Day :
- Advanced Nano Research and Nano Tech Applications
Session Introduction
Yogesh Kumar Sharma
Govt. Post Graduate College Haldwani (Nainital) Uttarakhand, India
Title: Spectral analysis of ZnO Nanomaterials with Neodymium ions
Biography:
Dr. Yogesh K Sharma is working as a Professor and Head, Department of Physics, Government Post Graduate College, Ranikhet (Almora) affiliated to Kumaun University Nainital (Uttarakhand) India. Dr Sharma has participated in 43 international and national conferences and presented his paper. He has over a 49 research papers in reputed journals with good number of citations. Dr Sharma has worked as a senior scientific officer in Physics at IIT Delhi India, Assistant professor in physics at JNV University Jodhpur India and Associate Professor in Physics at Govt. P.G. College Rudrapur, India.
Abstract:
Nanoparticles with rare earth ions have many fascinating properties, giving it the potential to be used for advanced optoelectronic and spintronic applications. Neodymium is one of the most widely used elements for high power laser applications and recently these lasers have shown their usefulness in inertia confined fusion experiments. Furthermore, Nd3+ doping reduces the band gap energy and enhances the possibility of the photodegradation of dyes under visible light.
In the present paper, ZnO Nanomaterial with different concentration of Nd3+ ions have been prepared by chemical synthesis method and characterized by XRD, SEM, TEM, FTIR, absorption and fluorescence spectra. The SEM image shows approximate Hexagonal shape to ZnO nanoparticles and the size of the particles around 200-20nm. When the concentration of Nd3+ is increased the particle size decreases. Nine absorption bands have been observed in the ZnO nanomaterial with neodymium ions. The assignment of these bands from ground state 4I9/2 to the excited states 4F5/2, 4F7/2, 4F9/2, 2H11/2, 4G5/2, 2K13/2, 4G9/2, 2K15/2 and 4D3/2 energy levels are observed in ZnO nanomaterial. The values of Slater – Condon (Fk ), Racah (Ek ) and Lande¢( z4f ) and Judd-Ofelt parameters are computed for each nanomaterial specimen by using partial regression method taking into consideration all the absorption peaks observed. The laser parameters have also been computed with help of fluorescence data.
S.M.Sivakumar
College of Pharmacy, Jazan University, Jazan, Kingdom of Saudi Arabia
Title: Physiochemical characterization of Sodium selenite nanoparticles targeting against hepatoma
Biography:
Dr.S.M.Sivakumar is presently working as an Assistant Professor, Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan, Kingdom of Saudi Arabia. He is basically Pharmaceutical Biotechnologist specialized in the area of vaccine delivery system. He had received awards and published many research/review articles to his credit. His recent research of interest is focused on nanoparticle, vesicular, nanosomes drug delivery system targeting hepatoma, gene and antibiotic delivery system. The second major interest involves screening of antimicrobials, anticancer and antioxidants principles from seaweeds.
Abstract:
Targeting drugs to the actual cellular site especially for can cancer is still a challenge in pharmaceutical research. Worldwide hepatocellular carcinoma (HCC) is the fifth most common cancer that affects approximately half a million persons every year, which leads to the third leading cause of cancer-related death. HCC characteristically occurs due to chronic viral hepatitis B and C infection is the most important etiologies. In HCC tumorigenesis, several oncogenic pathways have been identified. Several molecular subtypes that interplay between surrounding tissue and tumor have been investigated. These studies suggested that hepatocellular carcinogenesis is a complex process involving hepatocyte injury, inflammation, proliferation and genomic instability leading to alternations in several oncogenic pathways. Activation of several signaling pathways, both in cirrhotic tissue and in overt HCC, has been implicated in human hepato carcinogenesis.Sorafenib is the first oral agent to show activity against human hepatocellular carcinoma but sorafenib causes multiple human dose-limiting toxicities although the clinical application of sorafenib has shown good tolerability in the studied populations. As a consequence, reducing the overall dose of sorafenib is therapeutically more important rather than conventional dosage form. The present study demonstrating the successful sodium selenite nanopartccle injectable formulation as a better therapeutic agent for hepatoma.
Hany A. Elazab
The British University in Egypt, Egypt
Title: Impact of using Flow Chemistry on Applied Catalysis
Biography:
Dr. Hany Elazab is a senior Assistant Professor and Program Director of the chemical engineering department at British University in Egypt (BUE). He was awarded his Ph.D from (VCU) in USA. He participated in several research projects in Nanotechnology, Catalysis, and Micro Reactor Technology funded from (NSF) in USA. He also awarded Young Investigator Research Grant (YIRG) and High Impact Research Award from the British University in Egypt (BUE). He is teaching courses of engineering thermodynamics, catalysis, mass and energy balance, chemical engineering thermodynamics, and petrochemical production processes. He has published several research contributions to international journals, proceedings and international conferences. He is also participating as a reviewer and editorial board member in several international journals in catalysis, nanotechnology, chemical and environmental engineering
Abstract:
Microwave assisted reduction technique was developed to prepare active Pd/Fe3O4 nanoparticles as a highly efficient magnetic catalyst used for the catalytic oxidation of carbon monoxide. The method involves simultaneous reduction of the corresponding Pd (NO3)2 and Fe (NO3)3.9H2O under the microwave irradiation conditions using a flow reactor. Hydrazine hydrate was used as the reducing agent under flow reaction conditions. The Pd/Fe3O4 nanoparticles have shown to exhibit high catalytic activity for CO oxidation catalysis. The catalytic activity of these materials can be attributed to the high degree of dispersion and concentration ratio of the Pd nanoparticles deposited on the surface of magnetite (Fe3O4) with a small particle size of 5-8 nm due to the effective microwave assisted reduction method. These nanoparticles are further characterized by variety of spectroscopic techniques including X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The investigated catalysis data revealed that palladium supported on iron oxide catalyst showed remarkable high catalytic activity towards CO-oxidation.
Po-Chung Lee
National Cheng Kung University, Tainan City 701, Taiwan
Title: ZnO Hierarchical Nanorods Array Growth By Hydrothermal Method
Biography:
Po-Chung Lee has completed his bachelor's degree from National San Yat-sen University.He is studying master degree at National Cheng Kung University now.His reacher area is pyroelectric property of ZnO material.
Abstract:
ZnO Nanorods Array Heterostructure Growth By Hydrothermal Method: By two step hydrothermal method, ZnO nanorod arrays heterostructure can be synthesized.To prepare nanorods array, first step of hydrothermal method is controlled in low concentration. Second step will be controlled in a high concentration condition, and it can create second morphology other than nanorods array.The main precursors used in this paper are zinc acetate dehydrate (Zn(OAc)2．2H2O) and hexamethylenetetramine (HMTA).Through SEM images and the growth condition, an idea of structure-forming mechanism is introduced.