报告人：Prof. John Texter
时间：2016年6月13日（周一）上午 9: 30
地点：图书馆中心会议室
报告内容：Hydrothermal carbonization is being reborn as an approach to harnessing new sources of energy and decreasing the carbon footprint in developing sustainable fuels, feedstocks for pyrolysis and gasification, and a sustainable source of carbon advanced materials. This kind of processing is highly green and is a sustainable approach for replacing petrochemical feedstocks. In this presentation we focus on using HTC to form porous carbon advanced materials. The resulting hydrothermal carbons (HTC) are examined for their aqueous dispersibility using a nanolatex (NL) based on an ionic liquid imidazolium acrylate monomer. The imidazolium moiety provides ？-？ overlap bonding with graphene surfaces presented by the HTC materials, and those distals to the HTC surfaces are highly hydrated and provide o**otic brush dispersion stabilization. The most porous HTC is found to produce an optical extinction in the visible about half of that exhibited by single wall carbon nanotubes. The HTC produced hydrothermally from glucose and melamine appears to be a carbon nitride material that is nearly electrically insulating while appreciably thermally conducting. A follow up study of HTC formed from glucose and ovalbumin mixtures produces monolithic porous carbon that is highly friable. Aqueous dispersion processing with NL yields highly stable dispersions of HTC nanorods and nanorod clusters, 10-15 nm in diameter, with optical extinction characteristic of MWCNT and graphene.
报告人简介：John Texter is Professor of Polymer and Coating Technology at Eastern Michigan University. He has been Editor-in-Chief of the Journal of Dispersion Science and Technology, Associate Editor of the Journal of Nanoparticle Research, and Section Editor for Applications of Current Opinion in Colloid and Interface Science. He is an inventor, editor, and author of over 200 publications including five books, 46 issued U.S. patents, and numerous research and review articles. His research focuses on stimuli responsive polymers, particles, and materials and the general area of dispersion science and practice.