时间:4月20日(周五)15:00
地点:科技创新大楼C501
报告人:洪勋
Single atom alloys and their catalytic properties
Abstract:The properties of noble metals may greatly differ from their bulk as the size reduces to subnanometer or atomic level. In this talk, I will introduce the recent research on the synthesis of novel bimetallic catalysts at atomic scale in my group. It includes the synthesis of ordered porous Pd octahedra covered with monolayer Ru atoms[1], atomically dispersed Ru on ultrathin Pd Nanoribbons[2], Cu-Pt dual sites alloyed ultrathin Pd nanorings[3], ultrathin Pd nanomeshes[4], and epitaxial growth of atomic layer Ru on ultrathin Pd nanosheets. Importantly, the above novel bimetallic structures exhibited excellent catalytic properties in terms of semihydrogenation of alkynes, chemoselective hydrogenation, hydrogen evolution reaction and oxygen evolution reaction. More recently, we have developed a general method for the synthesis of amorphous noble metal and metal oxide nanosheets.
Keywords:Noble metal,Bimetal,Single atoms, Amorphous
Reference:
[1] Ge. J,Hong. X,*Li. Y. D* et al. J. Am. Chem. Soc. 2015, 137, 14566.
[2] Ge. J,Hong. X,*Li. Y. D* et al. J. Am. Chem. Soc. 2016, 138, 13850.
[2] Chao. T, Jiang. B,*Hong. X,*Li. Y. D* et al. Angew. Chem. Int. Ed., 2017, 56, 16047.
[4] Ge. J,Hong. X,*Li. Y. D* et al. Angew. Chem. Int. Ed., 2018, 57, .3435
个人简介:
2018年至今,中国科学技术大学化学系,副教授
2014年至2017年,中国科学技术大学化学系,特任副研究员
2012年-2014年,新加坡南洋理工大学博士后(Postdoctoral Research Fellows,合作导师:Professor Hua ZHANG)
2010年-2012年,清华大学化学系博士后 (合作导师:李亚栋 院士)
2004年-2010年,中国科学技术大学物理系,获凝聚态物理博士学位(导师:王冠中 教授)
2000年-2004年,中国科学技术大学物理系,获理学学士学位
主要从事贵金属纳米材料的合成和性能研究,已在J. Am. Chem. Soc., Angew. Chem., Adv. Mater等学术期刊发表论文30余篇。入选中国化学会2016-2018“青年人才托举工程”,2018年中科院青促会成员。
研究方向:
(1)贵金属及合金纳米材料的合成与组装。
(2)纳米及负载单原子催化材料的制备与表征、电催化反应、有机催化反应。