ICCMME 2019

2019 4th International Conference on Composite Materials and Material Engineering

January 19-22, 2019 | Tokyo, Japan

ICCMME2019 Keynote & Plenary Speakers

 

Prof. UMEMURA Kazuo

Tokyo University of Science, Japan

Biography: Dr. Kazuo Umemura is a full professor of Tokyo University of Science. His specialty is biophysics, especially, nanobioscience and nanobiotechnology. One of his recent interests is nanoscopic research of hybrids of biomolecules and carbon nanotubes (CNTs). Unique structures and physical/chemical properties of the hybrids are promising in biological applications such as nanobiosensors and drug delivery.
Dr. Umemura received his B.S. degree in Physics from Nagoya University. His M.S. and Ph.D. degrees were given from Tokyo Institute of Technology. After working at several institutes/universities as a researcher in Japan and in China, he became a professor of Tokyo University of Science. Kagurazaka campus of Tokyo University of Science is located at the center of Tokyo, so five subway/railway lines reach in front of the campus.

 

Prof. Xiaohong Zhu (朱小红教授)

Sichuan University, China (四川大学)

Biography: Dr. Xiaohong Zhu is currently a full professor at Department of Materials Science, Sichuan University, China. Dr. Zhu received his BSc degree in Materials Physics from Sichuan University in 2000 and PhD degree in Condensed Matter Physics from the Institute of Physics, Chinese Academy of Sciences in 2006. After that, he did 3-year postdoctoral research at CNRS and CEA in France, and then joined Sichuan University as a professor in 2009. From April 2012 to April 2013, he was also a research scholar at the Department of Physics & Department of Materials Science and Engineering, University of California, Berkeley, USA. He was selected as a New Century Excellent Talent in University of China in 2009 and an Outstanding Young Scientific and Technological Leader of Sichuan Province, China in 2011. Dr. Zhu’s research interests include mainly graphene-based electrode materials and novel solid-state electrolytes for energy storage devices (supercapacitors and lithium-ion batteries), piezoelectric ceramics, as well as multifunctional oxide thin films and related electronic devices. Until now, he has authored/co-authored more than 80 SCI-indexed papers and 2 scientific books.

Title of Speech: Graphene-based electrode materials for supercapacitors 

Abstract: Graphene has attracted much attention since it was firstly stripped from graphite by two physicists in 2004, and the supercapacitor based on graphene has obtained wide attention and much investment as well. However, there are many problems to solve in practical application of graphene-based supercapacitors, for instance, how to reduce the cost and simplify the fabrication process and how to improve further the electrochemical performance. In this talk, I will present our recent breakthroughs in fabricating graphene-based electrode materials for high-performance supercapacitors. First of all, to avoid graphene restacking, we come up with a pumping paper process, that is, when we use force to draw the paper from a small pore, the paper would fold. So here, we report a novel strategy to prepare wrinkled flower-like graphene through a simple suction filtration process. The wrinkled flower-like graphene shows a high specific capacitance of 272 F g-1 and a perfect capacitance retention of 99.5% after 2,000 times of charging/discharging cycles. Second, graphene/MnO2 and graphene/Ni(OH)2 composites with high electrochemical performance are prepared. Last but not least, 3D hierarchical porous carbon-based electrode materials (3DHPCs) with a composite structure are prepared from a biomass waste, sheep manure, by a facile carbonization and activation process without using any additional template. Benefiting from the composite structure, the ions experience a variety of environments, i.e., graphene-like sheets, nanotube- and microtube-like pores coexist in the same material, which, in turn, contribute significantly to the excellent electrochemical properties of supercapacitors, comprising high specific capacitance, outstanding rate capability and excellent long cycle stability. The specific capacitance at large current densities of 1 A g-1 and 50 A g-1 reaches as high as 486 F g-1 and 411 F g-1, respectively, in 6 M KOH electrolyte. Furthermore, the supercapacitor device based on 3DHPCs shows a superior cycle stability with almost 100% retention of the initial specific capacitance after 10,000 cycles; in addition, it yields a Ragone curve with high energy and power density combinations of 57.08 Wh kg-1 at 25.37 kW kg-1

 

Prof. Jong Hak Kim

Yonsei University, South Korea

Biography: Prof. Jong Hak Kim received his Ph.D. degree in Chemical Engineering department of Yonsei University, South Korea in 2003. He worked as a postdoctoral researcher in the department of materials science and engineering at Massachusetts Institute of Technology (MIT) until he joined Yonsei University in 2005 as an assistant professor. He is now a full professor of Chemical and Biomolecular Engineering department in Yonsei University. His current research interests include the design and synthesis of graft copolymers and their applications to gas separation membranes and polymer electrolyte for electrochemical devices. He has a publication record of over 270 papers in refereed international journals such as Adv. Mater., Adv. Funct. Mater., ChemSusChem, ACS Appl. Mater. Interfaces, J. Membr. Sci., Chem. Eng. J. and etc. The sum of the times cited is 5785 and h-index is 42.

Title of Speech: Graft Copolymers for Solar Energy and Gas Separation Membranes 

Abstract: Recently, concerns about global warming and its seriousness have increased greatly with the escalated global emissions of carbon dioxide. Many studies have been pursued on carbon capture and separation technologies based on membranes. Also, photovoltaics have received great attention as a renewable energy system, which can possibly replace conventional fossil fuel combustion. Our group has been working on the use of amphiphilic graft copolymers for gas separation membrane as well as photovoltaics solar energy. It should be noted that graft copolymers are more advantageous than block copolymers due to economical and simple synthetic method. For example, the graft copolymer consisting of poly(vinyl chloride)-graft-poly(oxyethylene methacrylate) (PVC-g-POEM) was synthesized via atom transfer radical polymerization (ATRP) with a copper/ligand complex that functions as a reaction catalyst. Mesoporous perovskite with a high porosity and interfacial properties were synthesized via a solvothermal reaction using PVC-g-POEM as a structure-directing agent. Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT-PSS) is a widely used conductive polymer in various electronic devices. We also reported the first use of PEDOT-PSS to enhance carbon capture performance of all-polymeric membranes. Also, we first report the structural orientation of an amphiphilic crystalline polymer to a highly ordered microphase-separated lamellar structure on a hydrophobic surface. It is formed by the surface graft polymerization of poly(ethylene glycol)behenyl ether methacrylate onto poly(trimethylsilyl) propyne in the presence of allylamine. In particular, allylamine plays a pivotal role in controlling the crystalline phase, configuration and permeation property. The resulting materials are effectively used to improve the CO2 capture property of membranes. Upon the optimization of the reaction conditions, a high CO2 permeability of 501 Barrer and a CO2/N2 ideal selectivity of 77.2 are obtained, which exceed the Robeson upper bound limit.  

 

Prof. Shu YIN

Tohoku University, Japan

Biography: Dr. Shu YIN received a B. S. degree in inorganic chemical engineering from the Dalian University of Technology in 1987. He received a M. S. degree in chemical metallurgy from the Institute of Chemical Metallurgy (ICM, latterly Institute of Process and Engineering, IPE), Chinese Academy of Science in 1990, then worked as a research associate for 2 years at ICM. He came to Japan and worked as a research fellow in the Hydrothermal Chemistry Research Laboratory (Prof. N.Yamasaki’s Group), Kochi University in 1992, then became a research assistant at the Institute for Chemical Reaction Science (ICRS, Prof.T.Sato’s group), Tohoku University during 1995-1997. He received a Ph.D. degree in applied chemistry from Tohoku University (research period shortened) in 1999. He has been a research assistant at the ICRS in 1999, then a lecture and associate professor at the Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University in 2005, and then a full-time professor in 2016. He is also an affiliate professor of eight Chinese Universities / Institutes (Lanzhou University; Dalian University of Technology; Guangxi Research Institute of Chemical Industry, Huaqiao University, Taiyuan University of Technology, Sichuan University, Beijing University of Technology, University of Science and Technology Beijing / State Key Laboratory of Rare Earth Resource Utilization). He has authored more than 440 original research papers, contributed 25 book chapters/ review papers and 22 patents. His research papers were cited more than 9140 times and showed a citation h-index = 53. His research interests include morphological control of nanostructured materials, photocatalytic materials, UV-shielding materials, hydrothermal / solvothermal process, soft chemical synthesis etc.. Prof. Yin has received various awards, including “Functional Materials Scientist Award(2009)”, “Excellent Academic Photograph Award(2005)”, “The 40th Harada Award(2000)”. “The 59th Academic Award of the Society of Inorganic Materials Japan (2015)”, and “The 69th CerSJ Awards for Academic Achievements in Ceramic Science and Technology (2015)”.

Title of Speech: Synthesis of Nanostructure-Controllable Nitrides / Oxynitrides and their Novel Applications  

Abstract: Nitrides and oxynitrides have attracted many researcher’s attentions, because of their novel functionalities. The physical-chemical properties of the materials greatly affecte by their morphology, particle size, specific surface area and crystalline facets etc. It is accepted that hydrothermal or solvothermal method has become a promising way for the synthesis of inorganic functional materials, because of the possibility for producing nano-size crystals with soft agglomeration, and controlling the phase composition or morphology by optimizing reaction conditions. In order to develop novel functionality of nitride materials, nanostructure control is an interesting topic. However, for normal synthesis process, it is quite difficult to prepare morphology / particle size controllable nitrides directly. In the present talk, environmental friendly low-temperature synthesis of the products with controllable particle size and morphologies will be introduced. Some novel properties such as photocatalytic activity and hydrogen gas sensing performance of the nitrides and oxynitrides will be introduced also.
In a typical synthesis process for morphological control, the precursors with various morphologies synthesized by hydrothermal process were utilized for the nitridation treatment. As an example, GaN was prepared from α–GaOOH precursors by a direct nitridation method under NH3 flow. The nitridation was carried out at various temperatures to obtain GaN with different oxygen contents, which played important role to H2 gas sensing response. Although the oxides showed very limited gas sensing property, the nitrides showed quite enhanced sensing sensitivity.The sensor devices also showed high stability and repeatable property after being exposed in H2 gas at high temperatures. Furthermore, the morphology controllable aluminum nitride such as needle-like, nest-like and plate-like AlN were also successfully synthesized by the similar manner. The plate-like morphology had the lowest shrinkage completing temperature, indicating its quite different sintering behavior compare with other morphologies. On the other hand, in order to synthesis the nitrides and oxytrides with nanoscale particle size, the addition of acetylene black during the hydrothermal process is an effective way. As an example, the Gallium oxynitride (GaON) nanoparticles could be successfully synthesized through hydrothermal treatment of an aqueous solution containing Ga(NO3)3 together with hexamethylenetetramine and acetylene black., followed by calcination and then nitridation in ammonium gas atmosphere. The presence of acetylene black in the hydrothermal treatment is an effective way for the synthesis of nanosize of particles even followed by high temperature calcination and nitridation treatment. The obtained GaON nanoparticles show a higher photocatalytic NOx decomposition activity than that of bulk GaON, because of their small particle size and high specific surface area.  

 

Dr. Seok-Keun Koh

iCube Global, Korea

Biography: Dr. S. K. Koh received his Ph.D. at Department of Mechanics & materials Science, Rutgers, the State University of New Jersey, U.S.A, in 1989, and served as Research Associate at High Pressure Materials Research Lab. At Rutgers Univ. in 1989. He worked at Ion Beam Engineering Laboratory, Kyoto Univ, Japan as a foreign Professor and Head of Lab. in 1991, and served at Korea Institute of Science and Technology (KIST) as a Principal Researcher and adjunct Professor of Yonsei Univ. and Korea Univ. in Korea until 2000. He has been worked on surface modification and thin film growth by ion beam from his Ph.D. thesis” Enhancing adhesion between Cu thin films and Polyimide by 100keV Ar+ ion irradiation” for 30 years. He has many awards” One in hundred outstanding men in Korea” in 1995, “An Award of New Scientist in Korea” in 2000, “A Best scientist in KIST”, in 2000, etc. His surface modification technology was nominated to “Best Seven technologies in Asia, Asiaweek, in 2001 and his inventions relating to surface modification technologies were broadcasted many times from Discovery News and ABC News in the U.S.A., NHK in Japan, and all Newspapers & Broadcast in Korea. He licensed and commercialized the technologies that were invented by him and his colleagues in surface modification by ion beam to more than 15 companies such as LG electronics, Samsung Electro - Mechanics, Plaworks, etc., and he managed companies” P&I Corp.” funded by KIST as a CEO from 2002- 2007 and “GL Materials Inc.” mainly focused on nano particles formation technology, namely “Nanoparticles on Powder: NPP” as a CEO from 2009- to now. The applications by the NPP technologies has been transferred to various Korean, Chinese and Japanese companies. He has 159 articles and 69 patents.

Title of Speech: Current perspectives of nanoparticles on powder (NPP) process in antimicrobial applications 

Abstract: Nano-sized (2~10 nm) metal particles were formed and accumulated on the rotating powders or chips substrate by conventional physical vapor deposition (PVD) process.
The powders such as glucose, sucrose, NaCl, Na2CO3, polyethylene terephthalate (PET), poly tetra fluoro ethylene (PTFE), and g-Al2O3 were selected for the nano sized particle formation on the powder. The nuclei did not grow up to coalescence stage and did not agglomerate each other when the powder in the vessel was continuously circulated during the deposition. Formation and accumulation mechanism, shape, characteristics, etc. of nano-particles on the carrier powder during the process have been explained in terms of thermodynamics with TEM, SEM, EDX, UV spectroscopy, etc. comparing with conventional thin film growth in PVD.
Silver, Copper, Bronze (Cu Zn alloy), precious metals nanoparticles, etc. were fabricated on the various plastic chips (PE, PP, PS, PET, PBT, PVDF, and PTFE) by the process. Nano composite were formed by simple hot melt blending process for the micro sized fiber, thin films and blocks, and the melting temperature were the same as the plastic extrusion process. Average particle size of the particles were less than 10 nm and the nanoparticles were uniformly dispersed in the plastics by self dispersion process and the particles have not agglomerated and migrated in to the surface not only by hot water washing process but also by microwave treatment. Mechanical properties of the nano composites were not changed much until the concentration of 1000ppm of metal nanoparticles in plastics.
Antimicrobial activities were confirmed by Staphylococcus aureus, Escherichia coli, and Klebsiellosis pneumoniae by standard Growth inhibitory or killing effect of 99.99% were appeared at the concentration of 50 ppm of PET fibers, 300ppm of films and 600ppm of blocks of PS, respectively, the nanoparticle concentration efficiency were depended on the shape (fiber > films > blocks) of the polymer, and the antimicrobial activity of the fibers were not reduced until 30 times washing process. Shelf life or food spoilage were observed by simple comparison process with ordinary PE film zipper bag, 300ppm Cu nanoparticles in LLDPE films zipper bag and 300ppm Cu nanoparticles in LLDPE zipper bag + 2 grs of Zn (1000 ppm) nanoparticles on super absorbent polymer(SAP) for 20 days. The most effective food reservation methods were the Cu nanoparticles in LLDPE films with Zn nanoparticles on SAP and allfoods were never spoiled for 20 days reservation times. Advantages such as easy addition of nanoparticles into polar or non-polar products, antibacterial fiber for textile by nano-composites (Ag/PTFE, Ag/PET, etc.), natural silk fiber with Ag nanoparticles (20~300 ppm) from cocoon, nano-particle loading process in porous active carbon, etc. dueto the non-necessity of dispersion agent have been discussed with real field data.