| 报告题目 | Metallic Nanoparticles Assembled on Graphene as Enhanced Catalyst for Oxygen Reduction Reaction |
| 报告人 | Prof. Shouheng Sun |
| 报告人单位 | Chemistry Department, Brown University |
| 报告时间 | 2013-07-13 |
| 报告地点 | 合肥微尺度物质科学国家实验室一楼科技展厅 |
| 主办单位 | 合肥微尺度物质科学国家实验室、中国科学技术大学化学与材料科学学院 |
| 报告介绍 | Abstract：
FePt and Co/CoO nanoparticles (NPs) were synthesized and assembled on graphene (G) by a solution-phase self-assembly method. The G-NP catalysts showed much enhanced catalytic activity and durability for oxygen reduction reaction (ORR). The G-FePt NPs were more active than the carbon supported FePt (C-FePt) NPs and the commercial C-Pt NPs for ORR in 0.1 M HClO4. The G-Co/CoO showed CoO thickness dependent catalytic activity for ORR in O2-saturated 0.1 M KOH solution with 1 nm CoO shell exhibiting the highest activity. The optimized G-Co/CoO NPs had comparative activity and better stability than the commercial C-Pt NPs. The work demonstrates the great potentials of self-assembly of monodisperse NPs on G for practical ORR and other energy conversion reactions in both acid and alkaline media.
Biosketch:
Shouheng Sun received a B.S. degree from Sichuan University in 1984, a M.S. degree in Inorganic Chemistry from Nanjing University in 1987, and a Ph.D. degree in Chemistry from Brown University in 1996. He was a postdoctoral fellow from 1996-1998 and a research staff member from 1998-2004 at the IBM T. J. Watson Research Center. He joined the Chemistry Department of Brown University as a tenured Associate Professor in 2005 and was promoted to full Professor in 2007. Professor Sun has received many prestigious awards and honors, which include Cheung Kong Scholar Chair Professor, Nanjing University, China (2010-2013), ranked 31 in Thomson Reuters' Top 100 Chemists by citation impact from 2000-2010 (2011), Potter Prize Advisor Award, Brown University (2009), Overseas Outstanding Scholar (B), National Science Foundation of China (2004), Outstanding Technical Achievement Award on "Two-component nanostructured materials" (IBM, 2003), Award for Leadership in Nanoparticle Research, Business Communication Co, Inc. (2003), and Scientific Accomplishment Award (IBM, 2000). Currently, he serves as the Co-Director of Brown's Institute for Molecular and Nanoscale Innovation (IMNI) and an associate editor to the journal Nanoscale (RSC). He also serves as (International) Editorial Advisory Board Members for Particle & Particle Systems Characterization (from 2012), Nano Letters (from 2010), Nano Today (from 2009), and Nano Research (from 2008). |
