时   间：2016年11月15日（星期二）10:30

地   点：东一区教学楼A座十层1007会议室

主讲人：张华  教授 (新加坡南洋理工大学终身教授，材料科学系主任)

主办单位：必赢76net线路官网微尺度功能材料实验室＆初等教育学院

主讲人简介：

Dr. Hua Zhang obtained his B.S. and M.S. degrees at Nanjing University in China in 1992 and 1995, respectively, and completed his Ph.D. with Prof.Zhongfan Liu at Peking University in China in July 1998. He joined Prof.Frans C. De Schryver’s group at KatholiekeUniversiteit Leuven (KULeuven) in Belgium as a Research Associate in January 1999. Then he moved to Prof. Chad A. Mirkin’s group at Northwestern University as a Postdoctoral Fellow in July 2001. He started to work at NanoInk Inc. (USA) as a Research Scientist/Chemist in August 2003. After that, he worked as a Senior Research Scientist at Institute of Bioengineering and Nanotechnology in Singapore from November 2005 to July 2006. Then he joined the School of Materials Science and Engineering in Nanyang Technological University (NTU) as an Assistant Professor. He was promoted to a tenured Associate Professor on March 1, 2011, and Full Professor on Sept. 1, 2013.

讲座介绍：

In this talk, I will summarize the recent research on the crystal phase-controlled synthesis of novel noble metal nanomaterials in my group . It includes the first-time synthesis of hexagonal-close packed (hcp) Au nanosheets (AuSSs) on graphene oxide,surface-induced phase transformation of AuSSs from hcp to face-centered cubic (fcc) structures, alternating hcp/fccAu square-like plates from AuSSs, ultrathin Au nanowires containing hcp phase, synthesis of ultrathin fccAu@Pt and Au@Pd rhombic nanoplates through the epitaxial growth of Pt and Pd on the hcpAuSSs, respectively, the first-time synthesis of 4H hexagonal phase Au nanoribbons (NRBs) and their phase transformation to fccAu RNBs,the epitaxial growth of Ag, Pt,Pd, PtAg, PdAg, PtPdAg, Rh, Ir, Ru, Os and Cu on 4H Au NRBs to form the 4H/fccAu@metalcore–shell NRBs, and the synthesis of 4H/fcc-Au@metalsulfide core-shell NRBheterostructures. Currently, my group focuses on the crystal phase-based applications in catalysis, surface enhanced Raman scattering, waveguide, photothermal therapy, etc., which we believe are unique. Importantly, the concept of crystal phase noble metal heterostructures is proposed.