9/23(一)專題演講公告

演講人陳燦耀   教授

服務單位國立清華大學工程與系統科學系

演講題目

Next generation heterogeneous catalysis: structure confinement effects from nanometered to atomic scaled regimes

演講時間108923(星期一)早上910

演講地點工綜館203國際演講廳

個人學歷

國立清華大學 / 工程與系統科學系 / 博士

國立成功大學 / 材料科學及工程學系 / 學士

個人經歷

國立清華大學 / 工程與系統科學系 / 副教授兼副系主任 (現職)

國立清華大學 / 工程與系統科學系 / 助理教授

高通微機電顯示器製造有限公司 / 資深工程師

台灣積體電路製造有限公司 / 主任工程師

國立清華大學 / 工程與系統科學系 / 博士後研究員

演講摘要

Surface decoration is an effective assessment for improving chemical stability of nanocatalysts. In this study, we demonstrate that the dimension of the surface decoration can be manipulated down to atomic scale. Apart from using noble metals, atomic scaled Pt clusters were employed to improve the oxygen reduction reaction performance of catalysts. Those clusters are decorated in surface defect regions of Cocore-Pdshell (Co-Pd) nanoparticles by using self-aligned nanocrystal growth followed by atomic quench with strong reduction agent. They localize electrons from neighboring atoms and boost activity of Co-Pd NP in ORR. With a proper reaction time and loading control, the Pt cluster decorated Co - Pd nanoparticles enhance its mass activity by 340 times as compared to that of commercial Pt catalysts in an alkaline electrolyte of 1.0M KOH.

20190923