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Details of Grant 

EPSRC Reference: GR/R89882/01
Title: The Structure and Reactivity of Surface-anchored Nanoparticles
Principal Investigator: Bowker, Professor M
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Chemistry
Organisation: University of Reading
Scheme: Standard Research (Pre-FEC)
Starts: 01 August 2002 Ends: 31 July 2003 Value (£): 184,016
EPSRC Research Topic Classifications:
Materials Characterisation Surfaces & Interfaces
EPSRC Industrial Sector Classifications:
Chemicals No relevance to Underpinning Sectors
Manufacturing
Related Grants:
Panel History:  
Summary on Grant Application Form
SummaryDescribe the proposed research in about 200 words.We propose to fabricate nanoparficles of Pd and Cu on Ti02 and AI203 surfaces in situ within an STM machine which is capable of atomic resolution at temperatures ranging from 300-1000K. We will investigate the properties of these materials both in terms of structure, reactivity and electronic properties (using scanning tunnelling spectroscopy). The thermal properties will be probed by producing movies of the sintering process in-situ at elevated temperature, including the effect of gas phase reactants on the sintering process and on the morphology of individual particles. These effects will also be related to the preparation methodology, namely, metal vapour deposition (MVD) or metal-organic chemical vapour deposition (MOCVD), including variation of the ligandtype for the latter. Reactive ligands may induce self-nucleation by reactive creation of surface anion vacancies, at least for the reducible oxide. The relationship between particle size/shape and surface reactivity will be determined by a combination of STM and molecular beam reactor work. Anticipated outcomes include an understanding of the interaction between metal and support and how this is affected by fabrication methodology and electronic structure (comparing Pd and Cu, and particle size effects), how reduced dimensions affect reactivity for particular adsorbates/reactants and how the reducibility of the support material affects these outcomes.
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Organisation Website: http://www.rdg.ac.uk