| EPSRC Reference: |
GR/S25579/01 |
| Title: |
Light driven oxygen scavenging by polymer/titania nanocomposite films |
| Principal Investigator: |
Durrant, Professor J |
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| Project Partners: |
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| Department: |
Chemistry |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 2003 |
Ends: |
30 April 2005 |
Value (£): |
97,229
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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Summary on Grant Application Form |
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This project aims to investigate the use of semiconductor photocatalyisis as a method of oxygen scavenging in closed environments. The approach is based upon the ultraviolet illumination of a nanocrystalline metal oxide film in the presence of excess of a sacrificial organic hole scavenger. Our initial studies have already demonstrated the feasibility of this approach, employing nanocomposite titania/polyethylene oxide films deposited on both glass and plastic substrates to achieve the light driven deoxygenation of a closed environment. The experiments we detail in this proposal are designed to identify the key issues controlling the efficiency of oxygen scavenging by such nanocomposite films by combining steady state quantum yield and electrochemical studies with transient optical studies of non-scattering composite films. This will not only elucidate the mechanism of oxygen uptake, a fundamental, but poorly understood, process in semiconductor photocatalysis, but also allow a systematic optimisation of this process and evaluation its viability for technological applications. We have already identified two specific areas of potential techniogical application - organic optoelectronics and modified atmosphere packaging of food stuffs; model system studies will be conducted to evaluate the potential for both applications in conjuction with interested commercial partners.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.imperial.ac.uk |