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Boosting Hydrogen Production by Anodic Oxidation of Primary Amines over a NiSe Nanorod Electrode
Author(s) -
Huang Yi,
Chong Xiaodan,
Liu Cuibo,
Liang Yu,
Zhang Bin
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201807717
Subject(s) - oxygen evolution , chemistry , catalysis , anode , electrochemistry , inorganic chemistry , redox , hydrogen production , nanorod , primary (astronomy) , electrolyte , aqueous solution , amine gas treating , electrode , materials science , organic chemistry , nanotechnology , physics , astronomy
For electrocatalytic water splitting, the sluggish anodic oxygen evolution reaction (OER) restricts the cathodic hydrogen evolution reaction (HER). Therefore, developing an alternative anodic reaction with accelerating kinetics to produce value‐added chemicals, especially coupled with HER, is of great importance. Now, a thermodynamically more favorable primary amine (−CH 2 −NH 2 ) electrooxidation catalyzed by NiSe nanorod arrays in water is reported to replace OER for enhancing HER. The increased H 2 production can be obtained at cathode; meanwhile, a variety of aromatic and aliphatic primary amines are selectively electrooxidized to nitriles with good yields at the anode. Mechanistic investigations suggest that Ni II /Ni III may serve as the redox active species for the primary amines transformation. Hydrophobic nitrile products can readily escape from aqueous electrolyte/electrode interface, avoiding the deactivation of the catalyst and thus contributing to continuous gram‐scale synthesis.