Polymeric binuclear ruthenium complex as efficient electrocatalyst for oxygen evolution reaction

Tiago A. Matias; André L.A. Parussulo; Paola A. Benavides; Robson R. Guimarães; André H.B. Dourado; Marcelo Nakamura; Susana I.Córdoba de Torresi; Mauro Bertotti; Koiti Araki

doi:10.1016/j.electacta.2018.06.138

Polymeric binuclear ruthenium complex as efficient electrocatalyst for oxygen evolution reaction

Tiago A. Matias
, André L.A. Parussulo
, Paola A. Benavides
, Robson R. Guimarães
, André H.B. Dourado
, Marcelo Nakamura
, Susana I.Córdoba de Torresi
, Mauro Bertotti
, Koiti Araki

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A robust polymeric material constituted by chains of binuclear aqua ruthenium terpyridylphenanthroline complexes connected through benzene ring meta-positions, exhibiting an unusual two electrons and two protons PCET (proton-coupled electron transfer) process and enhanced oxygen evolution reaction (OER) activity, is described. The catalytic active [Ru^V[dbnd]O] species is generated at potentials more positive than +1.5 V (NHE) in the poly-[{Ru(H₂O)(phen)}₂(tpy₂ph)] film, as confirmed by the rise of the ruthenyl (Ru^V[dbnd]O) stretching band at 810 cm⁻¹ in the Raman spectrum, and the clear change to a higher activity regime as confirmed by EIS. Faradaic efficiency for OER as high as 39% was achieved at +1.8 V, indicating that poly-[{Ru(H₂O)(phen)}₂(tpy₂ph)] is one of the most active ruthenium terpyridine complexes ever prepared. The synthesis and characterization of the monomeric binuclear [{RuCl(Clphen)}₂(tpy₂ph)]²⁺ and its respective [{Ru(H₂O)(Clphen)}₂(tpy₂ph)]⁴⁺ aqua complex are also fully described.

Original language	English
Pages (from-to)	18-26
Number of pages	9
Journal	Electrochimica Acta
Volume	283
DOIs	https://doi.org/10.1016/j.electacta.2018.06.138
State	Published - 1 Sep 2018
Externally published	Yes

Keywords

Binuclear catalyst
Electrocatalysis
High valence complex
Modified electrodes
Oxygen evolution reaction
Ruthenium complex

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10.1016/j.electacta.2018.06.138

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@article{0dd4b483b11d46178214e720aa16709c,

title = "Polymeric binuclear ruthenium complex as efficient electrocatalyst for oxygen evolution reaction",

abstract = "A robust polymeric material constituted by chains of binuclear aqua ruthenium terpyridylphenanthroline complexes connected through benzene ring meta-positions, exhibiting an unusual two electrons and two protons PCET (proton-coupled electron transfer) process and enhanced oxygen evolution reaction (OER) activity, is described. The catalytic active [RuV[dbnd]O] species is generated at potentials more positive than +1.5 V (NHE) in the poly-[\{Ru(H2O)(phen)\}2(tpy2ph)] film, as confirmed by the rise of the ruthenyl (RuV[dbnd]O) stretching band at 810 cm−1 in the Raman spectrum, and the clear change to a higher activity regime as confirmed by EIS. Faradaic efficiency for OER as high as 39\% was achieved at +1.8 V, indicating that poly-[\{Ru(H2O)(phen)\}2(tpy2ph)] is one of the most active ruthenium terpyridine complexes ever prepared. The synthesis and characterization of the monomeric binuclear [\{RuCl(Clphen)\}2(tpy2ph)]2+ and its respective [\{Ru(H2O)(Clphen)\}2(tpy2ph)]4+ aqua complex are also fully described.",

keywords = "Binuclear catalyst, Electrocatalysis, High valence complex, Modified electrodes, Oxygen evolution reaction, Ruthenium complex",

author = "Matias, \{Tiago A.\} and Parussulo, \{Andr{\'e} L.A.\} and Benavides, \{Paola A.\} and Guimar{\~a}es, \{Robson R.\} and Dourado, \{Andr{\'e} H.B.\} and Marcelo Nakamura and \{de Torresi\}, \{Susana I.C{\'o}rdoba\} and Mauro Bertotti and Koiti Araki",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = sep,

day = "1",

doi = "10.1016/j.electacta.2018.06.138",

language = "English",

volume = "283",

pages = "18--26",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Polymeric binuclear ruthenium complex as efficient electrocatalyst for oxygen evolution reaction

AU - Matias, Tiago A.

AU - Parussulo, André L.A.

AU - Benavides, Paola A.

AU - Guimarães, Robson R.

AU - Dourado, André H.B.

AU - Nakamura, Marcelo

AU - de Torresi, Susana I.Córdoba

AU - Bertotti, Mauro

AU - Araki, Koiti

PY - 2018/9/1

Y1 - 2018/9/1

N2 - A robust polymeric material constituted by chains of binuclear aqua ruthenium terpyridylphenanthroline complexes connected through benzene ring meta-positions, exhibiting an unusual two electrons and two protons PCET (proton-coupled electron transfer) process and enhanced oxygen evolution reaction (OER) activity, is described. The catalytic active [RuV[dbnd]O] species is generated at potentials more positive than +1.5 V (NHE) in the poly-[{Ru(H2O)(phen)}2(tpy2ph)] film, as confirmed by the rise of the ruthenyl (RuV[dbnd]O) stretching band at 810 cm−1 in the Raman spectrum, and the clear change to a higher activity regime as confirmed by EIS. Faradaic efficiency for OER as high as 39% was achieved at +1.8 V, indicating that poly-[{Ru(H2O)(phen)}2(tpy2ph)] is one of the most active ruthenium terpyridine complexes ever prepared. The synthesis and characterization of the monomeric binuclear [{RuCl(Clphen)}2(tpy2ph)]2+ and its respective [{Ru(H2O)(Clphen)}2(tpy2ph)]4+ aqua complex are also fully described.

AB - A robust polymeric material constituted by chains of binuclear aqua ruthenium terpyridylphenanthroline complexes connected through benzene ring meta-positions, exhibiting an unusual two electrons and two protons PCET (proton-coupled electron transfer) process and enhanced oxygen evolution reaction (OER) activity, is described. The catalytic active [RuV[dbnd]O] species is generated at potentials more positive than +1.5 V (NHE) in the poly-[{Ru(H2O)(phen)}2(tpy2ph)] film, as confirmed by the rise of the ruthenyl (RuV[dbnd]O) stretching band at 810 cm−1 in the Raman spectrum, and the clear change to a higher activity regime as confirmed by EIS. Faradaic efficiency for OER as high as 39% was achieved at +1.8 V, indicating that poly-[{Ru(H2O)(phen)}2(tpy2ph)] is one of the most active ruthenium terpyridine complexes ever prepared. The synthesis and characterization of the monomeric binuclear [{RuCl(Clphen)}2(tpy2ph)]2+ and its respective [{Ru(H2O)(Clphen)}2(tpy2ph)]4+ aqua complex are also fully described.

KW - Binuclear catalyst

KW - Electrocatalysis

KW - High valence complex

KW - Modified electrodes

KW - Oxygen evolution reaction

KW - Ruthenium complex

UR - https://www.scopus.com/pages/publications/85049063947

U2 - 10.1016/j.electacta.2018.06.138

DO - 10.1016/j.electacta.2018.06.138

M3 - Article

AN - SCOPUS:85049063947

SN - 0013-4686

VL - 283

SP - 18

EP - 26

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Polymeric binuclear ruthenium complex as efficient electrocatalyst for oxygen evolution reaction

Abstract

Keywords

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