Molecular catalytic system for efficient water splitting

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Molecular catalytic system for efficient water splitting

Title: Molecular catalytic system for efficient water splitting
Author: Joya, Khurram Saleem
Publisher: Leiden Institute of Chemistry (LIC), Faculty of Science, Leiden University
Issue Date: 2011-12-21
Keywords: Artificial leaf
Overpotential
Oxygen evolving catalyst
Solar fuel
Turnover frequency
Turnover number
Water splitting
Abstract: The aim of this dissertation is to construct and explore artificial oxygen evolving complexes that are synthetically accessible, stable, functionally robust and efficient. To achieve this, a class of mono metal water splitting catalysts is introduced in this manuscript and exploitation of these complexes in homogeneous catalysis and in electrochemical studies with surface immobilized catalyst assemblies has been discussed. The catalysts are comprised of a single centre ruthenium or iridium metal core coordinated to a dinitrogen ligand and stabilized by a cyclic conjugated hydrocarbon. Homogeneous catalytic water oxidation is performed with a chemical oxidant as catalyst activator. For electro-assisted experiments, the catalyst complexes are functionalized with carboxylic or phosphonic acid linker units on the dinitrogen ligand that serve as anchoring sites for deposition on conducting oxide electrodes. The electrochemical water splitting systems with molecular catalysts have potential application in e.g. rooftop devices to make personalized energy carriers. The proposed “Artificial Leaf” will soon be the future outcome of the present day technology and efforts in this field. Cheap and easy accessible hydrogen will not only serve as fuel for transportation but also as driving force for green power generation.
Description: Promotor: H.J.M. de Groot
With summary in Dutch
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Joya, K.S., 2011, Doctoral thesis, Leiden University
ISBN: 9789085707998
Sponsor: Higher Education Commission (HEC), Government of Pakistan
Handle: http://hdl.handle.net/1887/18265
 

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application/pdf Chapter 1 Introduction 249.4Kb View/Open
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