Papers – Page 65 – TechConnect Briefs

One-pot Ultrafast Synthesis of Stable and Surface Functionalized Nanoparticles

Klaumünzer M., Hübner J., Wolfrum C., Kryschi C., Peukert W., University Erlangen-Nürnberg, DE

An ultrafast and simple one step synthesis of noble metal nanoparticles and semiconducting metaloxide nanoparticles with aminoblockcopolymer O,O’- Bis (2-aminopropyl) polypropylene glycol- block- polyethylene glycol- block- polypropylene glycols (Jeffamine; 1900 g/mol) is reported. No additional [...]

Synthesis method for well crystallized alloy nanoparticles in aqueous solution under room temperature by controlling the metal complexes condition

Takahashi H., Mabuchi T., Yokoyama S., Tohji K., Tohoku University, JP

In the case of usual nanoparticles synthesis method, the as-prepared metallic nanoparticles often exhibited inhomogeneous compositions and multi-crystalline structures, which does not adequate for the industrial applications. Therefore, in this study, to develop the synthesis [...]

“In-Situ” Monitoring of CdSe/ZnS Quantum Dot Growth During Microwave Synthesis

Zane A., McCracken C., Knight D., Waldman W.J., Dutta P., The Ohio State University, US

The microwave synthesis of CdSe/ZnS quantum dots was observed in real-time using fluorescence spectroscopy for the first time. This technique was used as an efficient way to optimize the temperature and time of the synthesis, [...]

Mass Production of Metal Oxide Nanoparticle Dispersion for Heat-ray Shielding Application

Shen Z., Soh W., Zhang J., Wang A., Chen J., Chen W., Yun J., Sher D., Chen J., Chen W., NanoMaterials Technology Pte Ltd, SG

A unified approach, HGCP process was applied to produce various metal oxide nanoparticle dispersion with low cost. The process involved achieving instantaneous molecular mixing for metal salts and precipitant reactants by using HGCP reactor to [...]

Green synthesis of noble metal and bimetal nanosols and their applications as catalysts

Blosi M., Ortelli S., Albonetti S., Costa A.L., Ortolani L., Dondi M., Istec-CNR, IT

We report an environmentally benign approach to the production of stable metals nanosols. Water has been chosen as benign solvent, glucose serve as a mild, renewable and non-toxic reducing agents and microwave irradiation was used [...]

Precipitation of In(OH)3 and InOOH Nanocrystals for the use in nanoelectronics: Phase Transition Behavior and Oriented Aggregation

Klaumünzer M., Mackovic M., Ferstl P., Voigt M., Spiecker E., Meyer B., Peukert W., University Erlangen-Nürnberg, DE

With respect to diverse applications in the wide field of nanoelectronics we characterize a specific phase transition behavior and oriented aggregation (OA) during wet chemical synthesis of In(OH)3 nanocrystals as a wide band gap material [...]

Morphological change from nano-cube to nano-sphere by addition of Ni to W in RF thermal plasma synthesis

Kim Y.M., Na H., Lee B.J., Lee W., Lee B.J., Lee W., Hwang N.M., Choi H., Korea Institute of Industrial Technology, KR

Pure W and W-Ni nano-particles were effectively synthesized by feeding thermo-physically favorable oxide feedstock micro-powder into argon-hydrogen thermal plasma. During the process, feedstock particle underwent a vaporization, reduction, and condensation pathway. Significant amount of nano-cube [...]

Carbon Nanotube Dispersion : Science or Art?

Nguendia Zeuna J., Zhong W., Claverie J., Quebec Center for Functional Materials, NanoQAM, CA

We have developed a series of strategies to unravel the mechanism of adsorption of surfactants and polymeric dispersants onto SWNT and MWNT. Using these guidelines, we have prepared a novel series of polymeric surfactants that [...]

Correlating electrical and structural properties in surface layer of carbon nanotube polymer composite

Pavlenko E., Tishkova V., Puech P., Bacsa W.S., CNRS and University of Toulouse, FR

We have recently shown that annealing of agglomerated carbon nanotubes on thermoplast polymers form surface composite films (70 micrometers) (1). This has been explained by preferential carbon nanotubes absorption of infrared radiation leading to local [...]

Fabrication of polymer nanocomposites based on CNTs in PDMS matrix

Imbaby M., Gottschalk K., Ulm University, DE

This research presents a new approach to fabricate polymer/carbon nanotubes (CNT) nanocomposites. Multiwall carbon nanotubes with 6-9 nm diameter and 1.5 um length is used. Polydimethysolixane (PDMS), Acetone, and Polyethylene oxide (PEO) are used as [...]