Professor S. Sotiropoulos has more than 25 years of experience in electrochemistry, specializing in electrocatalysis, photoelectrocatalysis and electroanalysis. He is the author of more than 97 refereed journal publications (h-index=28). He has participated in/or directed more than 20 Greek, UK and International Research Projects and has supervised 7 PhD theses. He has been serving as Editor for Electrochimica Acta (Elsevier; IF: 4.8) since 2011. Publications relevant to project activities include: “Electrocatalysts Prepared by Galvanic Replacement” A.Papaderakis et al Catalysts (2017) 7(3), 80; “Oxygen Evolution at IrO2-Shell-Ir-Ni Core Electrodes Prepared by Galvanic Replacement” Papaderakis, A. et al (2016) Journal of Physical Chemistry C, 120 (36), 19995; “Electrochemical and bio-electrochemical treatment of baker’s yeast effluents” Liakos, T.I., Sotiropoulos, S., Lazaridis, N.K. (2017) Journal of Environmental Chemical Engineering, 5 (1); “Photoelectrocatalytic oxidation of organics under visible light illumination: A short review” Karanasios, N. et al (2015) Current Organic Chemistry, 19 (6), 512; “Methanol oxidation at Pt-Cu, Pt-Ni, and Pt-Co electrode coatings prepared by a galvanic replacement process” Papadimitriou, S. et al (2010) Journal of Physical Chemistry C, 114 (11) 5217 Research projects relevant to INVALOR include: “Optimization of Seawater Electrodialysis for “Athomer” Renal Spray Preparation”, GGSRT, 2018-2021 (PI); “Integrated Treatment of High Molasses Wastewater for Recovery of High Added Valuew Products and Reduction of Pollutant Loading”, GSRT, 2013-2016; “Nanomaterials for Photochemical and Photoelectrochemical Purification Processes”, NATO SfP, 2007-2011 (PI); “Preparation and Characterisation of Porous Electrocatalytic and Photocatalytic Coatings”, NATO SfP, 2002-2007 (PI); “Photo-electro-catalytic TiO2 and WO3 coatings for the destruction of pollutants in aqueous media”, 2005-2007, GSRT (PI).