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RESEARCH INTERESTS

Water and Wastewater Treatment, Sorption, Porous Materials, Nanomaterials, Membrane Separation, Heavy Metals

ABOUT/BIOGRAPHY

Dr Sergios Papageorgiou is a Chemist Holding an MSc and a PhD degree in Oceanography, and has been a member of the Materials And Membranes for Environmental Separations Laboratory since 2002.
His research interests include the development and characterisation of nanomaterials and Lab scale evaluation of their properties, mainly in the liquid but also in the gas phase.

Α. Materials Development

• Activated Carbon
• Organised mesoporous materials mainly silica based (SBA-15) and doped Silicas
• Porous Silicon Carbide (SiC)
• Functionalised Titanium oxide for photocatalytic applications
• Carbon Nanostructures (Nanotubes, Nanodisks, Graphene Oxide)
• Inorganic Layered materials
• Metallic nanoparticles prepared with the Pechini method (Polyol Process)
• Porous polymer materials by means of supercritical Carbon Dioxide
• Hybrid materials by modification of inorganic particles and carbon nanostructures, carbon nanotubes development on inorganic substrates etc.
• Nanocomposite materials. (polymer/clays composites, polymer/carbon-based fillers)
• Ceramic membranes
• Polymeric Hollow fiber membranes

B. Material Characterisation

Variety of characterisation methods such as SEM, TEM, AFM, spectroscopic techniques (FTIR ), thermal methods (TGA, DSC), chromatography (Ionic, HPLC) Atomic adsorption (Flame, Furnace, ICP ). Structural characterisation of advanced nanostructured materials by means of:
a) static (batch) techniques (isothermal adsorption, biosorption etc) for the determination of their sorption properties.
b) Dynamic techniques (breakthrough curves, selectivity experiments) for the determination of the dynamic behaviour of materials in various applications.

Γ. Evaluation of materials in various processes
Evaluation of the efficiency of nanomaterials in environmental applications such as:
(ι) adsorption, such as heavy metals and organic pollutants removal from wastewaters, carbon dioxide storage etc.
(ιι) Membrane separations for liquid (wastewater treatment) and gas ( gas mixtures separations)
(ιιι) Catalytic (deNOx, CH4 oxidation, HC reforming) and photocatalytic applications (organic pollutants elimination, water treatment, CO2 conversion etc).
with the combination of experimental and theoretical tools, parameters such as temperature, mixture composition, pH, ionic strength can be studied, their role in a process can be determined and they can be optimised in order to achieve increased process efficiency and predict the materials behaviour in a given application under different conditions.

PUBLICATIONS

Theodorakopoulos, G.V., Katsaros, F.K., Papageorgiou, S.K., Beazi-Katsioti, M. and Romanos, G.Em., Engineering Commercial TiO2 powder into Tailored Beads for Efficient Water Purification Materials, Volume 15, Article Number: 326, 2022 [doi]

Lyra, K.-M., Kaminari, A., Panagiotaki, K.N., Spyrou, K., Papageorgiou, S., Sakellis, E., Katsaros, F.K. and Sideratou, Z., Multi-walled carbon nanotubes decorated with guanidinylated dendritic molecular transporters: An efficient platform for the selective anticancer activity of doxorubicin Pharmaceutics, Volume 13, Article Number: 858, 2021 [doi]

Papavasiliou, A., Deze, E.G., Papageorgiou, S.K., Sideratou, Z., Boukos, N., Poulakis, E., Philippopoulos, C.J., Glisenti, A., Van Everbroeck, T., Cool, P. and Katsaros, F.K., A hyperbranched polymer synthetic strategy for the efficient fixation of metal species within nanoporous structures: Application in automotive catalysis Chemical Engineering Journal, Volume 421, Article Number: 129496, 2021 [doi]

Theodorakopoulos, G.V., Romanos, G.E., Katsaros, F.K., Papageorgiou, S.K., Kontos, A.G., Spyrou, K., Beazi-Katsioti, M. and Falaras, P., Structuring efficient photocatalysts into bespoke fiber shaped systems for applied water treatment Chemosphere, Volume 277, Article Number: 130253, 2021 [doi]

Heliopoulos, N.S., Kythreoti, G., Lyra, K.M., Panagiotaki, K.N., Papavasiliou, A., Sakellis, E., Papageorgiou, S., Kouloumpis, A., Gournis, D., Katsaros, F.K., Stamatakis, K. and Sideratou, Z., Cytotoxicity effects of water-soluble multi-walled carbon nanotubes decorated with quaternized hyperbranched poly(Ethyleneimine) derivatives on autotrophic and heterotrophic gram-negative bacteria Pharmaceuticals, Volume 13, Pages: 1-25, Article Number: 293, 2020 [doi]

Heliopoulos, N.S., Kouzilos, G.N., Giarmenitis, A.I., Papageorgiou, S.K., Stamatakis, K. and Katsaros, F.K., Viscose Fabric Functionalized with Copper and Copper Alginate Treatment Toward Antibacterial and UV Blocking Properties Fibers and Polymers, Volume 21, Pages: 1238-1250, 2020 [doi]

Favvas, E.P., Heliopoulos, N.S., Karousos, D.S., Devlin, E., Papageorgiou, S.K., Petridis, D. and Karanikolos, G.N., Mixed matrix polymeric and carbon hollow fiber membranes with magnetic iron-based nanoparticles and their application in gas mixture separation Materials Chemistry and Physics, Volume 223, Pages: 220-229, 2019 [doi]

Sapalidis, A., Sideratou, Z., Panagiotaki, K.N., Sakellis, E., Kouvelos, E.P., Papageorgiou, S. and Katsaros, F., Fabrication of antibacterial poly(vinyl alcohol) nanocomposite films containing dendritic polymer functionalized multi-walled carbon nanotubes Frontiers in Materials, Volume 5, Article Number: 11, 2018 [doi]

Favvas, E.P., Katsaros, F.K., Papageorgiou, S.K., Sapalidis, A.A. and Mitropoulos, A.C., A review of the latest development of polyimide based membranes for CO2 separations Reactive and Functional Polymers, Volume 120, Pages: 104-130, 2017 [doi]

Tsiourvas, D., Papavasiliou, A., Deze, E.G., Papageorgiou, S.K., Katsaros, F.K., Romanos, G.E., Poulakis, E., Philippopoulos, C.J., Xin, Q. and Cool, P., A green route to copper loaded silica nanoparticles using hyperbranched poly(Ethylene imine) as a biomimetic template: Application in heterogeneous catalysis Catalysts, Volume 7, Article Number: 390, 2017 [doi]

Athanasekou, C., Romanos, G.E., Papageorgiou, S.K., Manolis, G.K., Katsaros, F. and Falaras, P., Photocatalytic degradation of hexavalent chromium emerging contaminant via advanced titanium dioxide nanostructures Chemical Engineering Journal, Volume 318, Pages: 171-180, 2017 [doi]

Tsoufis, T., Katsaros, F., Kooi, B.J., Bletsa, E., Papageorgiou, S., Deligiannakis, Y. and Panagiotopoulos, I., Halloysite nanotube-magnetic iron oxide nanoparticle hybrids for the rapid catalytic decomposition of pentachlorophenol Chemical Engineering Journal, Volume 313, Pages: 466-474, 2017 [doi]

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