Premium
Functionalization of Carbon Nanotubes with Nickel Cyclam for the Electrochemical Reduction of CO 2
Author(s) -
Pugliese Silvia,
Huan Ngoc Tran,
Forte Jérémy,
Grammatico Domenico,
Zanna Sandrine,
Su BaoLian,
Li Yun,
Fontecave Marc
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202002092
Subject(s) - cyclam , carbon nanotube , electrocatalyst , catalysis , electrochemistry , electrolysis , nickel , chemistry , inorganic chemistry , surface modification , moiety , electrode , carbon fibers , combinatorial chemistry , chemical engineering , materials science , organic chemistry , nanotechnology , metal , composite material , engineering , composite number , electrolyte
The exploitation of molecular catalysts for CO 2 electrolysis requires their immobilization on the cathode of the electrolyzer. As an illustration of this approach, a Ni‐cyclam complex with a cyclam derivative functionalized with a pyrene moiety is synthesized, found to be a selective catalyst for CO 2 electroreduction to CO, and immobilized on a carbon nanotube‐coated gas diffusion electrode by using a noncovalent binding strategy. The as‐prepared electrode is efficient, selective, and robust for electrocatalytic reduction of CO 2 to CO. Very high turnover numbers (ca. 61460) and turnover frequencies (ca. 4.27 s −1 ) are enabled by the novel electrode material in organic solvent‐water mixtures saturated with CO 2 . This material provides an interesting platform for further improvement.