报告题目：Crystal Phase-Controlled Synthesis of Novel Noble Metal Nanomaterials
报告人: Prof. Hua ZHANG (张华), MSE, NTU
报告时间：2017年11月25日（周六）下午2:30
报告地点：能源与材料创新研究院102会议室
Abstract
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/fcc Au square-like plates from AuSSs, ultrathin Au nanowires containing hcp phase, synthesis of ultrathin fcc Au@Pt and Au@Pd rhombic nanoplates through the epitaxial growth of Pt and Pd on the hcp AuSSs, respectively, the first-time synthesis of 4H hexagonal phase Au nanoribbons (NRBs) and their phase transformation to fcc Au 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/fcc Au@metal core–shell NRBs, and the synthesis of 4H/fcc-Au@metal sulfide core-shell NRB heterostructures. Currently, my group focuses on the crystal phase-based properties and applications in catalysis, surface enhanced Raman scattering, waveguide, photothermal therapy, chemical and biosensing, etc., which we believe are unique and critically important not only fundamentally, but also practically. Importantly, the concepts of crystal phase noble metal heterostructures is proposed.
Keywords: Crystal Phase; Noble Metal Nanomaterials; Hexagonal-Close Packed; Face-Centered Cubic; Gold; Ultrathin Nanosheets
Brief CV
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 Katholieke Universiteit 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.
Dr. Zhang’s research is highly interdisciplinary. His current research interests focus on the synthesis of ultrathin two-dimensional nanomaterials (e.g. metal nanosheets, graphene, metal dichalcogenides, metal-organic frameworks, covalent organic frameworks, etc.) and their hybrid composites for applications in nano- and biosensors, clean energy, (opto-)electronic devices, catalysis, and water remediation; controlled synthesis, characterization and application of novel metallic and semiconducting nanomaterials, and epitaxial growth of heterostructures; scanning probe microscopy; lithography-based fabrication of surface structures from micro- to nanometer scale; self-assembly and self-organization of nano- and biomaterials; self-assembled monolayers; etc.
He has published 5 invited book chapters, 68 patent applications (including 8 granted US patents and 1 Singapore patent), and over 420 papers, among which 176 papers were published in IF>10 journals and 88 papers were published in 8<IF<10 journals. Some of his papers have been published in Science(1), Nat. Chem. (3), Nat. Rev. Mater. (1), Nat. Commun. (6), Sci. Adv. (1), Nat. Protocols (1), Chem. Rev. (1), Chem. Soc. Rev. (9), Acc. Chem. Res. (2), J. Am. Chem. Soc. (14), Angew. Chem. Int. Ed. (27), Adv. Mater. (41),etc. Based on Web of Science on Nov. 11, 2017, the total citation times of his papers are over 41,200 with H-index of 98.