Download or read book Synthesis of Modified Zinc Oxide Nanoparticles Using Pneumatic Spray Pyrolysis for Solar Cell Application written by Luyolo Ntozakhe and published by . This book was released on 2017 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyrolysis of Carbon Doped ZnO Nanoparticles for Solar Cell Application written by Luyolo Ntozakhe and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is very important to find new methods for improving the properties of nanostructured materials that can be used to replace the highly expensive and complicated techniques of fabricating ZnO nano-powders for solar cell applications. Pneumatic spray pyrolysis method offers a relatively inexpensive way of fabricating ZnO nanomaterials of controllable morphology, good crystallinity and uniform size distribution, which makes it a good candidate for the production of ZnO nanoparticles. Additionally, it has the advantage of producing ZnO NPs in one step directly on the substrate without the need for other wet chemistry processes like purification, drying and calcination. To that end, the present study emphasizes more on the design and optimization of spray pyrolysis system as well as on the pneumatic spray pyrolysis conditions for the production of carbon-doped ZnO nanoparticles. The un-doped and carbon-doped ZnO NPs were prepared using pneumatic spray pyrolysis employing zinc acetate as a precursor solution and tetrabutylammonium as a dopant. The fabricated un-doped and C-ZnO NPs were characterized for their morphological, structural and optical properties using SEMEDX, XRD and DRS. SEM analysis has revealed that the fabricated un-doped and C-ZnO NPs have spherical shape with mesoporous morphology. The cross-sectional SEM has also revealed that the film thickness changes with increasing dopant concentration from 0.31 to 0.41¬†Œom at higher concentrations. Moreover, the EDX spectra have confirmed the presence of Zn and O atoms in the PSP-synthesized ZnO NPs. XRD analysis of both un-doped and C-ZnO has revealed the peaks belonging to hexagonal Wurtzite structure of ZnO. Additionally, the DRS has revealed a decrease in energy band gap of the synthesized ZnO NPs, with the increase in carbon dopant level.
Download or read book Multifunctional Oxide Based Materials From Synthesis to Application written by Teofil Jesionowski and published by MDPI. This book was released on 2019-09-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with novel aspects and perspectives in metal oxide and hybrid material fabrication. The contributions are mainly focused on the search for a new group of advanced materials with designed physicochemical properties, especially an expanded porous structure and defined surface activity. The proposed technological procedures result in an enhanced activity of the synthesized hybrid materials, which is of great importance when considering their potential fields of application. The use of such materials in different technological disciplines, including aspects associated with environmental protection, allows for the verification of the proposed synthesis method. Thus, it can be stated that those aspects are of interdisciplinary character and may be located at the interface of three scientific disciplines—chemistry, materials science, and engineering—as well as environmental protection. Furthermore, the presented scientific scope is in some way an answer to the continuous demand for such types of materials and opens new perspectives for their practical use
Download or read book Zinc Oxide Based Nano Materials and Devices written by , Prof. Dr. Ahmed Nahhas and published by BoD – Books on Demand. This book was released on 2019-10-09 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a review of recent advances in ZnO-based nanomaterials and devices. ZnO as a nanomaterial has gained substantial interest in the research area of wide bandgap semiconductors and is considered to be one of the major candidates for electronic and photonic applications. ZnO has distinguished and interesting electrical and optical properties and is considered to be a potential material in optoelectronic applications such as solar cells, surface acoustic wave devices, and UV emitters. ZnO's unique properties have attracted several researchers to study its electrical and optical properties. As a nanostructured material, ZnO exhibits many advantages for nanodevices. Moreover, it has the ability to absorb the UV radiation.
Download or read book Zinc Oxide Nanostructures Synthesis and Characterization written by Sotirios Baskoutas and published by MDPI. This book was released on 2018-12-04 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Zinc Oxide Nanostructures: Synthesis and Characterization" that was published in Materials
Download or read book Synthesis of Zinc Oxide by Sol Gel Method for Photoelectrochemical Cells written by Siti Salwa Alias and published by Springer Science & Business Media. This book was released on 2013-11-20 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the study of synthesized ZnO powder using Zn(CH3COO)2∙2H2O precursor, methanol (as solvent), and sodium hydroxide (NaOH) to vary the pH. The successfully synthesized ZnO powder from the sol-gel centrifugation and sol-gel storage methods were characterized and investigated by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, UV–visible spectroscopy, and photoluminescence test to compare the properties of the nanoparticles. The best characteristic of the ZnO powder from both methods was observed when the powders were coated on an ITO glass to fabricate a PEC. The current density–voltage performances of both PECs were investigated under luminescent and dark conditions.
Download or read book Advanced Spray Deposited Zinc Oxide Thin Films written by Prashant S. Shewale and published by LAP Lambert Academic Publishing. This book was released on 2015-03-17 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the years, the spray pyrolysis method has been used to deposit thin films of metal oxides and chalcogenide semiconductors. It is well known that the substrate temperature is the central parameter in spray pyrolysis that determines the physical and chemical properties of the deposits. However, somewhat high growth temperatures applied during the spray pyrolysis derived synthesis of metal oxide thin films may limit the surface-to-volume ratio requisite for their reasonable gas sensing characteristics. Thus, there is a strong drive to modify the spray pyrolysis technique in terms of growth temperature by retaining its inherent advantages. The present book is focussed on the effort to modify the conventional spray pyrolysis technique into novel route of advanced spray pyrolysis to synthesize the undoped and doped ZnO nanocrystalline thin films at relatively low substrate temperature and investigation of the effects of various preparative parameters and dopant incorporations, on the film properties such as crystallinity, surface morphology, the electrical and hydrogen sulphide (H2S) gas sensing properties.
Download or read book Nanofabrication written by Kamal Prasad and published by CRC Press. This book was released on 2024-09-13 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nature, with its unassuming yet prodigious character, unfolds its assembly and adaptability guided by the principles of thermodynamics and supramolecular chemistry. Every entity in nature, regardless of its form, adheres to these fundamental principles. From individual metabolites to ordinary molecules, each possesses inherent potential for nanomaterial synthesis. This book meticulously compiles diverse green approaches that highlight nature's synthetic prowess and its lavish abundance in nanomaterial synthesis, showcasing potential applications. It unveils the lucrative pathways nature provides for cutting-edge advancements in synthetic methodologies and material applications.
Download or read book Synthesis of Metal oxide Nanoparticles by Ultrasonic Spray Pyrolysis written by Rebeka Rudolf and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Stabilization and Modification of Zinc Oxide Nanoparticles for Biological Applications written by Allison Kimberly Freese and published by . This book was released on 2019 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles have become very useful as delivery systems in biomedicine. The nanoparticles can be layered with different compounds to produce a vessel for transport of biological materials. Specifically, gold nanoparticles layered with a reducing agent, lysozyme, and polyelectrolytes can be synthesized to transport lysozyme into a cell. However, zinc oxide nanoparticles are cheaper, biocompatible nanoparticles that can be used for the same process. Here in, zinc oxide nanoparticle conjugates were synthesized, modified, and analyzed to be used as a biological material delivery system. The zinc oxide nanoparticles were synthesized using zinc chloride and sodium hydroxide. The particles were then layered using the layer-by-layer technique of adding each compound to the nanoparticle solution dropwise. Each deposition was bound by the interaction of the opposite charges of the compounds being added. The layers used were mercaptoundecanoic acid (MUA), poly(ethylenimine) (PEI), polystryrene sulfonate (PSS), and RNA or lysozyme ordered specifically to have a high affinity for binding each layer. With each deposition added to the system, the following instruments were used to characterize the particles: Dynamic Light Scattering Spectroscopy (DLS) and Scanning Electrons Microscopy (SEM) for particle sizing, Electrophoretic Mobility (ELS) for zeta potential and surface charge, and UV-Vis spectrophotometer and FTIR spectroscopy for optical properties. Furthermore, after the layering process was completed, the biological material encapsulated was tested to assure its effectiveness once transported into the cell. This was completed using an enzymatic assay for lysozyme and an ethidium bromide assay for RNA. After characterization was completed, all three nanoparticle conjugates were concluded to be successfully synthesized.
Download or read book Nanoparticles for Biomedical Applications written by Eun Ji Chung and published by Elsevier. This book was released on 2019-11-19 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles for Biomedical Applications: Fundamental Concepts, Biological Interactions and Clinical Applications brings into one place information on the design and biomedical applications of different classes of nanoparticles. While aspects are dealt with in individual journal articles, there is not one source that covers this area comprehensively. This book fills this gap in the literature. - Outlines an in-depth review of biomedical applications of a variety of nanoparticle classes - Discusses the major techniques for designing nanoparticles for use in biomedicine - Explores safety and regulatory aspects for the use of nanoparticles in biomedicine
Download or read book Zinc Oxide Nanostructures written by Magnus Willander and published by CRC Press. This book was released on 2014-07-22 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) in its nanostructured form is emerging as a promising material with great potential for the development of many smart electronic devices. This book presents up-to-date information about various synthesis methods to obtain device-quality ZnO nanostructures. It describes both high-temperature (over 100 C) and low-temperature (under
Download or read book The Nanotechnology Challenge written by David A. Dana and published by Cambridge University Press. This book was released on 2011-11-14 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology is the wave of the future, and has already been incorporated into everything from toothpaste to socks to military equipment. The safety of nanotechnology for human health and the environment is a great unknown, however, and no legal system in the world has yet devised a way to reasonably address the uncertain risks of nanotechnology. To do so will require creating new legal institutions. This volume of essays by leading law scholars and social and physical scientists offers a range of views as to how such institutions should be formed. It is essential reading for anyone who may wonder how we can continue to innovate technologically in a way that both delivers the benefits and sustains human health and the environment.
Download or read book Synthesis of the Oxide and Metal oxide Nanoparticles by the Ultrasonic Spray Pyrolysis written by Jelena Bogovic and published by . This book was released on 2014 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Controlled Synthesis of Mixed Oxide Nanoparticles by Flame Spray Pyrolysis written by Rainer Jossen and published by . This book was released on 2006 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of the Oxide and Metal oxide Nanoparticles by the Ultrasonic Spray Pyrolysis written by Jelena Bogovic and published by . This book was released on 2014 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Applications in Sol Gel Synthesis written by Usha Chandra and published by BoD – Books on Demand. This book was released on 2017-07-05 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Versatility, extended compositional ranges, better homogeneity, lesser energy consumption, and requirement of nonexpensive equipments have boosted the use of sol-gel process on top of the popularity in the synthesis of nanosystems. The sol-gel technique has not only revolutionized oxide ceramics industry and/or material science but has also extended widely into multidimensional applications. The book Recent Applications in Sol-Gel Synthesis comprises 14 chapters that deal mainly with the application-oriented aspects of the technique. Sol-gel prepared metal oxide (MO) nanostructures like nanospheres, nanorods, nanoflakes, nanotubes, and nanoribbons have been employed in biomedical applications involving drug deliveries, mimicking of natural bone, and antimicrobial activities. The possibility of controlling grain size in aerogel and preparation of ultrahigh-temperature ceramic (UHTC)-based materials, fluorescent glasses, ultraviolet photosensors, and photocatalysts have been discussed in detail by the experts in the field. The usefulness of sol-gel materials as active GRIN, as textile finisher, and as leather modifier with water-repellent and oil-resistive properties would be an incentive for researchers keen to pursue the field.
