Papers:
Nano-Silicon and Non-Oxide Ceramics Synthesis via Gas-phase Sodium Reduction Aerosol Reactor
The largest volumes of nano-particles in consumer products include carbon black for reinforcement applications (e.g. tires), silicon dioxide (SiO2) as rheology agent (e.g. silicones) and titanium dioxide (TiO2) in pigments and photocatalysts. All of those [...]
Uniform Melt State Process For The Production Of Nanostructured Materials
Existing processes for the production of nanostructured composite materials suffer from non-homogeneity of feedstock and non uniformity of thermal processing path. Amastan’s UniMelt™ process solves both problems through the use of uniform temperature profile microwave [...]
Preparation of Photocatalytic Silicon Core-shell Nanoparticles Covered by ZnS Shell in Solid-Gas Reaction
Dvorsky R., Praus P., Svoboda L., Matýsek D., Dropa T., Trojková J., Šollová K., VŠB-Technical University of Ostrava, CZ
For easy handling in some practical processes, active nanoparticles are usually deposited on surfaces of larger carrier particles. In our previous work, the particles of montmorillonite MMT with a mean size of 300 nm served [...]
Flame Synthesized Nanostructured WO3 Thin Films for Photoelectrochemical Water Splitting
Tungsten oxide has been considered as a promising photoanode material for photoelectrochemcial water-splitting techonologies due to its ralatively favorable band gap position and good charge transport property and stablity in aqueous solution. Typically, 1-dimentional structure [...]
A High-throughput Electrospray Nozzle for Nanoparticle Production
Electrospray is well-known for its capability of producing monodisperse particles with sizes ranging from a few nanometers to micrometers. Even though electrospray has been used in a wide range of research areas, its low throughput [...]
Synthesis and Characterization of Copper (i) Oxide and Zinc Oxide Quantum Dot Materials and the Development of New Fluorescent Fibre Composites
New fluorescent composites of Cu2O and ZnO quantum dots with wool and paper fibres for potential use in photoluminescent fabrics, packaging and labelling papers, have been developed. The fluorescent colours can be tuned by varying [...]
Synthesis and characterization of nanoreactors within polymeric nanotemplates
McTaggart M., Groves M., Malardier-Jugroot C., Jugroot M., Malardier-Jugroot C., Royal Military College of Canada, CA
The paper will present a novel method for the synthesis of metal nanoclusters with diameters < 3nm within an amphiphilic nanotube template without the use of a reducing agent. This environmentally friendly synthesis occurs at [...]
Stabilization of mono- and bimetallic nanoparticles in ionic liquids
Metallic nanoparticles (NPs) are needed in a range of applications such as the fabrication of advanced microelectronic, magnetic or optical devices. Hence, substantial effort has been centered on stabilizing transition-metal nanoparticles in wet synthesis processes, [...]
Nanoparticles: Synthesis and Film Deposition Using a Simple and Fast Centrifuge Sedimentation Method
Gold nanoparticles were prepared by reduction of gold cations suspended in sodium bis(2-ethylhexyl)sulfosuccinate (AOT) water-in-hexane microemulsions with another AOT microemulsion containing a reducing agent NaCNBH3. The size of the Au nanoparticles can be controlled by [...]
Novel Syntheses of Silica-Gold Core-Shell Particles
Methods for the synthesis of silica-gold core-shell particles presented in literature are not considered commercially viable due to various requirements: high reaction temperatures, the use of light-sensitive reagents, the use of ex-situ gold seeding adding [...]
Synthesis of nanocrystalline cubic ZrO2:Mn2+ phosphors: Structural and luminescent properties
Nanocrystalline cubic zirconia doped with manganese, solid solutions of Zr1-xMnxO2-x/2 (x=0, 0.1, 0.2 and 0.4), were prepared by the sol-gel method. The Rietveld refinement of the X-ray powder diffraction (XRD) profile of the samples confirms [...]
Synthesis of Poly(ST-co-COPSI)particles by soap-free emulsion copolymerization and its optical properties as photonic crystals
Highly charged, submicron-sized polymeric colloidal particles can self assemble into 3-dimentional(3D) opal structure which is useful template for photonic crystal. In this report, optical properties of poly[Styrene(ST)-co-Allyloxy-2-hydroxypropane sulfonic acid sodium salt(COPSI)] polymeric microspheres with number [...]
A Study of Particle Size Distribution in NPP process
Noble nanoparticles were fabricated on glucose powder by NPP process, in which nanoparticles were formed on the rotating powder in barrel by using conventional PVD system. A 500 um glucose powders were selected as the [...]
Water Synthesis of Glutathione- capped Cadmium Selenide Quantum Dots and Stabilization by PVP coating at Room Temperature
Arroyo-Vizcarrondo S.A., Beltran-Huarac J., Morell G., Primera-Pedrozo O.M., Universidad Metropolitana, US
Various nanomaterials have been developed throughout the decades, but quantum dots (QDs) have represented one of the successful new biological probes due to their optical properties coming from the semiconductor core material. CdSe QDs were [...]
Controlled Synthesis of Monodisperse Magnetic Porous/Hollow Nanostructures for Biomedical Applications
Recently, studies on therapeutic applications of the magnetic nanoparticles have gained more momentum. The use of magnetic nanoparticles for hyperthermia has shown great promise in the field of nanobiomedicine. The porous/hollow structure also exhibited a [...]
Drug delivery system based on inorganic layered materials
Layered Double Hydroxides (LDHs) are well known inorganic carriers which have been explored during the development of new materials for medicinal and pharmacological applications. The solubility and chemical stability of guest species can be increased [...]
Hydroxylamine-O-sulfonic acid as a New Reducing Agent for the Formation of Nearly Monodisperse Gold Nanoparticles in water: Synthesis Characterisation and Bioconjugation
Gold nanoparticles (Au NPs), with diameters ranging between 60-150 nm, have been synthesised in water at room temperature by reducing HAuCl4.3H2O with hydroxylamine-o-sulfonic acid in the presence of sodium citrate, as stabilising agent. 15 and [...]
Ambient Temperature Synthesis and Sintering of Conductive Aqueous Copper Inks
Conducting films are becoming increasingly important for the printed electronics industry with applications in various technologies including antennas, RFID tags, photovoltaics, flexible electronics and displays. To date, expensive noble metals have been utilized in these [...]
ZnO nanorods decorated with Au nanoparticles applied as gas sensors
Gasparotto G., Mazon T., Gasparotto G., Silva R.A., Zaghete M.A., Perazolli L.A., Varela J.A., CTI, BR
Zinc oxide (ZnO) is a n-type semiconductor with energy band gap of 3:37 eV and a large binding energy of 60 meV at room temperature. ZnO nanostructures can be easily obtained with different morphologies by [...]
Funcional lead-free composite
Teixeira G.F., de Oliveira J.A.M., Zaghete M.A., Longo E., Varela J.A., Chemistry Institute, UNESP- Araraquara, BR
In the work reported here was obtained a lead-free NaNbO3 / PVDF composite, starting from photoluminescent ceramics particles with 1D morphology obtained by microwave-assisted hydrothermal method. Photoluminescence spectrum of the NaNbO3 particles shown emission around [...]
Green, Cubic Y2O3: Tb3+ Nanospheres: Synthesis and Photoluminescence Property
Miao H., Hu X.Y., Sun Q., Sun X., Wang Z.Z., Sun Q., Sun X., Zhang D.K., Bai J.T., Hou X., Northwest University, CN
Tb3+-doped Y2O3 green nanospheres were prepared via the simple, cost-effective urea homogeneous precipitation method without additives. Nanospheres were characterized by X-ray diffraction, Scanning electron microscope, Photoluminescence spectroscopy. The specimens annealed above 800oC are well matched [...]
Controllable Synthesis of Monodisperse CaF2 microsphere and the investigation on luminous performance of CaF2:Ce3+/Tb3+
Sun Q., Sun X., Hu X.Y., Fan J., Zhan S.C., Wang Y., Wang Z.Z., Wang Y., Wang Z.Z., Sun Q., Sun X., Hao Y.Y., Northwest University, CN
Highly uniform and well-dispersed CaF2 microsphere and hollow spheres with tunable particles size (100nm-900nm) have been successfully synthesized by a facile hydrothermal process using ethylenediaminetetraacetic acid disodium as a complexing reagent. The XRD results indicated [...]
Round Monodisperse Nanodiamonds: Towards Highly Bright, Biologically Inert Probes for Fluorescence Imaging
Rehor I., Slegerova J., Havlik J., Stursa J., Petrakova V., Turner S., Van Tendeloo G., Dai L., Richter J., Fiserova A., Cigler P., IOCB AS CR, CZ
Fluorescent nanodiamonds (FNDs) are extremely promising luminescent probes and sensors in biomedical research, possessing unique properties such as absolute photostability and high biocompatibility. Here we present a complex route towards bioapplicable FNDs. First we developed [...]
Toxicity and Pharmacokinetics of uPAR-targeted Human ATF-conjugated Iron Oxide Nanoparticles Following Systemic Delivery in Rhesus Monkey
Increasing evidence support the potential of a novel cell surface receptor-targeted MRI nanoprobe produced by conjugating a recombinant peptide amino-terminal fragment (ATF) of urokinase plasminogen activator (uPA) to magnetic iron oxide nanoparticles (IONP) in targeted [...]
Rapid and Controlled Transition of Magnetic Nano- to Micro-particles: A Useful Feature for Bioseparations
This work describes the use of stimuli-responsive polymers to control the transition of magnetic nanoparticles (mNPs) to magnetic microparticles. Compared to magnetic microparticles, mNPs are advantageous for bioseparations (e.g., immunoassays, immunoprecipitations) for two reasons. They [...]
Monodisperse Thermo-responsive Composite Microgels with Core-shell Structure based on Au@Ag Bimetallic Nanorod as Core: Fabrication and Application in SERS Substrate
In summary, monodisperse Au@Ag bimetallic nanorod is encapsulated by crosslinked poly(N-isopropylacrylamide) (PNIPAM) to produce thermo-responsive composite microgel with well-defined core-shell structure (Au@AgNR@PNIPAM microgel) by seed-precipitation polymerization method using butenoic acid modified Au@AgNRs as seeds. Their [...]
A Comparative Study on Sorption of As (V) ions on Hematite, Goethite and Magnetite Nanoparticles
Hematite (-Fe2O3), magnetite (Fe3O4) and goethite (-FeOOH) nanoparticles were synthesized by transformation of ferrihydrite and precipitation methods, this materials were used for the removal of arsenic (V) ions from aqueous solution. The synthesized nanoparticles were [...]
Development of a Platinum Nanoparticle based Microcombustor Power Device
Microcombustors coupled with thermoelectric devices have the potential to provide a prolonged power source for portable devices as opposed to conventional batteries due to significantly higher energy densities. Recharging then can be easily achieved by [...]
CO2 reforming of CH4 by the combination of dielectric barrier discharge plasmas and zeolite catalysts
Dry reforming of two green-house gases (CH4 and CO2) to convert to syngas (mixture of CO and H2) has gained deep research interests lately. Several technologies were proposed to convert the CO2 and CH4, such [...]
Evaluation of the Potential Synergistic Antimicrobial Effects Observed using Various Combinations of Chemical Agents (Nanoparticled and Non-Nanoparticled) on a Selected Panel of Cheese Derived Microorganisms
The aim of the this study was to examine the antimicrobial effectiveness of a number of agents (nanoparticled and non-nanoparticled) applied individually and in combination to cheese derived cultures to determine their suitably as active [...]
Microwave Initiated Nucleation for the Synthesis of High Quality Nanocrystalline Quantum Dot Materials
Kim K-J, Chang C.H., Haben P.M., Peterson D.A., Novet T.E., Schut D.M., Shoei Electronic Materials, Inc., US
The colloidal synthesis of nanoparticles, specifically quantum dots, may occur through either a kinetically dominated process where nucleation proceeds rapidly followed by growth via coalescence of nucleates to form larger nanoparticles, or through a thermodynamically [...]
Synthesis and Characterization of a Novel Palladium Nanostructured Ensemble Supported in Anodized Alumina Membranes for Hydrogen Sensing Applications
A Pd/Anodic alumina membrane (AAM) ensemble was formed by using Solid State Reduction. The ensemble consisted of Pd thin films on both sides of the AAM with connecting nanowires as evidenced with Scanning Electron Microscopy [...]
Influence of applying the additional continuous laser on photoluminescence properties of silicon nanoparticles produced by laser ablation in liquid
Silicon nanoparticle (Si-NPs) is attracting attention of authors in numerous fields of science. The photoluminescence properties of Si-NPs make them a candidate for biomaging applications. The one of the most promising and the simplest method [...]
Synthesizing and Consolidation of Mechanically-Induced Solid-State Reacted Ti50C50 Nanopowders and Subsequent Consolidations
Sherif El-Eskandarany M., Al-Hazza A., Shaban E., Alduweesh A., Al-Rowayeh A., Kuwait Institute for Scientific Research, KW
In contrast to the industrial approach for preparing such important materials, we have succeeded to synthesize a single phase of Ti50C50 nanopowders, using high-energy ball milling technique. The ball milling procedure took place at ambient [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2014: Graphene, CNTs, Particles, Films & Composites
Published: June 15, 2014
Industry sector: Advanced Materials & Manufacturing
Topic: Nanoparticle Synthesis & Applications
ISBN: 978-1-4822-5826-4