Hydrogen evolution reaction enhanced by water-soluble metallopyridinoporphyrazine complex adsorbed on highly oriented pyrolytic graphite

被引：4

作者：

Klusackova, Monika ^{[1
,2
]}

Janda, Pavel ^{[1
]}

Tarabkova, Hana ^{[1
]}

机构：

[1] Czech Acad Sci, J Heyrovsky Inst Phys Chem, Vvi, Dolejskova 3, Prague 18223 8, Czech Republic

[2] Charles Univ Prague, Dept Analyt Chem, Fac Sci, Hlavova 8, Prague 12843 2, Czech Republic

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 23期

关键词：

Metallopyridinoporphyrazine; Modified electrode; Electrocatalysis; Hydrogen evolution reaction; pH effect; PHTHALOCYANINES; NANOPARTICLES; COBALT; ELECTROCATALYSIS; AGGREGATION; REDUCTION; EFFICIENT; ELECTRODE;

D O I：

10.1016/j.ijhydene.2019.03.177

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The ultrathin (similar to 2 nm) film of N,N',N '',N'''-tetramethyltetra-3,4-pyridino-porphyrazinato-cobalt(II) complex adsorbed on the basal plane of highly oriented pyrolytic graphite (HOPG/Co(I)Tmtppa) was used as a mediator for electrocatalytic hydrogen evolution reaction (HER) in a wide range of pH. The Co(I)Tmtppa film was characterized by in-situ backscattering spectroscopy, atomic force microscopy and cyclic voltammetry. Electrocatalytic measurements of HOPG/Co(I)Tmtppa electrode using voltammetric techniques showed up to 60 fold increase of current density and overpotential decreased by 300 mV, compared to the bare HOPG electrode at pH 11 and confirmed very good stability with only 8% deviation over 1000 cycles. The Tafel analysis indicated the Volmer-Heyrovsky mechanism of hydrogen evolution reaction with hydrogen adsorption rate-determining step at all pH values. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：11431 / 11440

页数：10

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