journal Article
%A Singh, Ashish
%A Barman, Soumitra
%A Rahimi, Faruk Ahamed
%A Dey, Anupam
%A Jena, Rohan
%A Kumar, Ravi
%A Mathew, Nijita
%A Bhattacharyya, Dibyendu
%A Maji, Tapas Kumar
%T Atomically dispersed Co<sup>2+</sup> in a redox-active COF for electrochemical CO<sub>2</sub> reduction to ethanol: unravelling mechanistic insight through operando studies
%J Energy & environmental science
%V 17
%N 6
%@ 1754-5692
%C Cambridge
%I RSC Publ.
%M PUBDB-2025-01344
%P 2315 - 2325
%D 2024
%X Designing cheap, stable, and efficient electrocatalysts for selective CO<sub>2</sub> reduction to ethanol is a green and sustainable approach for converting the greenhouse gas into value-added products. In this context, developing single-atom-based electrocatalysts (SAEs) could be advantageous because of their maximum atom utilization. Here, we report the design and synthesis of a donor–acceptor-based redox-active covalent organic framework (COF), TAPA-OPE, obtained by condensation between tris-(4-aminophenyl) amine (TAPA) and oligo-(p-phenyleneethynylenes) (OPE) based dialdehyde. Owing to the presence of suitable metal chelating sites, TAPA-OPE was utilized for covalent grafting of atomic Co<sup>2+</sup> (Co-TAPA-OPE), which has been confirmed by EXAFS, HAADF-STEM, and XPS studies. Co-TAPA-OPE acts as a stable SAE for selective reduction of CO<sub>2</sub> to ethanol at −0.67 V vs. RHE. Faradaic efficiency (FE) for the ethanol formation is calculated to be 66.8
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001175941800001
%R 10.1039/D3EE02946H
%U https://bib-pubdb1.desy.de/record/626265