Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 27, Issue 27, Pages 7502-7506Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202100249
Keywords
Co3O4 electrocatalyst; dihydroisoquinolines; energy-saving; hydrogen evolution reaction; semi-dehydrogenation
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Funding
- National Natural Science Foundation of China [21871111]
- Excellent Youth Foundation of Hubei Province of China [2019CFA078]
- Opening Project of Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University
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The study demonstrates that coupling the H-2 evolution reaction in water with thermodynamically favorable organic oxidation reactions using Co3O4@NF as an electrocatalyst can enhance energy conversion efficiency and produce value-added chemicals.
Coupling the H-2 evolution reaction in water with thermodynamically favorable organic oxidation reactions is highly desirable, because it can enhance the energy conversion efficiency compared with electrocatalytic water splitting, and produce value-added chemicals instead of O-2 in the anodic reaction. Herein, Co3O4 nanoribbon arrays in situ grown on nickel foam (Co3O4@NF) was employed as an effective electrocatalyst for the selective oxidation of tetrahydroisoquinolines (THIQs). Various value-added semi-dehydrogenation products including dihydroisoquinolines with electro-deficient or -rich groups could be obtained with moderate yields and faradaic efficiencies. Benefitting from the rich surface active sites of Co3O4@NF, a two-electrode (Co3O4@NF||Pt) electrolytic system drove a benchmark current density of 10 mA cm(-2) at a cell voltage as low as 1.446 V in 1.0 M KOH aqueous solution containing 0.02 M THIQ, which was reduced by 174 mV in comparison with that of overall water splitting.
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