Dionysios (DION) Demetriou Dionysiou Associate Professor Director, Environmental Engineering and Science Graduate Program Ph.D. 2001 University of Cincinnati Environmental Engineering

Contact Information

Personal home page E-mail:dionysios.d.dionysiou@uc.edu Office :780 ERC Tel     :(513) 556-0724 Fax    :(513) 556-2599

Areas of Interest

Professor Dionysiou performs research in the fields of (i) Advanced oxidation technologies for water treatment, (ii) drinking water treatment and purification, (iii) physicochemical phenomena on particle-water interfaces, (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) environmental nanotechnology.  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.

Publications

• Suzanne K. Lunsford, Hyeok Choi, Jelynn Stinson, Amber Yeary, and Dionysios D. Dionysiou, Voltammetric Determination of Catechol using a Sonogel Carbon Electrode Modified with Nanostructured Titanium Dioxide, Talanta, In Press, Available on line March 12, 2007.

• Qiujing Yang, Hyeok Choi, and Dionysios D. Dionysiou, Nanocrystalline Cobalt Oxide Immobilized on Titanium Dioxide Nanoparticles for the Heterogeneous Activation of Peroxymonosulfate, Applied Catalysis B: Environmental, In Press, 174 (2007) 170-178, Available online February 6 2007.

• Rachel Copeland, Darren Lytle, and Dionysios D. Dionysiou, Arsenic Desorption from Drinking Water Distribution System Solids, Environmental Monitoring and Assessment 127 (1-3) (2007) 523-535.

• Erick R. Bandala, Miguel A. Peláez, Dionysios D. Dionysiou, Silvia Gelover, Diana Macías, Degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D) using Cobalt-Peroxymonosulfate in Fenton-like Process, Journal of Photochemistry and Photobiology A-Chemistry 186 (2/3) (2007) 357-363.

• Yongjun Chen and Dionysios D. Dionysiou, A Comparative Study on Physicochemical Properties and Photocatalytic Behavior of Macroporous TiO2-P25 Composite Films and Macroporous TiO2 Films Coated on Stainless Steel Substrate, Applied Catalysis A: General 317 (1) (2007), 129-137.

• Elias Stathatos, Hyeok Choi and Dionysios D. Dionysiou, Simple Procedure of Making Room Temperature Mesoporous TiO2 Films with High Purity and Enhanced Photocatalytic Activity, Environmental Engineering Science 24  (1) (2007), 13-20.

• Hyeok Choi, Yong-Jin Kim, Rajender S. Varma and Dionysios D. Dionysiou, Thermally Stable Nanocrystalline TiO2 Photocatalysts Prepared by Sol-Gel Method Modified with Water Immiscible Room Temperature Ionic Liquid and Nonionic Surfactant Templates, Chemistry of Materials 18 (2006) 5377-5384.

• Mark R. Wiesner, Gregory V. Lowry, Pedro Alvarez, Dionysios D. Dionysiou, and Pratim Biswas, Assessing the Risks of Manufactured Nanomaterials, Environmental Science and Technology 40 (14) (2006) 4336-4345.

• Hyeok Choi, Anna Sofranko and Dionysios D. Dionysiou, Nanocrystalline TiO2 Photocatalytic Membranes with a Hierarchical Mesoporous Multilayers: Synthesis, Characterization, and Multifunction, Advanced Functional Materials 16 (8) (2006) 1067-1074.

• 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.

• 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.

• Erick R. Bandala, Dolorez Martinez, Evaristo Martinez, and Dionysios D. Dionysiou, Degradation of Microcystin-LR by Fenton and Photo-Fenton Processes, TOXICON 43 (7) (2004) 829-832.

• 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.

Research Project and Grants