info
Thank you for visiting my theme! Replace this with your message to visitors.

You are here: People / Speakers

AMA 2019 Speakers

Prof. Guoliang Li (Invited Speaker)

Institute of Process Engineering, CAS, China

Title of Speech: Self-Healing Anticorrosion Coatings based on Metal-Organic Framework Nanoparticles

Abstract: Utilization of self-healing nanocontainers with corrosion inhibitors is an efficient strategy for protecting metals from corrosion. However, self-healing coatings require the rapid release of these corrosion inhibitors to achieve an on-demand barrier on metal surface while avoiding unwanted leakage before the protective coatings are damaged. Zeolitic imidazole framework (ZIF) is an emerging class of functional materials with promising nanostructures and applications in biomedicine and materials science.  we present a dynamic protective coating system with self-healing anticorrosion function, based on pH-responsive ZIF nanoparticles. Due to the advantage of high content of corrosion inhibitor in the ZIF nanoparticles and its nature of pH-sensitivity, the ZIF-7 nanoparticles could quickly respond to the surrounding acid environment and release the linker as healing agent, led to a new barrier on scratched metal surfaces.
We also report well-defined ZIF@BTA nanoparticles with approximately 30 wt% benzotriazole inhibitors via a ligand exchange approach. The as-synthesized ZIF@BTA nanoparticles can rapidly release the BTA inhibitor onto scratched areas on metal surfaces, providing 99.4% inhibition efficiency under acidic conditions. Moreover, only limited inhibitor of BTA molecules was leached out (less than 4%) in a neutral environment. Furthermore, the ZIF@BTA nanoparticles were further distributed in the polymer matrix to prepare the self-healing anticorrosion coatings for corrosion resistance enhancement in an acidic environment. Electrochemical impedance spectroscopy (EIS) analysis was utilized to characterize the corrosion resistance.

Biography: Prof. Guoliang Li completed his PhD degree from National University of Singapore in polymer chemistry in 2011. After postdoctoral research at the Max-Planck Institute of Colloids and Interfaces as an Alexander von Humboldt research fellow (with Prof. Helmuth Möhwald and Prof. Dmitry Shchukin, 2011-2014) and at Kyoto University (with Prof. Susumu Kitagawa, 2014-2015), he joined Institute of Process Engineering of CAS as a Pioneer Hundred Talents Program professor in 2015. His research interests include adaptive polymer chemistry, nanoscience and nanotechnology, marine coatings, sustainable and environment-friendly materials and self-healing materials.

李国良,中国科学院过程工程研究所“百人计划”研究员。新加坡国立大学(National University of Singapore)获得博士学位(高分子化学与物理),2011-2014年在德国马普胶体与界面研究所 (Max Planck Institute of Colloids and Interfaces) 先后作为马普博士后和洪堡学者研究物理化学界面材料,2014-2015年在日本京都大学(Kyoto University)研究金属有机框架多孔聚合物。研究兴趣包括:自修复化学与材料, 超分子化学,自适应表界面材料及海洋防腐防污涂层等。目前已在相关领域发表SCI论文40余篇, SCI引用次数近2000次,h因子为23。曾获国家自费留学生奖学金(2010),德国洪堡学者(2012-2014),中国科学院“百人计划”(2015),北京市科技新星(2017)等荣誉奖项。