Associate Professor of Environmental Engineering Department of Civil and Environmental Engineering 765 Baldwin Hall University of Cincinnati Cincinnati, Ohio 45221-0071 Tel: 556-0724 (O); FAX: (513) 556-2599 (O) E-mail: dionysios.d.dionysiou@uc.edu Office Number: 780 Engineering Research Center

Education

• Ph.D. - Environmental Engineering - University of Cincinnati, Cincinnati, Ohio, 2001
• M.S. - Chemical Engineering - Tufts University, Medford, Massachusetts, 1995
• Diploma - Chemical Engineering - National Technical University of Athens (N.T.U.A.), (B.S./M.S.) Greece, 1991

Employment

• Associate Professor of Environmental Engineering, University of Cincinnati - Sep. 2005-present.
• Assistant Professor of Environmental Engineering, University of Cincinnati - 9/2000-8/2005.
• Research Engineer, W. R. Grace, Cambridge, Massachusetts, 1994 -1995

Areas of Interests

Professor Dionysiou performs research in the fields of (i) Advanced oxidation technologies and chemical oxidation for water treatment, (ii) drinking water treatment and purification, (iii) environmental nanotechnology, (iv) transition-metal oxidation and reverse electron transfer reactions, (v) the use of ionic liquids in environmental applications, (vi) destruction of biological toxins in water, and (vii) physicochemical phenomena on particle-water interfaces. At the University of Cincinnati, Professor Dionysiou teaches graduate courses in the fields of (i) Advanced Unit Operations for the Treatment of Drinking Water and Wastewater, (ii) Physical-Chemical Processes for Water Quality Control, and (iii) Advanced Oxidation Technologies and Nanotechnologies. He also teaches a graduate level laboratory course on Unit Operations and Process Monitoring for the Treatment of Polluted Water and Air and an undergraduate course in Environmental Engineering Fundamentals and Process Design.

Representative Recent Published Works

• Hyeok Choi, Elias Stathatos, and Dionysios D. Dionysiou, Sol-gel Preparation of Mesoporous Photocatalytic TiO2 Films and TiO2/Al2O3 Composite Membranes for Environmental Applications, Applied Catalysis B: Environmental 63 (1/2) (2006) 60-67.
• George P. Anipsitakis, Dionysios D. Dionysiou and Michael A. Gonzalez, Cobalt-mediated Activation of Peroxymonosulfate and Sulfate Radical Attack on Phenolic Compounds. Implications of Chloride Ions, Environmental Science and Technology 40 (3) (2006) 1000-1007.
• Yongjun Chen and Dionysios D. Dionysiou, TiO2 Photocatalytic Films on Stainless Steel: The Role of Degussa P-25 in Modified Sol-Gel Methods, Applied Catalysis B: Environmental 62 (3/4) (2006) 255-264.
• Yongjun Chen and Dionysios D. Dionysiou, Effect of Calcination Temperature on the Photocatalytic Activity and Adhesion of TiO2 Films Prepared by the P-25 Powder-Modified Sol Gel Method, Journal of Molecular Catalysis A: Chemical 244 (1/2) (2006) 73-82.
• George P. Anipsitakis, Elias Stathatos and Dionysios D. Dionysiou, Heterogeneous Activation of Oxone using Co3O4, Journal of Physical Chemistry B: 109, issue 27 (2005) 13052-13055.
• Hyeok Choi, Kai Zhang, Dionysios D. Dionysiou, Daniel B. Oerther, and George A. Sorial, Influence of Cross-flow Velocity on Membrane Performance During Filtration of Biological Suspension, Journal of Membrane Science 248 (1-2) (2005) 189-199.
• Arturo A. Burbano, Dionysios D. Dionysiou, Makram T. Suidan, and Teri L. Richardson, Oxidation Kinetics and Effect of pH on the Degradation of MTBE with Fenton Reagent, Water Research 39 (1) (2005) 107-118.
• George P. Anipsitakis and Dionysios D. Dionysiou, Transition Metal/UV-based Advanced Oxidation Technologies for Water Decontamination, Applied Catalysis B: Environmental, 54 (3) (2004) 155-163.
• George P. Anipsitakis and Dionysios D. Dionysiou, Radical Generation by the Interaction of Transition Metals with Common Oxidants, Environmental Science and Technology 38 (2004) 3705-3712.
• Kyesang Yoo, Hyeok Choi, and Dionysios D. Dionysiou, Ionic Liquid Assisted Preparation of Anatase Nanostructured TiO2 Particles with High Surface Area, Chemical Communications 2004 (17), 2000-2001.
• Qiaolin Yang and Dionysios D. Dionysiou, Photolytic Degradation of Chlorinated Phenols in Room Temperature Ionic Liquids, J. Photochemistry & Photobiology, A: Chemistry 165 (1-3) (2004) 229-240.
• Qianrui Wang, Daekeun Kim, Dionysios D. Dionysiou, George A. Sorial and Dennis Timberlake, Mercury in Aquatic Systems: Sources of Pollution and Remedial Strategies, Environmental Pollution 131 (2), (2004), 323-336.

Representative Current and Recent Research Projects

• "CAREER: Hydroxyl Radical and Sulfate Radical-Based Advanced Oxidation Nanotechnologies for the Destruction of Biological Toxins in Water, National Science Foundation, $400,000, July 1, 2005-June 30, 2010.
• "High Performance TiO2 Photocatalytic Coatings and membranes for the Purification, Disinfection and Recycle of Water and Air in Space Applications," National Aeronautics and Space Administration (NASA), $ 324,753, Jan. 12 2003-Jan. 11 2006; No cost extension until Jan. 11 2007.
• "NER (Nanotechnology Exploratory Research): Fabrication of TiO2 Nanoparticles and Films for Environmental Applications Using Ionic Liquid-Based Self Assembling Sol-Gel Methods," National Science Foundation, $ 100,000, June 1, 2003-May 31, 2005.
• "Cobalt/Oxone Advanced Oxidation Process," Du Pont De Nemours and Company, $22,000, Oct. 2003- Sep. 2004.

Selected Recent Awards and Honors