Download or read book Synthesis and Characterization of Carbon Nanotube Supported Platinum and Titanium Dioxide Nanoparticles written by Qianqian Liu and published by . This book was released on 2011 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Platinum (Pt) supported on single-walled carbon nanotube (SWCNT) is one of the most efficient catalysts for methanol electroxidation. However, there is lack of a facile and environmental method to synthesize Pt nanoparticles on SWCNT. In the first section, I investigated a novel method to synthesize Pt nanoparticles on SWCNT using DNA molecules as dispersing agent for nanotube uniformly suspended in aqueous solutions and templates for the synthesis of Pt nanoparticles. The morphology of DNA molecules and Pt nanoparticles and their distributions along SWCNT were studied with the use of a number of electron microscopy and microanalysis techniques; electrocatalytic activities of Pt nanoparticles for methanol oxidations were characterized using cyclic voltammetry and A.C. impedance spectroscopy; and interactions among SWCNT, DNA molecules, and Pt nanoparticles were characterized by UV-visible spectroscopy. As a result, I found DNA molecules affect the synthesis of Pt nanoparticles around SWCNT and electrocatalytic activity of Pt nanoparticles supported on SWCNT for methanol oxidations. In the second section, I investigated two approaches for synthesizing carbon nanotube (CNT) coated with TiO2 nanoparticles for solar cell applications. One method used titanium sulfate (Ti (SO4)2) as a reaction precursor, and a second method employed titanium isopropoxide (Ti (OCH (CH3)2)4) as a reaction precursor. My experimental results indicate that without surface functionalization of CNT, nanotube coated with sensitizing TiO2 nanoparticles could be obtained through the selection of desirable precursors and reaction parameters-using Ti (OCH (CH3)2)4 as a reaction precursor.
Download or read book Synthesis and Characterization of Carbon Nanotube Supported Nanoparticles for Catalysis written by Ganesh Vijayaraghavan and published by . This book was released on 2007 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation describes the synthesis and characterization of nitrogen doped carbon nanotube (NCNT) supported nanoparticles for catalysis, specifically, the cathodic oxygen reduction reaction (ORR) in fuel cells. Strategies for synthesis of mono- and bimetallic nanoparticle catalysts through dendrimer based templating techniques and with the aid of metal organic chemical vapor deposition (MOCVD) precursors and efficient assembly protocols of the catalysts with the NCNTs are discussed in detail. Physicochemical properties of the NCNTs and NCNT supported catalysts were characterized using a host of tools including scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, x-ray photoelectron spectroscopy (XPS), thermo gravimetric analysis, BET surface area and pore size analysis and electrochemical techniques including cyclic voltammetry, chronocoulometry, chronoamperometry and rotating disk electrode voltammetry. Chapter 1 serves as a general introduction and provides a brief overview of challenges associated with the synthesis, characterization and utilization of graphitic carbons and graphitic carbon supported catalysts in heterogeneous catalysis. Chapter 2 provides an overview of the synthesis and characterization of systematically doped iron and nickel catalyzed NCNTs in an effort to understand the effect of nitrogen doping on ORR. Chapter 3 describes the use of NCNTs as supports for dendrimer templated nanoparticle catalysts for ORR. A facile synthetic strategy for the immersion based loading of catalysts onto NCNTs by spontaneous adsorption to achieve specific catalyst loadings is explored. Chapter 4 details the loading of monodisperse Pt, Pd and PtPd catalysts on the as synthesized NCNTs using MOCVD precursors. The MOCVD route offers promise for direct dispersion and activation of ORR catalysts on NCNT supports and eliminates a host of problems associated with traditional solvent based catalyst preparation schemes. Chapter 5 details future directions on a few topics of interest including efficient electrodeposition strategies for preparing NCNT supported catalysts, studies on PtCu catalysts for ORR and finally prospects of using NCNT supported catalysts in fuel cell applications.
Download or read book Carbon Nanotubes Synthesis Characterization and Applications written by Kamal K. Kar and published by Research Publishing Service. This book was released on 2011 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of One Dimensional Oxide Nanotubes Encapsulated with Platinum Metal Nanoparticles written by Catherine Aresipathi and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Controlled Synthesis and Characterization of One Dimensional Nanomaterials written by Hao Liu and published by . This book was released on 2010 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book TiO2 Nanoparticles written by Aiguo Wu and published by John Wiley & Sons. This book was released on 2020-06-02 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique book that summarizes the properties, toxicology, and biomedical applications of TiO2-based nanoparticles Nanotechnology is becoming increasingly important for products used in our daily lives. Nanometer-sized titanium dioxide (TiO2) are widely used in industry for different purposes, such as painting, sunscreen, printing, cosmetics, biomedicine, and so on. This book summarizes the advances of TiO2 based nanobiotechnology and nanomedicine, covering materials properties, toxicological research, and biomedical application, such as antibacter, biosensing, and cancer theranostics. It uniquely integrates the TiO2 applications from physical properties, toxicology to various biomedical applications, and includes black TiO2 based cancer theranostics. Beginning with a comprehensive introduction to the properties and applications of nanoparticles, TiO2 Nanoparticles: Applications in Nanobiotechnology, Theranostics and Nanomedicine offers chapters on: Toxicity of TiO2 Nanoparticles; Antibacterial Applications of TiO2 Nanoparticles; Surface Enhanced Raman Spectrum of TiO2 Nanoparticle for Biosensing (TiO2 Nanoparticle Served as SERS Sensing Substrate); TiO2 as Inorganic Photosensitizer for Photodynamic Therapy; Cancer Theranostics of Black TiO2 Nanoparticles; and Neurodegenerative Disease Diagnostics and Therapy of TiO2-Based Nanoparticles. This title: -Blends the physical properties, toxicology of TiO2 nanoparticles to the many biomedical applications -Includes black TiO2 based cancer theranostics in its coverage -Appeals to a broad audience of researchers in academia and industry working on nanomaterials-based biosensing, drug delivery, nanomedicine TiO2 Nanoparticles: Applications in Nanobiotechnology, Theranostics and Nanomedicine is an ideal book for medicinal chemists, analytical chemists, biochemists, materials scientists, toxicologists, and those in the pharmaceutical industry.
Download or read book Nanocatalysts written by Indrajit Sinha and published by BoD – Books on Demand. This book was released on 2019-07-31 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocatalysis is a topical area of research that has huge potential. It attempts to merge the advantages of heterogeneous and homogeneous catalysis. The collection of articles in this book treats the topics of specificity, activity, reusability, and stability of the catalyst and presents a compilation of articles that focuses on different aspects of these issues.
Download or read book Inorganic and Metallic Nanotubular Materials written by Tsuyoshi Kijima and published by Springer Science & Business Media. This book was released on 2010-06-22 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the synthesis, characterization and applications of inorganic and metallic nanotubular materials. It covers a wide variety of nanotubular materials excluding carbon nanotubes, and explains their potential for future technologies.
Download or read book Nanostructured Titanium Dioxide Materials written by Ali Reza Khataee and published by World Scientific. This book was released on 2012 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ch. 1. Introduction -- ch. 2. Properties of titanium dioxide and its nanoparticles. 2.1. Structural and crystallographic properties. 2.2. Photocatalytic properties of nanostructured titanium dioxide -- ch. 3. Preparation of nanostructured titanium dioxide and titanates. 3.1. Vapor deposition method. 3.2. Solvothermal method. 3.3. Electrochemical approaches. 3.4. Solution combustion method. 3.5. Microemulsion technique. 3.6. Micelle and inverse Micelle methods. 3. 7. Combustion flame-chemical vapor condensation process. 3.8. Sonochemical reactions. 3.9. Plasma evaporation. 3.10. Hydrothermal processing. 3.11. Sol-Gel technology -- ch. 4. Applications of nanostructured titanium dioxide. 4.1. Dye-sensitized solar cells. 4.2. Hydrogen production. 4.3. Hydrogen storage. 4.4. Sensors. 4.5. Batteries. 4.6. Cancer prevention and treatment. 4.7. Antibacterial and self-cleaning applications. 4.8. Electrocatalysis. 4.9. Photocatalytic applications of titanium dioxide nanomaterials -- ch. 5. Supported and immobilized titanium dioxide nanomaterials. 5.1. Immobilization on glass substrates. 5.2. Immobilization on stone, ceramic, cement and zeolite. 5.3. Immobilization on metallic and metal oxide materials. 5.4. Immobilization on polymer substrates
Download or read book Titanium Dioxide Nanoparticles written by Yucheng Lan and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades, titanium dioxide has been an important material for different sectors of modern technology. More precisely, this ceramic has been synthesised in the form of nanomaterial and applied in buildings, dye-sensitised solar cells, hydrogen production, sensors, rechargeable batteries, electrocatalysis, self-cleaning, environmental pollution, and antibacterial actions based on its enhanced optical properties. This book describes preparation, photocatalytic properties, and applications of nanostructured titanium dioxide with a particular focus on non-traditional syntheses and brookite. Titanium oxide nanoparticles are produced by hydrothermal processes, ionic liquid-assisted reactions, biological approaches, ball-milling techniques, etc. Physical properties and potential future applications of the produced nanostructured titanium dioxide nanoparticles are reviewed. Toxicity of titanium oxide nanoparticles and titanium oxide nanowires are also discussed.
Download or read book Synthesis and Characterization of Platinum and Carbon Nanoparticles in Benzene by an Electric Plasma Discharge in Ultrasonic Cavitation written by Rakesh Pratapbhai Chaudhary and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles are of interest due to the high number of atoms located on the surface. This high surface area is conductive to higher catalytic efficiency than normal seen in bulk metals. Of numerous nanoparticles catalysts studied, Platinum (Pt) nanoparticles have attracted particular interest due to their superior catalysis for many chemical reactions, especially for fuel cell reactions including hydrogen oxidation and oxygen reduction. Carbon supported Pt nanoparticles are active anode catalysts for fuel cells. In this thesis nano-sized Pt particles have been synthesized by an advanced and cost effective method. Pt nanoparticles embedded in carbon matrix were synthesized by an electric plasma discharge generated in the ultrasonic cavitation field of benzene. Several material characterization techniques such as Transmission electron microscopy (TEM) and X-ray diffraction (XRD) were used to study the particle size and structure of the synthesized nanoparticles. X-ray photoelectron Spectroscopy (XPS) and Energy dispersive X-ray Spectroscopy (EDX) analysis were used to study the chemical composition of the synthesized nanoparticles. Magnetic nanoparticles are of considerable interest owing to their potentials application in magnetic fluids, magnetic recording materials, biomedicine, and other applications. In particular magnetic nanoparticles offer attractive possibilities in biomedicine. The size of magnetic nanoparticles range from few nanometers up to tens of nanometers, which places them at dimensions of biological entity such as a cell, a virus, a protein and a gene. Magnetic nanoparticles can be manipulated using an external magnetic field, which provides applications such as tagging of biomolecules, efficient bioseparation, sensitive biosensing, magnetic resonance imaging and drug delivery. These applications require particles to be biocompatible, stable and biodegradable. Carbon nanoparticles are potentially biocompatible, chemically stable and nontoxic .In this work Graphite nanoparticles and iron doped carbon nanoparticles were synthesized by an electric plasma discharge generated in the ultrasonic cavitation field of benzene. Several material characterization techniques such as High Resolution Transmission Electron Microscopy (HRTEM) and XRD were used to study the particle size and structure of the synthesized nanoparticles. XPS and EDX analysis were used to study the chemical composition of the synthesized nanoparticles. Raman spectroscopy was used to characterize carbon nanoparticles. Magnetic measurement of iron doped carbon and graphite nanoparticles were measured using Vibrating sample magnetometer (VSM).
Download or read book Carbon Nanomaterials written by Yury Gogotsi and published by CRC Press. This book was released on 2013-10-24 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides information on synthesis, properties, and applications of carbon nanomaterials. With novel materials, such as graphene (atomically flat carbon) or carbon onions (carbon nanospheres), the family of carbon nanomaterials is rapidly growing. This book provides a state-of-the-art overview and in-depth analysis of the most important ca
Download or read book Synthesis and Characterization of Supported Nickel Nanoparticles on Titanium Dioxide Using Reverse Micelles written by Mihir Mahendra Kulkarni and published by . This book was released on 2017 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Anthology on Synthesis Characterization and Applications of Nanomaterials written by Management Association, Information Resources and published by IGI Global. This book was released on 2021-03-19 with total page 1917 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of nanotechnologies continues to grow, as nanomaterials have proven their versatility and use in many different fields and industries within the scientific profession. Using nanotechnology, materials can be made lighter, more durable, more reactive, and more efficient leading nanoscale materials to enhance many everyday products and processes. With many different sizes, shapes, and internal structures, the applications are endless. These uses range from pharmaceutics to materials such as cement or cloth, electronics, environmental sustainability, and more. Therefore, there has been a recent surge of research focused on the synthesis and characterizations of these nanomaterials to better understand how they can be used, their applications, and the many different types. The Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials seeks to address not only how nanomaterials are created, used, or characterized, but also to apply this knowledge to the multidimensional industries, fields, and applications of nanomaterials and nanoscience. This includes topics such as both natural and manmade nanomaterials; the size, shape, reactivity, and other essential characteristics of nanomaterials; challenges and potential effects of using nanomaterials; and the advantages of nanomaterials with multidisciplinary uses. This book is ideally designed for researchers, engineers, practitioners, industrialists, educators, strategists, policymakers, scientists, and students working in fields that include materials engineering, engineering science, nanotechnology, biotechnology, microbiology, drug design and delivery, medicine, and more.
Download or read book Titanium Dioxide Nanomaterials Volume 1352 written by Xiaobo Chen and published by Materials Research Society. This book was released on 2011-11-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanium dioxide nanomaterials have been showing very promising applications in many fields. Scientists from all over the world have gathered together to discuss the most recent advances in areas spanning from theoretical calculations to fundamental surface science and to materials fabrication, characterization and practical exploitation. More than 160 papers, presentations and posters, were accepted in Symposium GG, "Titanium Dioxide Nanomaterials," at the 2011 MRS Spring Meeting held April 25-29 in San Francisco, California. In this volume are some of the selected papers which cover the synthesis, properties, and applications of titanium dioxide nanomaterials.
Download or read book Synthesis and Characterization of Metal Nanoparticles by Using Carbon Nanotube Templates written by Bin Xue and published by . This book was released on 2000 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuel Cell Engineering written by and published by Academic Press. This book was released on 2012-08-14 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel cells are attractive electrochemical energy converters featuring potentially very high thermodynamic efficiency factors. The focus of this volume of Advances in Chemical Engineering is on quantitative approaches, particularly based on chemical engineering principles, to analyze, control and optimize the steady state and dynamic behavior of low and high temperature fuel cells (PEMFC, DMFC, SOFC) to be applied in mobile and stationary systems. Updates and informs the reader on the latest research findings using original reviews Written by leading industry experts and scholars Reviews and analyzes developments in the field
