Electrochemical, surface and electrocatalytic properties of electrode multilayer assemblies composed of a ruthenium metallodendrimer and a wheel-shaped Cu-20 Tungstophosphate

Bushra Ali; Shahzad Imar; Fathima Laffir; Timothy McCormac

doi:10.1016/j.jelechem.2019.01.047

Electrochemical, surface and electrocatalytic properties of electrode multilayer assemblies composed of a ruthenium metallodendrimer and a wheel-shaped Cu-20 Tungstophosphate

Bushra Ali, Shahzad Imar, Fathima Laffir, Timothy McCormac

Dundalk Institute of Technology

Research output: Contribution to journal › Review article › peer-review

Abstract

Ruthenium (II) metallodendrimer (RuDen) and the wheel-shaped Cu ₂₀ -Tungstophosphate [Cu ₂₀ Cl(OH) ₂₄ (H ₂ O) ₁₂ (P ₈ W ₄₈ O ₁₈₄ )] ²⁵⁻ heteropolyanion (HPA) were successfully immobilised on a glassy carbon electrode through employment of the Layer-by-Layer (LBL) deposition method. The fabricated (Cu ₂₀ P ₈ W ₄₈ /RuDen) multilayer films have been investigated with cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and surface based techniques. The layers exhibited well behaved redox activity for both the HPA and RuDen moieties and exhibited good stability towards redox cycling and associated thin layer behaviour. The charge transfer resistance (R _ct ) and Warburg Impedance (Z _w ) obtained values for the layers by EIS indicated an increase the compactness of the layers upon construction. The (Cu ₂₀ P ₈ W ₄₈ /RuDen) multilayer films exhibited electrocatalytic ability towards the reduction of iodate.

Original language	English
Pages (from-to)	77-84
Number of pages	8
Journal	Journal of Electroanalytical Chemistry
Volume	836
DOIs	https://doi.org/10.1016/j.jelechem.2019.01.047
Publication status	Published - 1 Mar 2019

Keywords

Crown
Heteropolyanion
Iodate
Layer by layer
Metallodendrimer

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10.1016/j.jelechem.2019.01.047

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@article{3a05aa9237ff42db84f3cfb2b71ccadd,

title = "Electrochemical, surface and electrocatalytic properties of electrode multilayer assemblies composed of a ruthenium metallodendrimer and a wheel-shaped Cu-20 Tungstophosphate",

abstract = " Ruthenium (II) metallodendrimer (RuDen) and the wheel-shaped Cu 20 -Tungstophosphate [Cu 20 Cl(OH) 24 (H 2 O) 12 (P 8 W 48 O 184 )] 25− heteropolyanion (HPA) were successfully immobilised on a glassy carbon electrode through employment of the Layer-by-Layer (LBL) deposition method. The fabricated (Cu 20 P 8 W 48 /RuDen) multilayer films have been investigated with cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and surface based techniques. The layers exhibited well behaved redox activity for both the HPA and RuDen moieties and exhibited good stability towards redox cycling and associated thin layer behaviour. The charge transfer resistance (R ct ) and Warburg Impedance (Z w ) obtained values for the layers by EIS indicated an increase the compactness of the layers upon construction. The (Cu 20 P 8 W 48 /RuDen) multilayer films exhibited electrocatalytic ability towards the reduction of iodate.",

keywords = "Crown, Heteropolyanion, Iodate, Layer by layer, Metallodendrimer",

author = "Bushra Ali and Shahzad Imar and Fathima Laffir and Timothy McCormac",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = mar,

day = "1",

doi = "10.1016/j.jelechem.2019.01.047",

language = "English",

volume = "836",

pages = "77--84",

journal = "Journal of Electroanalytical Chemistry",

issn = "1572-6657",

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Electrochemical, surface and electrocatalytic properties of electrode multilayer assemblies composed of a ruthenium metallodendrimer and a wheel-shaped Cu-20 Tungstophosphate. / Ali, Bushra; Imar, Shahzad; Laffir, Fathima et al.
In: Journal of Electroanalytical Chemistry, Vol. 836, 01.03.2019, p. 77-84.

Research output: Contribution to journal › Review article › peer-review

TY - JOUR

T1 - Electrochemical, surface and electrocatalytic properties of electrode multilayer assemblies composed of a ruthenium metallodendrimer and a wheel-shaped Cu-20 Tungstophosphate

AU - Ali, Bushra

AU - Imar, Shahzad

AU - Laffir, Fathima

AU - McCormac, Timothy

PY - 2019/3/1

Y1 - 2019/3/1

N2 - Ruthenium (II) metallodendrimer (RuDen) and the wheel-shaped Cu 20 -Tungstophosphate [Cu 20 Cl(OH) 24 (H 2 O) 12 (P 8 W 48 O 184 )] 25− heteropolyanion (HPA) were successfully immobilised on a glassy carbon electrode through employment of the Layer-by-Layer (LBL) deposition method. The fabricated (Cu 20 P 8 W 48 /RuDen) multilayer films have been investigated with cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and surface based techniques. The layers exhibited well behaved redox activity for both the HPA and RuDen moieties and exhibited good stability towards redox cycling and associated thin layer behaviour. The charge transfer resistance (R ct ) and Warburg Impedance (Z w ) obtained values for the layers by EIS indicated an increase the compactness of the layers upon construction. The (Cu 20 P 8 W 48 /RuDen) multilayer films exhibited electrocatalytic ability towards the reduction of iodate.

AB - Ruthenium (II) metallodendrimer (RuDen) and the wheel-shaped Cu 20 -Tungstophosphate [Cu 20 Cl(OH) 24 (H 2 O) 12 (P 8 W 48 O 184 )] 25− heteropolyanion (HPA) were successfully immobilised on a glassy carbon electrode through employment of the Layer-by-Layer (LBL) deposition method. The fabricated (Cu 20 P 8 W 48 /RuDen) multilayer films have been investigated with cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and surface based techniques. The layers exhibited well behaved redox activity for both the HPA and RuDen moieties and exhibited good stability towards redox cycling and associated thin layer behaviour. The charge transfer resistance (R ct ) and Warburg Impedance (Z w ) obtained values for the layers by EIS indicated an increase the compactness of the layers upon construction. The (Cu 20 P 8 W 48 /RuDen) multilayer films exhibited electrocatalytic ability towards the reduction of iodate.

KW - Crown

KW - Heteropolyanion

KW - Iodate

KW - Layer by layer

KW - Metallodendrimer

UR - http://www.scopus.com/inward/record.url?scp=85060895838&partnerID=8YFLogxK

U2 - 10.1016/j.jelechem.2019.01.047

DO - 10.1016/j.jelechem.2019.01.047

M3 - Review article

AN - SCOPUS:85060895838

SN - 1572-6657

VL - 836

SP - 77

EP - 84

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Electrochemical, surface and electrocatalytic properties of electrode multilayer assemblies composed of a ruthenium metallodendrimer and a wheel-shaped Cu-20 Tungstophosphate

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Keywords

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