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Seminar Announcement
Title: From Particle Surface Phenomena to Potential Energy Future Sources
Speaker: Dr. Bing Guo, Department of Mechanical Engineering, Texas A&M University, USA
Time: 10:00 am, June 7, 2011 (Tuesday)
Venue: Room 305, Institute for Thermal Power Engineering (热能工程研究所305会议室)
Abstract
Aerosol synthesis of functional particulate materials is both a mature practice of manufacturing and a tool of innovation used in research. Commodities such as carbon black, pigmentary TiO2 and fumed SiO2 are routinely manufactured via aerosol processes. Aerosol technology is attractive for synthesis of particulate materials as it involves fewer steps, easier particle retrieval and fewer liquid byproducts than wet-chemistry technologies. Innovative aerosol synthesis techniques have emerged for the production of various functional particulate materials, such as BaCO3 for NOx storage-reduction, ε-WO3 for sensing of organic vapors, and SiO2-coated TiO2 particles for advanced pigments. There is also active research on using aerosol synthesis to solve the energy problem, an eminent challenge that faces mankind.
Effects related to the particle surface play important roles in particle formation, particle functionality, and the potential health/environmental effects of particulate materials. In this lecture we will review the interplay of surface energy and polymorphism, elemental partitioning during phase change in complex metal oxide systems, and surface reductive capability of graphitic carbon nanomaterials. We will also discuss the implications of these phenomena in aerosol synthesis and assessment of safety hazard for particulate materials, and draw a connection between the phenomena on tiny particles and potential sources of future energy.
Biography
Dr. Bing Guo is currently an Assistant Professor of Mechanical Engineering at Texas A&M University. He received his doctor’s degree in Thermal Engineering from Tsinghua University in 1998. Prior to joining the faculty at TAMU, he was a Staff Research Associate and part-time Lecturer at University of California, Davis. Before that, he briefly held a Lecturer’s position at Tsinghua University. His research interest includes thermal-fluids analysis, aerosol formation, characterization & sampling, toxicity assessment of particulate materials, and modeling of aerosol transport and deposition. He has conducted research in coal/biomass gasification, heavy metal pollutant formation in flames, material synthesis using flame processes, gas sensing using nanoparticles, toxicity of nanoparticles, bioaerosol sampling, and in-door air quality modeling. He has frequently served as reviewer for journals such as Aerosol Science and Technology, as research proposal reviewer for U.S. and other governmental agencies, and as consultant for various agencies on air sampling. He has published 30 peer-reviewed papers, and given numerous contributed or invited talks at scientific conferences.
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