Nanotechnology for Energy, Environment, Electronics, Healthcare and Industry: Session I
Program Organizers: Navin Manjooran, Solve; Gary Pickrell, Virginia Tech
Wednesday 8:00 AM
October 12, 2022
Room: 321
Location: David L. Lawrence Convention Center
Session Chair: Navin Manjooran, Chairman, Solve; Gary Pickrell, Virginia Tech
8:00 AM Introductory Comments
8:40 AM
3D Metal Oxide Magnetic Nanostructures for The Design of Nanosensors and Magnetic Actuators: Ojodomo Achadu1; 1University of Warwick
The 3D geometry of magnetic nanostructures has been found to have a direct impact on their magnetic configurations and magnetization properties, due to spatial coordinates, which sheds new light on next-generation nanomagnetic materials for advanced magnetic nanosensors and actuators towards energy harvesting applications. Our work presents novel synthesis pathways for the assembly of multifunctional 3D magnetic nanostructures composed of magnetic metal oxides nanoparticles for the design of magnetic device platforms. Specifically, synthesized 3D nanostructures with different shapes/sizes were integrated with bio-engineered piezoelectric commodity polymers for fabricating highly efficient magneto-piezoelectric nanogenerator device which can convert ambient stray magnetic noise to electricity via a magneto-mechano-electric coupling effect. It was found that the 3D nanomagnetic structures could enhanced the energy product (BH)max of the materials from 50 kJ·m/3 to 165 kJ·m/3 which demonstrates the promising deployability and high performance of 3D magnetic nanostructures for fabricating nanotechnology-driven energy devices and actuators.
9:00 AM
Antibacterial Action of Gold Nanoparticles Against Various Types of Bacteria: A Concise Review: Ikhazuagbe Ifijen1; Best Atoe2; 1Rubber Research Institute of Nigeria; 2Atoe Specialist Medical Centre Limited
Nanosized metal particles are considerably utilized in biomedical domains due to their small size-to-volume ratio, chemical properties, exceptional optical, comprehensive thermal resilience and physical properties. Among them, gold nanoparticles (GNPs) have been proven to be a remarkable choice for utilization as an antibacterial agent. AuNP has been demonstrated to have a satisfactory performance against several types of pathogens, and analysis of its antibacterial action has also become a trending subject in contemporary times. This report outlines the antibacterial action of gold nanoparticles against various types of bacteria. The challenges surrounding their use as an antibacterial agent, future growth are also highlighted in this review.
9:20 AM Cancelled
Electromagnetic Interference (Emi) Shielding Features of Gum Arabic Emulsified Superparamagnetic Lightweight Natural Rubber Latex/Fe3o4 Nanocomposite: Stanley Omorogbe1; Ikhazuagbe Ifijen1; Areguamen Aigbodion1; Doreen O. Omorogbe2; Joy Iyamu3; Omotehinse Orimisan4; 1Rubber Research Institute of Nigeria; 2F.C.T Universial Basic Education Board, Abuja, Nigeria; 3University of Benin; 4Paramount PC
Magnetic nanoparticles have attracted considerable attention due to numerous applications such as drug vehicles, hyperthermia, controlled/sustained release phenomena, magnetic filters, prostate cancer, antibacterial agent and information storage. As such, this study reports the synthesis of gum arabic emulsified Fe3O4 nanoparticles and natural rubber latex nanocomposites via a modified co-precipitation technique. Thereafter, the electromagnetic interference (EMI) shielding features of the synthesized nanocomposites, microscopic and crystallographic analyses were examined. SEM and TEM results showed that the nano-magnetite distributes their particles into the natural rubber matrices in an excellent manner. Analysis of the NRL/Fe3O4 nanocomposites showed saturation magnetization of 6emu/g and superior EMI shielding effectiveness (SE) value of 9.51db at 9.63GHz with superior magnetic properties. The diameters of the generated Fe3O4 nanoparticles were observed to be in the range of 10 – 20 nm. XRD analysis of the fabricated powder confirms the formation of pure and highly crystalline Fe3O4 nanoparticles.
9:40 AM
Ternary Oxides Based on Cobalt, Iron, Copper Nanoparticles for Supercapacitor Electrode: A Review: Ikhazuagbe Ifijen1; Esther Ikhuoria2; 1Rubber Research Institute of Nigeria; 2University of Benin
In recent times, superior practical materials have been comprehensively explored to meet the vital necessity of quicker and more proficient energy storage systems. Properties such as environmental friendliness, low cost, multiple oxidation states, high theoretical specific capacitance, high power density, a fast charge/discharge process and excellent cycle stability have made ternary metal oxides (TMOs) one of the most fascinating electrode materials for supercapacitors. It is generally known that the electrochemical performance of supercapacitors is principally reliant on electrode materials. This review specifically summarizes the current advancement of nanostructured ternary oxides based on cobalt, iron and copper as anode electrodes for electrochemical supercapacitors. The challenges and corresponding feasible solutions of these TMOs in realistic utilization are also highlighted.
10:00 AM Break
10:20 AM
Fabrication of Fexible Nanocomposites Based on PVC, Electrical and Magnetic Nano Fillers for the Shielding Against Unwanted Electromagnetic Waves: HM Fayzan Shakir1; Khadija Zubair1; Tingkai Zhao1; 1Northwestern Polytechnical University
Electromagnetic(EM) waves are being used widely now a days by all kind of wireless telecommunications. EM waves can cause various health issues and affect performance of electronics. Polyaniline(PANI), Polypyrrole(PPY) and Barium ferrites(BaFe) were successfully synthesized. Nanocomposite thin films with various compositions of PVC, PANI, PPY and BaFe were prepared. XRD technique was first used to confirm the successful fabrication of all nano fillers and particle size analyzer to measure the exact size and SEM is used for the shape. 4-probe technique is then used to evaluate DC conductivity of all samples. Samples with high concentration of PPY and PANI exhibit remarkable increased electrical conductivity due to fabrication of interconnected network structure inside the PVC matrix that is also confirmed by SEM analysis. Less than 1% transmission was observed in whole NIR region(700nm– 2500nm). Also, less than -80dB EMI shielding effectiveness was observed in microwave region(0.1GHz-20GHz).
10:40 AM
Removal of Copper (II) and Lead (II) from Hydrometallurgical Effluent onto Cellulose Nanocomposites: Mechanistic and Artificial Neural Network Modeling: Musamba Banza1; Hilary Rutto1; Tumisang Seodigeng1; 1Vaal Universitry of Technology
A well-designed adsorption system should meet the requirements for high efficiency while remaining cost and time effective. nanocellulose materials have a proven track record as viable adsorbent alternatives. Cellulose nanocrystals (CNCS)and chitosan were used to develop green and biodegradable nanocomposites for wastewater treatment. The nanocomposite was characterized using FTIR, TGA, and SEM. The Batch experiments were performed to study the removal of copper and lead from aqueous solutions. The effects of the sorbent dosage, contact time, pH, and initial on the removing efficiency of the metal cations were examined. The mechanism of absorption was described via four mechanistic models Film diffusion, Weber and Morris, Dummwald-Wagner, and Bangham models. The Artificial neural network model predicted the adsorption of heavy metals ions with incredible accuracy with adsorption capacity of 250mg/g for Copper and 270 mg/g for lead. Film diffusion was identified as the rate-limiting process via mechanistic modelling.
11:00 AM Concluding Comments