Nanoparticle Synthesis & Applications – Page 53

Destruction of Organophosphate Agents by Recyclable Catalytic Magnetic Nanoparticles

Bromberg L., Hatton T.A., Massachusetts Institute of Technology, US

Organophosphorus pesticides and warfare agents are not readily hydrolyzed in aqueous media without applying extremes of pH, heat, or bleach. We show that suspensions of magnetite (Fe3O4) nanoparticles modified with a common antidote, 2-pralidoxime (PAM), [...]

Thermostability of TiO2 nanoparticle and its Photocatalytic Reactivity at Different Anatase/Rutile Ratio

Tseng Y-H, Lin H-Y, Kuo C-S, Li Y.Y., Lin H-Y, Huang C.P., Industrial Technology Research Institute, TW

Thermostability study of commercial P25 TiO2 nanoparticles was carried out by ascending annealing temperature from 400 to 1100 oC. The thermostability of TiO2 structure was measured by X-ray diffraction (XRD). Anatase-Rutile phase transition occurred only [...]

Towards the Preparation of Boron Carbide Nanorods by Carbothermal Reaction Method

Chang B., Gersten B.L., Szewczyk S.T., Adams J.W., Queens College, CUNY, US

Boron carbide (B4C) is an attractive material due to its extreme hardness, low specific weight, high chemical stability and good wear resistance. In this study, nano-sized boron carbide powders have been prepared through a carbothermal [...]

Tailoring the Surface Chemistry of Nanoparticles in Ceramic Processing

Studart A.R., Gonzenbach U.T., Amstad E., Tervoort E., Gauckler L.J., ETH Zürich, CH

The increasing use of ceramic nanoparticles for the fabrication of novel functional parts and devices has brought several new possibilities and challenges in the field of ceramics. Surface chemistry is known to play a major [...]

Synthesis and Characterization of Magnetorheological Fluids with Super Paramagnetic Nanomaterials in Polymeric Matrix

Kancharla V., Fahmi A., Liu Q., Gindy N., University of Nottingham, UK

Magneto-rheological (MR) fluids represent an exciting family of smart materials that have the unique ability to undergo rapid (within a few µs) changes in their apparent viscosity on the application of an external magnetic field. [...]

Development of Stab Resistant Body Armor using Fumed SiO2 Nanoparticles Dispersed into Polyethylene Glycol (PEG) through Sonic Cavitation

Mahfuz H., Clements F.E., Stewart J., Florida Atlantic University, US

Traditionally, the development of shear thickening fluid (STF) begins with micron size silica suspended in water. This material is transformed into STF through centrifugation and exchange processes. In other approaches polyethylene glycol (PEG) is added [...]

Functionalized Nanoporous Ceramic Sorbents for Removal of Mercury and Other Contaminants

Mattigod S.V., Fryxell G.E., Skaggs R., Parker K.E., Pacific Northwest National laboratory, US

A new class of high-performance nanoporous sorbents has been developed for heavy metal removal that overcomes the deficiencies of existing technologies. These novel materials are created from a combination of synthetic mesoporous ceramic substrates that [...]

Monometallic nano-catalysts for the reduction of perchlorate in water

Wang D.M., Lin H-Y, Huang C.P., University of Delaware, US

Perchlorate removal in a clean, cost-effective and public-acceptable approach is one of the important issues for current drinking water treatment. Catalytic membrane (CM) was prepared by coating monometallic catalysts of the nano-size onto supports by [...]

Advancements in the Supercritical Water Hydrothermal Synthesis (scWHS) of Metal Oxide Nanoparticles

Lester E., Blood P., Li J., Poliakoff M., University of Nottingham, UK

Supercritical Water Hydrothermal Synthesis (scWHS) is a relatively simple and environmentally friendly process for the production of potentially valuable metal oxide nanoparticles. This paper presents the conclusions of collaborative work between chemical engineers and chemists [...]

Synthesis of Magnetic Nanoparticles Using Spinning Disc Processing

Smith N., Raston C.L., Saunders M., Woodward R., The University of Western Australia, AU

Traditional fluid based synthesis techniques for the production of nano-materials can have limitations in particle morphology and composition selectivity. Particle size distributions can be insufficiently narrow for a deterministic investigation into the factors affecting magnetic [...]