Investigations of Electric Field Effects on Cataly

活动信息

  • 开始时间：2023-07-04 20:50:00
  • 活动地点：线上
  • 主讲人：车芳琳

活动简介

<p>External electric fields can modify binding energies of reactive surface species and enhance catalytic performance of heterogeneously catalyzed reactions. Large electric fields can be experimentally generated through three ways: (1) internally over molecular length scales in (metallo-)enzyme and eolite catalytic active sites; (2) externally in gas/solid heterogeneous catalytic system, such as ultra-high vacuum conditions via scanning tunneling microscopy, field ion/emission microscopy, or flow reactor type via dielectric barrier discharge, coaxial capacitor, and microwave reactor; and (3) in an interfacial way at gas/liquid/solid triple phase boundary. Compared to experimental studies, theoretical work on electric field effects in catalysis is very limited due to the low efficiency of pure DFT calculations for predicting field-dependent energetics of catalytic reactions. This has led to an incomplete picture of how electric fields influence catalytic mechanisms at the atomic-scale and hinders the design and optimization of field-induced catalytic technologies.</p>

主讲人介绍

Dr. Fanglin Che joined in Chemical Engineering department at UMass Lowell as an Assistant Professor in September, 2019. Dr. Che earned her Ph.D. in Chemical Engineering at Washington State University in December, 2016, under the advisement of Prof. Jean-Sabin McEwen. From 2017 to 2018, she worked on electrocatalysis with Prof. Edward Sargent at University of Toronto as a Postdoctoral Researcher. From 2018 to 2019, she worked on microwave heating as a Postdoctoral Researcher in the Department of Chemical and Biomolecular Engineering at University of Delaware in Prof. Dionisios G. Vlachos’s laboratory. The overarching goal of Dr. Che’s research at UMass Lowell is to advance the knowledge of electrified interfacial phenomena via building data-driven multi-scale and multi-physics computational models. A special focus is placed on electric field-induced chemistry, electrocatalysis, plasma catalysis, and microwave catalysis. Her group is currently funded by NSF, Navy, and Army.