Electrocatalysis by crown-type polyoxometalates multi-substituted by transition metal ions; Comparative study

Rashda Naseer; Sib Sankar Mal; Ulrich Kortz; Gordon Armstrong; Fathima Laffir; Calum Dickinson; Mikhail Vagin; Timothy McCormac

doi:10.1016/j.electacta.2015.07.152

Electrocatalysis by crown-type polyoxometalates multi-substituted by transition metal ions; Comparative study

Rashda Naseer, Sib Sankar Mal, Ulrich Kortz, Gordon Armstrong, Fathima Laffir, Calum Dickinson, Mikhail Vagin, Timothy McCormac

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

Abstract

Abstract The difference in electrochemical properties of three crown-type polyoxometalates multi-substituted by Fe³⁺, Ni²⁺ or Co²⁺ ions and their precursor has been rationalized with respect to their electrocatalytic performances studied in solution and in the immobilized state within the layer-by-layer film formed with a positively charged pentaerythritol-based Ru(II)-metallodendrimer. The film assembly was monitored with electrochemical methods and characterized by surface analysis techniques. An influence of the terminal layer on the electrode reaction and on film porosity has been observed. The electrocatalytic performance of the compounds on nitrite reduction was assessed in solution and in the immobilized state.

Original language	English
Article number	25434
Pages (from-to)	1248-1255
Number of pages	8
Journal	Electrochimica Acta
Volume	176
DOIs	https://doi.org/10.1016/j.electacta.2015.07.152
Publication status	Published - 11 Aug 2015

Keywords

electrocatalysis
layer-by-layer
nitrite reduction
polyoxometalate
transition metal ion-substituted crown-type polyoxometalate

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10.1016/j.electacta.2015.07.152

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title = "Electrocatalysis by crown-type polyoxometalates multi-substituted by transition metal ions; Comparative study",

abstract = "Abstract The difference in electrochemical properties of three crown-type polyoxometalates multi-substituted by Fe3+, Ni2+ or Co2+ ions and their precursor has been rationalized with respect to their electrocatalytic performances studied in solution and in the immobilized state within the layer-by-layer film formed with a positively charged pentaerythritol-based Ru(II)-metallodendrimer. The film assembly was monitored with electrochemical methods and characterized by surface analysis techniques. An influence of the terminal layer on the electrode reaction and on film porosity has been observed. The electrocatalytic performance of the compounds on nitrite reduction was assessed in solution and in the immobilized state.",

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author = "Rashda Naseer and Mal, {Sib Sankar} and Ulrich Kortz and Gordon Armstrong and Fathima Laffir and Calum Dickinson and Mikhail Vagin and Timothy McCormac",

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doi = "10.1016/j.electacta.2015.07.152",

language = "English",

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T1 - Electrocatalysis by crown-type polyoxometalates multi-substituted by transition metal ions; Comparative study

AU - Naseer, Rashda

AU - Mal, Sib Sankar

AU - Kortz, Ulrich

AU - Armstrong, Gordon

AU - Laffir, Fathima

AU - Dickinson, Calum

AU - Vagin, Mikhail

AU - McCormac, Timothy

PY - 2015/8/11

Y1 - 2015/8/11

N2 - Abstract The difference in electrochemical properties of three crown-type polyoxometalates multi-substituted by Fe3+, Ni2+ or Co2+ ions and their precursor has been rationalized with respect to their electrocatalytic performances studied in solution and in the immobilized state within the layer-by-layer film formed with a positively charged pentaerythritol-based Ru(II)-metallodendrimer. The film assembly was monitored with electrochemical methods and characterized by surface analysis techniques. An influence of the terminal layer on the electrode reaction and on film porosity has been observed. The electrocatalytic performance of the compounds on nitrite reduction was assessed in solution and in the immobilized state.

AB - Abstract The difference in electrochemical properties of three crown-type polyoxometalates multi-substituted by Fe3+, Ni2+ or Co2+ ions and their precursor has been rationalized with respect to their electrocatalytic performances studied in solution and in the immobilized state within the layer-by-layer film formed with a positively charged pentaerythritol-based Ru(II)-metallodendrimer. The film assembly was monitored with electrochemical methods and characterized by surface analysis techniques. An influence of the terminal layer on the electrode reaction and on film porosity has been observed. The electrocatalytic performance of the compounds on nitrite reduction was assessed in solution and in the immobilized state.

KW - electrocatalysis

KW - layer-by-layer

KW - nitrite reduction

KW - polyoxometalate

KW - transition metal ion-substituted crown-type polyoxometalate

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DO - 10.1016/j.electacta.2015.07.152

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VL - 176

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EP - 1255

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 25434

ER -

Electrocatalysis by crown-type polyoxometalates multi-substituted by transition metal ions; Comparative study

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