6^th International Conference and Exhibition on Materials Science and Chemistry May 17-18, 2018 Rome, Italy

Biography:

Kyriakos Porfyrakis is an Associate Professor of Materials, an EPSRC Fellow and the Head of the Laboratory for Carbon Nanomaterials at the Department of Materials, University of Oxford. He has attracted over £2.5 M in funding as a Principal Investigator in the fields of Endohedral Fullerenes and Organic Electronics. He has over 100 publications (h-index: 27, i10-index: 52) that has attracted over 2370 citations. He has presented over 40 invited lectures and seminars, including 3 keynote lectures. In 2005, he won the Alan Glanvill Award of IOM3. In 2016, he was admitted as a Fellow at the Royal Society of Chemistry for his contributions to Chemical Sciences. He is the Academic Founder and Director of Designer Carbon Materials Ltd., a spinout company of the University of Oxford, aiming to commercialize endohedral fullerenes and their derivatives.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

Paramagnetic endohedral fullerenes hold promise for a number of applications including quantum information processing and quantum sensing. In the case of endohedral nitrogen fullerenes such as N@C₆₀ and N@C₇₀, the nitrogen atom is almost completely isolated from the fullerene cage. This results in very long electron spin phase coherence times. The chemistry of endohedral nitrogen fullerenes has developed to a degree where it can be used to create functionalized systems with high aspect ratios that are prone to high alignment. This talk will deal with our recent results for several N@C₆₀ and N@C₇₀ derivatives aligned in liquid crystals. Within the liquid crystal matrix, we have achieved an order parameter factor Ozz of 0.61. This is a significant improvement on the best result that has been previously reported for endohedral fullerene derivatives. More importantly, this allows us to manipulate the intrinsic zero-field splitting (ZFS) of the spin resonance signal. By in situ rotating frozen endohedral fullerenes inside the magnetic field of the ESR spectrometer, we deliberately changed the orientation distribution of the molecules and tuned the splitting energy of ZFS. We achieved remarkable agreement between experimental values and simulation data. This work can be expanded to control of dipolar coupling for a two-qubit gate. Also, the water functionalization of N@C₆₀ will be discussed. We have developed the first water-soluble derivative of N@C₆₀ through the covalent attachment of a single addend, containing two permethylated β-cyclodextrin units to the surface of the carbon cage. The linewidth of the derivative's EPR signal is highly sensitive to both the nature of the solvent and the presence of Cu(II) ions in solution. Thus, we have shown that it has the potential to be used as a quantum sensor for other spin-active species.

Biography:

Fargin Evelyne has strong experience in nonlinear optical properties of glasses and particularly third and second order nonlinear susceptibility. She implanted in Bordeaux the surface glass processing by poling which is now developed with co-workers for composition, mechanical properties and optical structuring of the glass surface. She recently developed new heavy glass oxides for fiber applications thanks to strong collaborations inside an international laboratory LUMAQ (U. Bordeaux, COPL Laval, INRS Québec). She also was involved in the study and optimization of laser-induced defects in glasses and luminescence properties of flaws for the Megajoule Laser Facility in Bordeaux.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

Surface engineering of soda-lime silicate glass has been performed by thermal poling and the correlation between the modification of the glass composition, the local structure and the mechanical properties of the field-induced modified surface has been investigated. Glow discharge optical emission spectroscopy (GD-OES) demonstrates the multi-layered structuring of the glass surface, due to the migration of mobile cations species. The nature of the atmosphere during poling directly impacts on the charge compensation mechanisms, the multi-layer shape and composition. This work demonstrates the presence of a pure layer of silica beneath the surface of the poled glass under N₂ which strongly increases the mechanical properties of soda-lime glass, especially hardness. The thermal poling treatment is then used to enhance a densification of the poled region and a compressive stress at the silica nanometric layer surface.

Berkovitch nano-indentation results on unpoled reference versus poled soda-lime glass under N₂

Biography:

John O Roberts has been an Open University Science Tutor for 30 years having attended Rutherford Appleton Lab and CERN as a summer school student. He has been a Freelance Tutor of Maths, Physics and Chemistry for many years and wrote the book “Those Infinities and the Periodic Table” over a period of 5 years from an idea in December 2010.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

The patterns of stable quantum states in the periodic table are inverted and extended to infinity in both directions to accommodate spatial variation relative to the nucleus. The upper end leads to a cut off point for white matter. The lower end represents quantum states in plasma. At 10^-15 m to 10^-20 m the interaction between weak, strong and gravity forces results in suitable boundary conditions for the production of elementary particles. Chemical classification of the elements requires convergence of chemical properties and quantum states. By defining group number as the maximum number of electrons in any one shell, hydrogen and helium are moved to the first set of 2(1)² states first proposed by Janet. The atomic numbers are adjusted and mass number removed as it is an average of isotopes of each element produced in every supernova. This produces the Roberts Janet nuclear periodic table which proposes two zero states, a cut off and start point, of the electric field in attractive then repulsive modes. By symmetry of these fields energy states emerge in plasma with the counter intuitive property that the nearer the nucleus the greater the number of energy states. Fusion results and the consequential recycling implies a more rapid collapse than supernovae given sufficient energy density that could create an as yet unobserved interaction at 10^-50 m to 10^-65 m between the strong and gravity forces. String theory and extra dimensions may be required to explain such mechanisms and multiverses.

Biography:

Jin An Wang is a full Professor in Chemical Engineering at the National Polytechnic Institute in Mexico City, Mexico. He is a National Researcher of Mexico and a Member of the Mexican Academy of Sciences. He is the Co-Author of more than 160 scientific publications, five patents, Co-Editor of three books in “Advanced Catalytic Materials” and three special volumes in Catalysis Today. He served as Chair of the first to fifth International Symposium on New Catalytic Materials. He was a Visiting Professor at Universidad Nacional Autónoma de Mexico, Universidad Autónoma Metropolitana and Worcester Polytechnic Institute in USA. His research interest focuses on the synthesis of new catalytic materials, catalysis for petroleum refining and treatment, catalysis for clean fuel production and environmental catalysis.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

There are many structural defects or lattice vacancies in the surface of solid materials. From the surface sciences and catalysis points of view, these cationic or anionic defects are active centers for reactant adsorption and surface reactions. Investigation on structural defects and their correlation with reaction activity may provide new insight into the understanding of catalytic behaviors. In this work, a set of MoO₃/SBA-15 mesoporous hybrid catalysts were characterized with a variety of spectroscopic techniques and their crystalline structures were refined with Rietveld method. Oxygen defect concentration_, crystallite size, phase composition, surface acidity, mesoporous regularity and textural properties were reported. Both α‒MoO₃ and β‒MoO₃ phases coexisted but α‒MoO₃ was predominated. Oxygen defects were created in the orthorhombic structure and its concentration decreased as MoO₃ content increased. All the MoO₃/SBA-15 catalysts chiefly contained a big number of Lewis acid sites originating from oxygen defects in MoO₃ crystals. In the absence of formic acid, the oxidation of 4,6-dibenzothiophene in a model diesel was almost proportional to the number of Lewis acid sites of the catalysts. In the presence of formic acid, 4,6-dimethyldibenzothiophene (4,6‒DMDBT) oxidation was significantly affected by the formation of surface peroxometallic complex and Lewis acidity. Formic acid addition could improve the oxidative desulfurization (ODS) efficiency by promoting peroxometallic complex formation and enhancing oxidant stability. Under the optimal reaction condition using the best 15 and 20 wt% MoO₃/SBA-15 catalysts, more than 99% 4,6‒DMDBT could be removed at 70°C within 30 min. This work confirmed that 4,6‒DMDBT oxidation is a texture and particle size sensitive and Lewis acidity dependent reaction. This work also shows that crystalline structure refinement combination with experiments can gain new insights in the design of heterogeneous nanocatalysts and help to better understand the catalytic behavior in the oxidative desulfurization reactions.

A Rietveld refinement plot for the 20 wt% MoO₃/SBA-15 catalyst

Biography:

Xiaoying Li received her PhD degree in Surface Engineering in 1999 and became a Senior Researcher in 2017 at the Surface Engineering Group, University of Birmingham, UK. As a Research Manager of the group, she has successfully completed a dozen of high quality research projects and published about 90 peer reviewed papers. She has delivered a dozen of invited talks to national and international conferences. Her research work has been focused on development of advanced surface engineering technologies, including novel ceramic conversion treatments of light alloys, low-temperature plasma surface alloying of stainless steels and recently surface modification of carbon fibres; microstructural characterisation of surface engineered materials, in particular the nature of metastable S-phase using cross-sectional TEM (XTEM) and more recently nano-surface fabrication and characterisation of nano composite materials using nanoindentation FIB/SEM and XTEM.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

The non-aerospace use of titanium alloys (such as in the motor sports industry) has become increasingly popular over the last 20 years due to their light weight, high ductility and high strength in conjunction with excellent corrosion resistance and outstanding biocompatibility. Titanium alloys are normally classified by their structure into the groups of alpha, alpha-beta and beta alloys. Advantages of beta alloys include excellent workability, good hardening properties, high corrosion resistance and excellent fatigue/crack propagation behavior. However, titanium and its alloys are characterized by inferior tribological properties including a high and unstable coefficient of friction and a strong scuffing tendency. Many surface engineering methods have been researched to combat the poor tribological properties of titanium and its alloys. Research carried out by Dong and Bell on the titanium alloy Ti-6Al-4V demonstrated the effectiveness of the thermal oxidation (TO) treatment in enhancing the wear resistance of the alpha/beta alloy. However, this process cannot be directly applied to the TIMET low cost beta (LCB) alloy since it is a metastable beta alloy. The long-time TO treatment at high-temperature will cause undue growth of the beta grains and excessive precipitation and growth of the alpha phase, thus leading to the degradation of the core mechanical properties of the beta-alloy. Therefore, the aim of this research was to enhance the tribological properties of TIMETAL LCB alloy without evoking a loss of core mechanical properties through developing new surface engineering processes based on integration of bulk heat treatment with surface ceramic conversion. The new integrated processes effectively harden the LCB without compromising the mechanical properties of the beta alloy. A dense adherent titanium oxide was formed on the oxygen hardened sublayer. The surface hardness was increased from 400 to 1100 HV and the sliding wear resistance was increased by more than 10 times following the optimal integrated treatment.

Biography:

Akira Yamaguchi received his Doctor of Engineering degree at the University of Tokyo in 2015 for the work on functionalization of metal-oxide and sulfide minerals toward efficient multi-electron transfer catalysis with abundant elements under the direction of Prof. Kazuhito Hashimoto. After his Postdoctoral research in Dr. Ryuhei Nakamura’s laboratory of RIKEN from April 2015 to March 2016, he joined Tokyo Institute of Technology as an Assistant Professor. His particular field is Electrochemistry and his research interest includes the development of catalysts and the primordial carbon fixation on the Earth. Recently, he developed MnO_x-based water oxidation catalysts inspired by the natural photosynthesis. Now he is aiming at the solar to chemical energy conversion system, called artificial photosynthesis, and his experience in developing water oxidation catalysts will contribute to this research fields.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

To overcome energy and environmental issues we are facing, fuel production from water and/or CO₂ is highly demanding. Making fuels through both H⁺ and CO₂ requires electrons, and the most abundant electron source in the world is water, like natural photosynthesis achieved by oxygen evolution reaction (OER: 2H₂O → O₂ + 4H⁺ + 4e^-). Inspired by the oxygen evolution reaction (OER) center in natural photosynthesis, which is composed of CaMn₄O₅ cluster, numerous numbers of manganese oxide-based catalysts have been developed. However, their activity largely decreased under neutral pH. This work introduces the design strategy to enhance the OER activity of MnO₂ electrocatalysts under neutral pH in terms of the redox chemistry of active Mn species. The key chemical species is Mn³⁺, which works as the intermediate of OER on MnO₂ but unstable under neutral pH. To stabilize Mn³⁺, induction of concerted proton-electron transfer (CPET) and regulation of facet orientation were attempted. Regarding the CPET induction, introduction of pyridine into the electrolyte, which works as a CPET inducer, altered the reaction path and resulted in the activity enhancement. As to the facet orientation regulation, (101)-oriented MnO₂ was synthesized based on the article which reports that Mn³⁺ is stabilized on (101) facet of rutile MnO₂. The electrochemical OER examination revealed that (101)-oriented sample exhibited higher activity than (110)-oriented ones. The results indicate that those two approaches are efficient strategy to enhance the electrochemical OER activity of MnO₂ under neutral pH. Further studies concerning the corporative effect of CPET and facet orientation have been under investigation.

Biography:

Nana Gorgaslidze completed her PhD from Saint-Petersburg State Chemical-Pharmaceutical Academy, Russia. She is the Director of the Iovel Kutateladze Institute of Pharmacochemistry, Tbilisi State Medical University (TSMU) and Professor at the Department of Social and Clinical Pharmacy at TSMU. She has published more than 94 papers in reputed journals, authored four books and has two patents. She is a Member of organizing committee of several international conferences and meetings. She has more 40 years of teaching experience at the Tbilisi State Medical University, Georgia. She is the Founder of the Georgian Pharmaceutical Association (President: 2002–2005) and newspaper, Pharmacy. She is a Member of Scientist and Young Pharmacists of Georgia. She has long timework experience at the Ministry of Health, Labor and Social Affairs of Georgia in state control of quality medicinal and pharmaceutical products and other departments of the same minisity.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

Gel of bromelain has anti-inflammatory properties and hence is used for treatment of edema and inflammations. This was developed at TSMU Iovel Kutateladze Institute of Pharmacochemistry. On previous researches we published the data of some properties of papain and bromelain containing gels. The presented work belongs to the development and validation of accurate and sensitive assay method for quantitative determination of bromelain in gel based on UV-spectrophotometric analysis. Elastasin was used as substrates for their analysis. Absorbance was recorded at 595 nm. The developed method is linear, precise and sensitive; Intra- and inter-day measurements. All methods were validated as per ICH guidelines and can be adopted for the routine analysis of bromelain in gel formulations.

Biography:

Seda Cetintas graduated in 2011 from Department of Chemistry at Faculty of Science and Arts in Anadolu University. She received MD in 2014 and then started PhD in Chemistry from Kocaeli University. Her primary specialization was applications on recovery of metal values from ores and removal of impurities. Her secondary specialization was applications on statistical design of experiments. She is interested in applying these topics to several content areas in analytical chemistry, including separation, purification and enrichment. During PhD, she works in a research project on nickel recovery from lateritic ore.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

In this study, a new application of nickel improvement is proposed involving mechanochemical conversion with a reagent (R-MC) followed by an acid leaching (AL) process. It was developed based on the synergistic effects of high-energy milling and different chemical reagents which have a positive effect on extractive metallurgical leaching processes. The combination of R-MC as a pretreatment of AL aimed to overcome the disadvantages of traditional metallurgical processes used for nickel recovery, such as high temperature, high acid concentration, high cost and material requirements. For the statistical design of experiments combined with regression techniques, response surface methodology (RSM) involving central composite design (CCD) was applied to optimize the key factors that affect processes conditions in both R-MC and AL for high-efficiency nickel recovery. The optimum processes conditions of both R-MC and AL were determined for high-efficiency nickel recovery process by designing the experiment and performing a statistical analysis on the experimental data. The large determination coefficients (R²>95%) for each process indicated that CCD is a suitable design for both mechanochemical process with reagent and acid leaching. The FTIR, XRD and SEM analyses results support each other in that the application of mechanochemical processes has positive effects on valuable metal recovery in extractive metallurgy. In addition, the experimental data obtained from leaching experiments was evaluated according to shrinking core model equations to determine the advantages of mechanochemical processes on leaching kinetics. The leaching control step was identified as both chemically and diffusion-controlled by the shrinking core kinetic model. Thus, this study provided a new and more economical method in which mechanochemical pretreatments with reagents were combined with acid leaching. The positive effect of mechanochemical processes on leaching with reagents was defined by their high nickel efficiency (Ni(%)>95%) at lower acid concentrations (0.5 M

Biography:

A Jedrzak has received his MSc degree in Organic Chemistry in 2016 at Poznan University of Technology. Since 2016 he is a PhD student of Chemical Technology at Poznan University of Technology and also a Member of NanoBioMedical Centre in Poznan. His research interests are biosensors, enzymatic and catalytic systems and synthesis of hybrid/composite materials for nanomedicine.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

The development of technology has contributed to the intensification of research into the creation of more advanced materials. Such demands can be fulfilled by various inorganic-organic hybrid materials that were previously widely used in many fields in science also for enzyme immobilization or biosensors constructions. Rapid development of biosensor systems started after the first biosensor containing glucose oxidase was developed by Clark and Lyons in 1962. To this day, many scientists are working on new methods of creation to better detection, as evidenced by amounts of published papers. Novel innovative materials for glucose biosensor have gained enormous attention due to the need for a cheap and effective blood glucose monitoring. Monitoring of glucose level is important aspect in various media, like blood, fluids or juices. Despite the presence in the market of biochemical specialists for the qualitative and quantitative detection of glucose, the commercial available glucose monitoring device have become a crucial part of diabetes care or monosaccharide but has some limitations in accuracy and errors that can be limited due to manufacturing variances, storage, aging etc. Great efforts have been focused on the preparation of magnetite/lignin/polydopamine (Fe₃O₄/Lig/PDA) hybrid material combined with glucose oxidase for amperometric glucose biosensors. In this work a synthesis and physicochemical characterization of a novel magnetite/lignin/polydopamine (Fe₃O₄/Lig/PDA) material is presented as a novel and effective platform for enzyme immobilization and biosensing application. The platform has interesting features like improved thermal and mechanical stability, excellent adhesion for inorganic and organic materials, transferability of electrons and photo thermal properties. Greater material stability and durability and the extension of its attractiveness, compared to the current commercial products can be used in determining the level of glucose in different media like body fluids, juices, fruits.

Scheme presents construction of biosensor using a carbon paste electrode (CPE)