邀请人：霍峰蔚 教授

报告时间：2023年4月24日（星期一）9:00

报告地点：科技D楼1903会议室

报告一：Phase Engineering of Nanomaterials (PEN)

报告人：张 华教授

报告摘要

Phase Engineering of Nanomaterials (PEN)

Hua Zhang

Department of Chemistry, City University of Hong Kong, Hong Kong, China

Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China

Shenzhen Research Institute, City University of Hong Kong, Shenzhen, 518057, China

E-mail:hua.zhang@cityu.edu.hk

Website:https://www.cityu.edu.hk/chem/people/academic-staff/HZHANG;https://scholars.cityu.edu.hk/en/persons/hua-zhang(8f4e048e-884d-4f19-b2b4-ca4d3d53c515).html

Google Scholar:https://scholar.google.com/citations?user=Cgo45S8AAAAJ&hl=en

Abstract

In this talk, I will summarize the recent research on phase engineering of nanomaterials (PEN) in my group, particularly focusing on the rational design and synthesis of novel nanomaterials with unconventional phases for various promising applications. For example, by using wet-chemical methods, for the first time, we have successfully prepared novel Au nanostructures (e.g., the hexagonal-close packed (hcp) 2H-Au nanosheets, 4H-Au nanoribbons, and crystal-phase heterostructured 4H/fccandfcc/2H/fccheterophase Au nanorods), epitaxially grown metal nanostructures on the aforementioned unconventional Au nanostructures and 2H-Pd nanoparticles, and amorphous/crystalline heterophase Pd, PdCu, Rh and Rh alloy nanosheets. In addition, by using gas-solid reactions, metastable 1T'-phase group VI transition metal dichalcogenides (TMDs),e.g., WS₂, WSe₂, MoS₂, MoSe₂, WS_2xSe_2(1-x)and MoS_2xSe_2(1-x), have been prepared. Moreover, the salt-assisted 2H-to-1T' phase transformation of TMDs have been achieved, and the phase transformation of TMDs during our developed electrochemical Li-intercalation process has been observed. Impressively, the lithiation-induced amorphization of Pd₃P₂S₈has been achieved. Currently, my group focuses on the investigation of phase-dependent physicochemical properties and applications in catalysis, (opto-)electronic devices, clean energy, chemical and biosensors, surface enhanced Raman scattering, photothermal therapy,etc., which we believe is quite unique and very important not only in fundamental studies, but also in future practical applications. Importantly, the concepts of phase engineering of nanomaterials (PEN), crystal-phase heterostructures, and heterophase nanomaterials are proposed.

Keywords:Phase engineering of nanomaterials (PEN); Noble metal nanomaterials; Transition metal dichalcogenides; Crystal phases; Unconventional phases; Amorphous phase; Crystal-phase heterostructures; Heterophase nanomaterials

个人简介

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 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. In 2019, he joined the Department of Chemistry in City University of Hong Kong as a Chair Professor, and currently he is the Herman Hu Chair Professor of Nanomaterials.

He has published6invited book chapters,80+patent applications (includinggranted 1 China patent,1 European patent,3 Singapore patents, and10 US patents), and over550papers. Some of his papers have been published inScience(1),Nat. Mater.(3),Nat. Chem.(5),Nat. Catal.(2),Nat. Rev. Mater.(2),Nat. Rev. Chem.(1),Nat. Commun.(11),Sci. Adv.(2),Nat. Protocols(1),Chem. Rev.(3),Chem. Soc. Rev.(16),Acc. Chem. Res.(3),J. Am. Chem. Soc.(28),Angew. Chem. Int. Ed.(29),Adv. Mater.(72),Energy Environ. Sci(12),Mater. Today(1),Adv. Energy Mater.(9),Chem(3),Natl. Sci. Rev.(4),ACS Nano(33),Nano Lett.(17),Adv. Funct. Mater.(5),Nano Energy(6),Energy Storage Mater.(1),ACS Catal.(1),Small(70),Small Methods(3),Nano-Micro Lett.(1),Mater. Horizons(2),Biomater.(1),Biosens. Bioelectron.(2),J. Mater. Chem. A(4),Matter(2),NPG Asia Mater.(1),J. Hazard. Mater.(1),Nanoscale Horizons(2),Appl. Mater. Today(1),J. Mater. Chem.(9),etc.As atApr. 2023, the total cited times are over111,800with H-index of167(Web of Science), and over130,600with H-index of178(Google Scholar). He has been invited to give more than300Plenary, Keynote or Invited Talks in international conferences, universities and institutes. He has organized several tens of international conferences and served as the Conference (Co-)Chair or Symposium Chair.

He is the co-Editor-in-Chief ofSmartMat(2020-) and co-Chairman of the Editorial Board ofChemNanoMat(2015-), and sits on the Advisory Board ofChemical Society Reviews(2012-2019),Aggregate(2020-present),Chemical Journal of Chinese Universities(2019-),Materials Chemistry Frontiers(2016-),Matter(2019-),Nanoscale(2012-),Nanoscale Horizons(2015-) andNPG Asia Materials(2018-), the Editorial Advisory Board ofACS Nano(2014-),Advanced Functional Materials(2018-),Advanced Materials(2019-),Small(2012-),ACS Appl. Mater. Interfaces(2014-2019),Chem. Mater.(2014-2019) andNanofabrication(2012-2020), the Editorial Board of2D Materials(2022-),ACS Omega(2016-),Acta Physico-Chimica Sinica(2020-),Applied Materials Today(2015-),Carbon(2013-),CHEM(2016-),Chemistry-Methods(2020-),Chinese Science Bulletin(2014-),Electron(2023-),Energy Storage Materials(2015-),EnergyChem(2018-),eScience(2020-),Graphene Technology(2016-),Materials Today Energy(2016-),NANO(2007-2020),National Science Review(2023-),Nano Convergence(2020-),npj 2D Materials and Applications(2016-),Research(2021),The Innovation(2020-),Transactions of Tianjin University(2019), andScience China Materials(2014-), the International Advisory Board ofChemistry – An Asian Journal(2018-), the International Advisory Board ofMaterials Research Express(2014-2016) and the International Editorial Board ofChemPlusChem(2012-2015), and the Scientific Advisory Board ofSmall Methods(2017-).

In2020, he was elected as aForeign Fellowof the European Academy of Sciences (EurASc). In2015, he was elected as anAcademicianof the Asia Pacific Academy of Materials (APAM). In Nov.2014, he was elected as aFellowof the Royal Society of Chemistry (FRSC). In2016, he was listed in the top 300 most cited researchers in the field of materials science and engineering (Elsevier Scopus). In2022, he was listed in the "Highly Cited Researchers" inChemistry,Environment and Ecology, andMaterials Science(Clarivate Analytics). In2015-2021, he was listed in the "Highly Cited Researchers" inChemistryandMaterials Science(Clarivate Analytics/Thomson Reuters). In2015, he was listed asone of 19“Hottest Researchers of Today” in the world in theWorld’s Most Influential Scientific Minds 2015(Thomson Reuters,2015). In2014, he was listed in the "Highly Cited Researchers 2014" inMaterials Science, and also listed asone of 17“Hottest Researchers of Today” andNo. 1inMaterials and Morein the world in theWorld’s Most Influential Scientific Minds 2014(Thomson Reuters,2014). Moreover, he got theOutstanding Research Award(2022, City University of Hong Kong),President’s Award(2021, City University of Hong Kong),Young Investigator Award(Young Giants of Nanoscience2016, Hong Kong),Vice-Chancellor’s International Scholar Award(University of Wollongong, Australia,2016),ACS Nano Lectureship Award(2015),World Cultural Council (WCC) Special Recognition Award(2013), theONASSIS Foundation Lectureship(Greece,2013),Asian Rising Stars(15^thAsian Chemical Congress,2013),SMALL Young Innovator Award(Wiley-VCH,2012) andNanyang Award for Research Excellence(2011).

Dr. Zhang’s research is highly interdisciplinary. His current research interests focus on phase engineering of nanomaterials (PEN) and controlled epitaxial growth of heterostructures, including the synthesis of ultrathin two-dimensional nanomaterials (e.g., metal nanosheets, graphene, metal dichalcogenides, metal-organic frameworks, covalent organic frameworks,etc.), novel metallic and semiconducting nanomaterials, novel amorphous nanomaterials, and their hybrid composites for various applications, such as catalysis, clean energy, (opto-)electronic devices, chemical and biosensors, and water remediation.

报告二：Covalent Organic Frameworks as Promising Platforms for Diverse Applications

报告人：张其春教授

报告摘要

Covalent Organic Frameworks as Promising Platforms for Diverse Applications

Qichun Zhang

Department of Materials Science and Engineering, Department of Chemistry & Center of Super-Diamond and Advanced Films (COSDAF),

City University of Hong Kong, Hong Kong, P.R China

Email:qiczhang@cityu.edu.hk

Since Yaghi et al. reported the first covalent organic frameworks (COFs) in 2005, COFs have caused many scientists' interest in both fundamental research (synthesis, properties, theoretical simulation, etc.) and possible applications (gas absorption/separation, catalysis, energy-related devices, sensing, imaging, and so on). In this talk, I will present our recent progress on the preparation of novel COFs as well as their diverse applications in optoelectrical devices.

Key Words: COFs, synthesis, Characterization, diverse application

个人简介

Dr. Qichun Zhang received his B.S. at Nanjing University in China in 1992, MS in physical organic chemistry (organic solid lab) at Institute of Chemistry, Chinese Academy of Sciences in 1998, MS in organic chemistry at University of California, Los Angeles (USA, 2003), and completed his Ph.D. in chemistry at University of California Riverside in 2007. Then, he joined Prof. Kanatzidis’ group at Northwestern University as a Postdoctoral Fellow (Oct. 2007-Dec. 2008). Since Jan. 2009, he joined School of Materials Science and Engineering at Nanyang Technological University (NTU, Singapore) as an Assistant Professor. On Mar 1st, 2014, he has promoted to Associate Professor with tenure. On Sep 1^st2020, he moved to Department of Materials Science and Engineering at City University of Hong Kong as a full professor. Currently, he is an associate editor of J. Solid State Chemistry and Susmat, the International Advisory Board member of Chemistry - An Asian Journal, the Advisory board member of Journal of Materials Chemistry C, the Advisory board member of Materials Chemistry Frontiers, the Advisory board member of Inorganic Chemistry Frontiers, the Advisory board member of Aggerate, the Advisory board member of Materials Advances, and the Advisory board member of Science Chinese Materials. Also, he is Guest Editors of CCS Chemistry (2020-2021), Advanced Materials (2020-2021), J Mater Chem C (2020-2021, 2017-2018), Mater. Chem Front (2019-2020), Inorganic Chemistry Frontiers (2016-2017, 2017-2018). From 2018 to 2021, he has been recognized as one of highly-cited researchers (top 1%) in cross-field in Clarivate Analytics and in 2022,he was recognized as one of highly-cited researchers (top 1%) in Materials Chemistry in Clarivate Analytics. He is a fellow of the Royal Society of Chemistry. Currently, his research focuses on carbon-rich conjugated materials and their applications. Till now, he has published ＞495 papers and 10 patents (H-index: 104).