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Platinum/Nickel Bicarbonate Heterostructures towards Accelerated Hydrogen Evolution under Alkaline Conditions
Author(s) -
Lao Mengmeng,
Rui Kun,
Zhao Guoqiang,
Cui Peixin,
Zheng Xusheng,
Dou Shi Xue,
Sun Wenping
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201901010
Subject(s) - bicarbonate , catalysis , platinum , nickel , dissociation (chemistry) , nanomaterials , chemistry , inorganic chemistry , nanoparticle , adsorption , platinum nanoparticles , hydrogen , chemical engineering , materials science , nanotechnology , organic chemistry , engineering
Heterostructured nanomaterials, generally have physicochemical properties that differ from those of the individual components, and thus have potential in a wide range of applications. New platinum (Pt)/nickel bicarbonate (Ni(HCO 3 ) 2 ) heterostructures are designed for an efficient alkaline hydrogen evolution reaction (HER). Notably, the specific and mass activity of Pt in Pt/Ni(HCO 3 ) 2 are substantially improved compared to the bare Pt nanoparticles (NPs). The Ni(HCO 3 ) 2 provides abundant water adsorption/dissociation sites and modulate the electronic structure of Pt, which determine the elementary reaction kinetics of alkaline HER. The Ni(HCO 3 ) 2 nanoplates offer a platform for the uniform dispersion of Pt NPs, ensuring the maximum exposure of active sites. The results demonstrate that, Ni(HCO 3 ) 2 is an effective catalyst promoter for alkaline HER.