Báo cáo hóa học: " Synthesis of multi-walled carbon nanotube/ polyhedral oligomeric silsesquioxane nanohybrid by utilizing click chemistry" pptx

... spectra of nanohybrid. (a) TEM images of MWNT-POSS nanohybrid and (b) EDX spectra of MWNT- POSS nanohybrid. Figure 5 XPS spectra of MWNT-POSS nanohybrid. (a) Wide scan spectra of MWNT-POSS nanohybrid ... on multiwalled carbon nanotubes. Macromolecules 2009, 42:5416. doi:10.1186/1556-276X-6-122 Cite this article as: Yadav et al.: Synthesis of multi-walled carbon nan...

Ngày tải lên: 21/06/2014, 05:20

... network. Conclusions The effect of surface modifications of multi-walled CNTs on the electrical response of CNT/PVDF nano- composites has been investigated. The main effect of oxidation is a reduction of the composite ... effect of fibre concentration on the alpha to beta-phase transformation, degree of crystallinity and electrical properties of vapour grown carbon nanofib...

Ngày tải lên: 21/06/2014, 04:20

... amount of synthesis r outes and variations were developed. Most of these were based on the use of catalyst particles, including the che- mical vapour deposition (CVD) route. CVD synthesis of CNT ... Catalyzing Growth of Single-Walled Carbon Nanotubes on Substrates. Nano Lett 2006, 6:2987. 17. Lu C, Liu J: Controlling the Diameter of Carbon Nanotubes in Chemical Vapor Depos...

Ngày tải lên: 21/06/2014, 04:20

... cubic phase of NaYF 4 (JCPDS card, No. 77-2042). From the line broadening of the diffraction peaks, the crystallite size of the sample was determined to be approximately 18 nm using the Debye-Sche ... an important prerequisite for the applications of UCNPs is the availability of small and monodisperse nanoparticles [1]. Recently, the synthesis of various inorganic nanoparticles...

Ngày tải lên: 20/06/2014, 22:20

... polymeric membranes are still restricted by the trade-off trend between gas permeability and selectivity which was suggested by Robson [8]. Additional limita- tion of the polymeric membrane is that ... the fabrication of defect-free molecu- lar sieve membranes remains a challenge. In recent dec- ades, there has been significant interest in the development of synthesis methods of...

Ngày tải lên: 20/06/2014, 23:20

... c- tion of femtosecond laser pulse repetition rate. Fig ure 6 shows XRD pattern of NdFeB magnetic nanofibers gener- ated by femtosecond laser at 26 MHz and a power of 15 W. The average nanofibers ... rate of the femto- second laser results in generating smaller size magnetic nanofibers. The magnetic strength of the generated nanofibers can be controlled by changing the repet iti...

Ngày tải lên: 21/06/2014, 03:20

... formation of nanometer scale crystallites of HfO 2 .The second method involved a two-step heating process by which macroscopic, freestanding nanosheets of HfO 2 were formed as a byproduct during the synthesis ... have been reports of interesting p roperties of HfO 2 when synthesized in the form of nanocrystals or nanorods [3-5]. Inducing dimen- sional constraints by reducing...

Ngày tải lên: 21/06/2014, 04:20

... Controlled synthesis of millimeter-long silicon nanowires with uniform electronic properties. Nano Lett 2008, 8:3004. 2. Plante MC, LaPierre RR: Growth mechanisms of GaAs nanowires by gas source ... Grandidier B, Stiévenard D, Coffinier Y, Boukherroub R, Larde R, Cadel E, Pareige P: Growth of Si nanowires on micropillars for the study of their dopant distribution by atom probe t...

Ngày tải lên: 21/06/2014, 05:20

... the diameter of the gold droplets are determined by the Au evaporation rate and the temperature of the samples via the Ostwald ripening process [6]. In the next step, the growth of the NWs was ... evaporation rate of elemental Si and Ge was measured from the thickness of the two-dimensional film grown on the substrate during the NW growth. The morphology of the NWs was investiga...

Ngày tải lên: 21/06/2014, 07:20

... precipitation of the oxide. The rate of reaction was controlled by allowing one drop of ammonia per second to react with this solution until a pH of 10, to get a thick dark precipitate. Five grams of citric ... most recommended because of its higher magnetization values, lesser toxicity [19] and the ease of metabolism by the liver. In the present study, we report the synthe...

Ngày tải lên: 21/06/2014, 07:20