Alex Ibhadon1, G.M.Greenway and P. Falaras3

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Presentation transcript:

Alex Ibhadon1, G.M.Greenway and P. Falaras3 1Faculty of Science and the Environment, University of Hull 2Department of Chemistry, University of Hull, Cottingham Road, Hull, United Kingdom 3National Centre of Scientific Research, Institute of Physical Chemistry Athens , Greece Abstract This paper reports the synthesis, characterisation and application of titania based catalysts for environmental VOC remediation in the gas phase and solution. Advanced oxidation processes, heterogeneous catalysis

BINARY METAL OXIDE COMPOSITE NANOSTRUCTURES Composite nanostructures and particles (RuO2, SiO2, TiO2 ,etc) Synthesis and Characterization Optimization of Catalyst properties Multi-functionality Reactor design to accommodate Catalyst Gas-Phase studies Solution Phase studies

Environmental Applications

EXAMPLES OF TiO2 CATALYSTS Films – deposit unto glass substrates Deposition unto Tiles/Ceramics Pastes - coated unto glass spheres Particles - PBR application TiO2 Foams – solution and gas phase Composite nanostructures Hybrids Other semiconductors

Scanning Electron Microscopy TiO2 Film

CHARACTERIZATION OF TiO2 FILMS WITH AFM

Packed Bed Photoreactor

Solution Phase Photocatalysis Kansal et all

Treatment of Industrial Effluents: Azo -Dye Degradation Degradation pH dependent Foam – initial stages very fast, absorption Optimum catalyst load Optimum pollutant concentration Reactor design Kinetics, radiation modelling Problems of light absorption Problems of light scattering

Kinetics of Degradation

Effect of pH on Adsorption Chantal Guillard , , a, Hinda Lachheba, b, Ammar Houasb, Mohamed Ksibib, Elimame Elalouib and Jean-Marie Herrmanna

Methyl Orange Degradation

Methyl Orange Degradation

Methyl Orange Degradation

Gas-Phase Degradation of BTX

Degradation of BTX

Conclusion Surface Processes Surface Area, specific surface Area Radiation absorption measurement and modelling Kinetics – Langmuir – early stages of reaction Composite material characterization Applications