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Solar energy conversion using photochemical molecular devices: photocatalytic hydrogen production from water using mixed-metal supramolecular complexes

Thermodynamic study of the adsorbed hydrogen phase in Cu-based metal-organic frameworks at cryogenic temperatures

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Energy & Environmental Science Vol - 2 Issue - 3

Energy & Environmental Science Vol - 2 Issue - 2

Energy & Environmental Science Vol -1

Solar energy conversion using photochemical molecular devices: photocatalytic hydrogen production from water using mixed-metal supramolecular complexes

Content Provider	Royal Society of Chemistry (RSC)
Author	Brewer, Karen J. Arachchige, Shamindri M. Brown, Jared R. Rangan, Krishnan
Copyright Year	2009
Abstract	Photocatalytic generation of hydrogen from water is an integral part of the next generation clean fuel technologies. The conversion of solar energy into useful chemical energy is of great interest in contemporary investigations. The splitting of water is a multi-electron process involving the breaking and making of chemical bonds which requires multi-component photocatalytic systems. Supramolecular complexes [{(TL)2Ru(BL)}2RhX2](Y)5 (where TL = terminal ligand, BL = bridging ligand, X = Cl− or Br−, and Y = PF6− or Br−) have been synthesized and studied for their light absorbing, electrochemical and photocatalytic properties. The supramolecular complexes in this investigation are multi-component systems comprised of two ruthenium based light absorbers connected through bridging ligands to a central rhodium, which acts as an electron collecting center upon excitation. These complexes absorb light throughout the ultraviolet and visible regions of the solar spectrum. The supramolecular complexes possess ruthenium based highest occupied molecular orbitals (HOMO) and a rhodium based lowest unoccupied molecular orbital (LUMO). These molecular devices have been investigated and shown to function as photoinitiated electron collectors at the reactive rhodium metal center, and explored as photocatalysts to generate hydrogen from water in an aqueous solution in the presence of an electron donor.
Starting Page	410
Ending Page	419
Page Count	10
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	2
Issue Number	4
Journal	Energy & Environmental Science
DOI	10.1039/b812049h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Hydrogen Integral Solar energy Ligand Bridging ligand Hexafluorophosphate Electrochemistry Ruthenium Rhodium Ultraviolet Molecular orbital Redox
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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