October 12, Junhong Chen, University of Wisconsin-Milwaukee
Refreshments served at 2:45 PM
Graphene-based Hybrid Nanomaterials for Sensing and Energy Applications
Abstract: Hybrid nanomaterials represent a new class of materials that could potentially display properties beyond those of constituent nanocomponents. For instance, hybrid nanomaterials with nanoparticles (NPs) distributing on the surface of graphene/reduced graphene oxide could display not only unique properties of NPs and those of graphene, but also additional novel properties due to electronic interactions between the NP and the graphene. This talk will introduce an electrostatic method to assemble aerosol and colloidal NPs onto graphene, an ultrasonic nebulization method to produce crumpled graphene-NP hybrid balls, and a polymerization method to produce nitrogen-doped graphene-NP hybrids. Example applications of resulting hybrid nanomaterials will be presented for the detection of chemical and biological species and for energy storage and conversion.
Biography: Dr. Chen is currently a Professor of Mechanical Engineering at the University of Wisconsin-Milwaukee (UWM). He is also the Director of NSF I/UCRC on Water Equipment & Policy and the founder of NanoAffix Science, LLC. Dr. Chen received his B.E. degree (in Thermal Engineering) in 1995 from Tongji University, and his M.S. and Ph.D. degrees (both in Mechanical Engineering) in 2000 and 2002, respectively, from University of Minnesota. Prior to joining UWM in 2003, he was a postdoctoral scholar in Chemical Engineering at California Institute of Technology. He was promoted to Associate Professor and Professor in 2008 and 2011, respectively. His current research focuses on nanocarbon-based hybrid nanomaterials for sustainable energy and environment. His research excellence was recognized by the 2008 Graduate School/UWM Foundation Research Award and the 2012 UWM College of Engineering & Applied Science Research Excellence Award.
Faculty Host: Xin Zhang