A novel ruthenium-tungsten bimetallic complex dye-sensitizer for photoelectrochemical cells application

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Abstract

A novel bimetallic double thiocyanate-bridged ruthenium and tungsten metal complex containing bipyridyl and dithiolene co-ligands was synthesized and the behavior of the complex as a dye-sensitizer for a photoelectrochemical (PEC) cell for a direct water splitting reaction was investigated. The ligands and metal complexes were characterized on the basis of elemental analysis as well as UV-Vis, Fourier transform infrared (FTIR) and nuclear magnetic resonance (1H and 13C NMR) spectroscopy. Cyclic voltammetry of the bimetallic complex showed multiple redox couples, in which half potentials E1/2 at 0.625, 0.05 and 0.61V were assigned as the formal redox processes of Ru(III)/Ru(II) reduction, W(IV)/W(V) and W(V)/W(VI) oxidations, respectively. Photocurrent measurements were performed in homogeneous system and TiO2 was used as the photoanode for photocurrent measurements. Current density generated by the bimetallic complex was higher than that of N3 commercial dye which suggested that the bimetallic complex donated more electrons to the semiconductor.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalSains Malaysiana
Volume43
Issue number1
Publication statusPublished - Jan 2014

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Photoelectrochemical cells
Tungsten
Ruthenium
Coordination Complexes
Photocurrents
Coloring Agents
Ligands
2,2'-Dipyridyl
Nuclear magnetic resonance spectroscopy
Cyclic voltammetry
Fourier transforms
Current density
Nuclear magnetic resonance
Semiconductor materials
Infrared radiation
Oxidation
Electrons
Water
Chemical analysis
Oxidation-Reduction

Keywords

  • Bimetallic
  • Bipyridyl
  • Dithiolene
  • Dye-sensitizer

ASJC Scopus subject areas

  • General

Cite this

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title = "A novel ruthenium-tungsten bimetallic complex dye-sensitizer for photoelectrochemical cells application",
abstract = "A novel bimetallic double thiocyanate-bridged ruthenium and tungsten metal complex containing bipyridyl and dithiolene co-ligands was synthesized and the behavior of the complex as a dye-sensitizer for a photoelectrochemical (PEC) cell for a direct water splitting reaction was investigated. The ligands and metal complexes were characterized on the basis of elemental analysis as well as UV-Vis, Fourier transform infrared (FTIR) and nuclear magnetic resonance (1H and 13C NMR) spectroscopy. Cyclic voltammetry of the bimetallic complex showed multiple redox couples, in which half potentials E1/2 at 0.625, 0.05 and 0.61V were assigned as the formal redox processes of Ru(III)/Ru(II) reduction, W(IV)/W(V) and W(V)/W(VI) oxidations, respectively. Photocurrent measurements were performed in homogeneous system and TiO2 was used as the photoanode for photocurrent measurements. Current density generated by the bimetallic complex was higher than that of N3 commercial dye which suggested that the bimetallic complex donated more electrons to the semiconductor.",
keywords = "Bimetallic, Bipyridyl, Dithiolene, Dye-sensitizer",
author = "Arifin Khuzaimah and {Wan Daud}, {Wan Ramli} and Mohammad Kassim",
year = "2014",
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T1 - A novel ruthenium-tungsten bimetallic complex dye-sensitizer for photoelectrochemical cells application

AU - Khuzaimah, Arifin

AU - Wan Daud, Wan Ramli

AU - Kassim, Mohammad

PY - 2014/1

Y1 - 2014/1

N2 - A novel bimetallic double thiocyanate-bridged ruthenium and tungsten metal complex containing bipyridyl and dithiolene co-ligands was synthesized and the behavior of the complex as a dye-sensitizer for a photoelectrochemical (PEC) cell for a direct water splitting reaction was investigated. The ligands and metal complexes were characterized on the basis of elemental analysis as well as UV-Vis, Fourier transform infrared (FTIR) and nuclear magnetic resonance (1H and 13C NMR) spectroscopy. Cyclic voltammetry of the bimetallic complex showed multiple redox couples, in which half potentials E1/2 at 0.625, 0.05 and 0.61V were assigned as the formal redox processes of Ru(III)/Ru(II) reduction, W(IV)/W(V) and W(V)/W(VI) oxidations, respectively. Photocurrent measurements were performed in homogeneous system and TiO2 was used as the photoanode for photocurrent measurements. Current density generated by the bimetallic complex was higher than that of N3 commercial dye which suggested that the bimetallic complex donated more electrons to the semiconductor.

AB - A novel bimetallic double thiocyanate-bridged ruthenium and tungsten metal complex containing bipyridyl and dithiolene co-ligands was synthesized and the behavior of the complex as a dye-sensitizer for a photoelectrochemical (PEC) cell for a direct water splitting reaction was investigated. The ligands and metal complexes were characterized on the basis of elemental analysis as well as UV-Vis, Fourier transform infrared (FTIR) and nuclear magnetic resonance (1H and 13C NMR) spectroscopy. Cyclic voltammetry of the bimetallic complex showed multiple redox couples, in which half potentials E1/2 at 0.625, 0.05 and 0.61V were assigned as the formal redox processes of Ru(III)/Ru(II) reduction, W(IV)/W(V) and W(V)/W(VI) oxidations, respectively. Photocurrent measurements were performed in homogeneous system and TiO2 was used as the photoanode for photocurrent measurements. Current density generated by the bimetallic complex was higher than that of N3 commercial dye which suggested that the bimetallic complex donated more electrons to the semiconductor.

KW - Bimetallic

KW - Bipyridyl

KW - Dithiolene

KW - Dye-sensitizer

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