Papers – Page 655 – TechConnect Briefs

Separation Mechanisms for Nanoscale Spheres and Rods in Field-Flow Fractionation (FFF)

A Brownian dynamics simulation for modeling the separation of spheres and rodlike particles in field-flow fractionation (FFF) is developed. Modeling of particle elution for spheres from (10 to 1000) nm was examined. The simulation captures [...]

Multi-Functional Carbon Nanotube Based Filtration Material

Cummings A., Seldon Technologies, Inc., US

The very small diameters of carbon nanotubes (CNTs) present relatively low resistance to fluid flow. This, combined with their high surface area, means that highly-efficient, bio-contaminant removals are possible with a thin filtration media possessing [...]

Characterization of Activated Carbon particles for nanocomposite synthesis

Terrazas-Bandala L.P., Zaragoza-Contreras E.A., González-Sánchez G., Ballinas-Casarrubias M.L., Advanced Materials Research Center (CIMAV), MX

Activated carbon from inexpensive sources has been of great interest for separation systems, efforts had been made to produce AC nanoparticles by different means, in the aim to integrate them to composite materials to enhance [...]

Growth and characterization of CNT Forests using Bimetallic Nanoparticles as Catalyst

Lee B.J., Lee G.S., Lee K.H., Sra A.K., Jang H.-S., Lee B.J., Lee G.S., Lee K.H., Overzeta L., Yang D.J., Lee B.J., Lee G.S., Lee K.H., The University of Texas at Dallas, US

In this poster, we will discuss about a simple efficient way of producing bimetallic FePt, FeCo alloy nanoparticles that are used as catalysts for continuous growth of forests of MWCNTs by PECVD or thermal CVD [...]

MWCNTS Production by Means of Pyrolysis of Polyethylene-Terephtalate in a Bubbling Fluidized Bed

Mastellone M.L., Arena U., Second University of Naples, IT

A bubbling fluidized bed reactor having 102mmID and realised in AISI 316L stainless steel has been used as pyrolyser under different operating conditions. The reactor has been operated at fixed fluidising velocity (U=0.16m/s) and at [...]

Novel Reactor Utilizing Selective Heating Catalytic Nanoparticles for Low-Temperature Growth of Carbon Nanotubes

Vasenkov A.V., Kolobov V.V., Carnahan D., CFD Research Corporation, US

Chemical Vapor Deposition (CVD) of carbon nanotubes (CNTs) and carbon nanofibers (CNFs) is a catalytically controlled synthesis requiring catalyst temperatures in excess of 700°C. The CVD synthesis is typically accompanied by significant substrate heating which [...]

One-Step Flame-Synthesis of Carbon-Embedded and -Supported Platinum Clusters

Ernst F.O., Büchel R., Strobel R., Pratsinis S.E., ETH Zürich, CH

Carbon-embedded or -supported Pt-clusters were made by a scalable, single-step flame spray pyrolysis (FSP) process. Pt-containing precursors was dissolved in xylene and sprayed and combusted in a controlled oxidation atmosphere resulting in nanostructured, carbon-embedded Pt-clusters. [...]

Ways to Increase the Length of Single Wall Carbon Nanotubes in a Magnetically Enhanced Arc Discharge

Keidar M., Levchenko I., Shashurin A., Waas A.M., Ostrikov K., The George Washington University, US

It is demonstrated that the magnetic field has a profound effect on the length of a single wall carbon nanotube (SWNT) synthesized in the arc discharge. An average length of SWNT increases by a factor [...]

Simultaneous Tip and Base Growth of Carbon Nanotubes Produced by RF Plasma Enhanced CVD

García-Céspedes J., Pascual E., Bertran E., IN2UB, Universitat de Barcelona, ES

In this work, carbon nanotubes (CNTs) with curly and straight segments were synthesized by means of radio-frequency plasma enhanced chemical vapour deposition (rf-PECVD) onto silicon substrates, using Fe as the catalyst material. The origin of [...]

Conducting Polymer Nanocomposites: Role of DNA Functionalized Carbon

Cheung W., Bogozi A., Ma Y., Mao G., Mao G., He H., Rutgers University, US

In this work, a water-soluble self-doped polyaniline nanocomposite was fabricated by in-situ polymerization of 3-aminophenylboronic acid monomers in the presence of single-stranded DNA dispersed- and functionalized- single-walled carbon nanotubes. For the first time, we found [...]