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A hydrogen‐storing quinaldine polymer: nickel‐electrodeposition‐assisted hydrogenation and subsequent hydrogen evolution
Author(s) -
Kato Ryo,
Oya Takahiro,
Shimazaki Yuma,
Oyaizu Kenichi,
Nishide Hiroyuki
Publication year - 2017
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5327
Subject(s) - hydrogen , nickel , chemical engineering , polymer , materials science , catalysis , substrate (aquarium) , electrolyte , acrylic acid , layer (electronics) , chemistry , copolymer , nanotechnology , metallurgy , organic chemistry , composite material , electrode , oceanography , engineering , geology
Quinaldine‐substituted poly(acrylic acid) ( PQD ) and its hydrogenated 1,2,3,4‐tetrahydroquinaldine derivative ( PHQD ) were prepared, and a cycle of hydrogen fixing and hydrogen evolution in and from the polymer, respectively, is described. A PQD layer coated on a carbon substrate was electrochemically reduced or hydrogenated using water as a hydrogen source, accompanied by the electrodeposition of nickel microparticles in the polymer layer, to convert PQD to PHQD . The conversion efficiency was enhanced by coating PQD on the substrate as a scaffold of nickel electrodeposition, in comparison with that of quinaldine and PQD dissolved in the electrolyte. The formed PHQD evolved hydrogen by simply warming it in water containing an iridium complex catalyst. Hydrogen fixing and evolution under mild conditions could suggest a new system of hydrogen carriers. © 2017 Society of Chemical Industry