Báo cáo hóa học: " Synthesis of silicalite-poly(furfuryl alcohol) composite membranes for oxygen enrichment from air" docx

... 6:637 http://www.nanoscalereslett.com/content/6/1/637 Page 5 of 9 NANO EXPRESS Open Access Synthesis of silicalite-poly(furfuryl alcohol) composite membranes for oxygen enrichment from air Li He 1 , Dan Li 1 , Kun Wang 1 , ... al.: Synthesis of silicalite-poly(furfuryl alcohol) composite membranes for oxygen enrichment from air. Nanoscale Research Let...

Ngày tải lên: 20/06/2014, 23:20

... temperature of the sample to form magnetic nanofibers. The total magnetization of a nanofiber is given b y the vectorial sum of all single magnetic moments of the atoms [24]. As for the atomic ... rapid onset of self-assembly of the nanoparticle chains (or nanofibers). The laser pulse repetition rate plays a critical role in the formation of nanofibrous like structure. Figure...

Ngày tải lên: 21/06/2014, 03:20

... closely with the calcu- lated pattern for 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 ... utilized for preparation of the UCNPs on a large scale. Introduction The synthesis and spectroscopy of NaYF 4 :Yb 3+ ,Er 3+ upconversion nanoparticles (UCNPs) have attracted a...

Ngày tải lên: 20/06/2014, 22:20

... creation of two-dimensional freestanding nanostructures is of spe- cial interest. Most device applications entail the use of materials in the form of thin films. Determining the intrinsic properties of ... microscope. It was found that the presence of Mn enhanced the formation of HfO 2 by exposure to ambient conditions and was necessary for the formation of the large scale n...

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 ... early formation of amorphous nano- humps apparently serve as seed sites for the self-assem- bly of CNT. Growth Mechanisms Whilst significant strides have been ma de in under- sta...

Ngày tải lên: 21/06/2014, 04:20

... the first types of NWs are rarely higher than the overgrown Ge layer, while for the second type of NWs, the part of the NWs that surpasses the overgrown Ge layer can reach a length of 2 μmwhenthe growth ... [11,12]. Adsorption of gold on Si (112) planes is also known to causes the faceting of these planes [13]. Similarly, Au diffusion from the seed particle is at the origin o...

Ngày tải lên: 21/06/2014, 05:20

... characteristic peaks of Si 2s and Si 2p, respectively, from the POSS cage. The N (1s) high-resolution peak for the MWNT-POSS nanohybrid (Figure 5B) suggests the presence of only one oxidation state of the ... a new strategy for the synthesis of CNT-based nanohybrids. Abbreviations CNT: carbon nanotube; DMF: dimethylformamide; EDX: energy dispersive X-ray spectrum; FT-IR: Fouri...

Ngày tải lên: 21/06/2014, 05:20

... the temperature of the samples via the Ostwald ripening process [6]. In the next step, the growth of the NWs was achieved from the sublimation of Si or Ge at a deposition pressure of 10 -9 mbar. ... sur- face was heated either at 550°C for the growth of Si NWs or at 350°C to obtain Ge NWs. The evaporation rate of elemental Si and Ge was measured from the thickness of the t...

Ngày tải lên: 21/06/2014, 07:20

... a 1-cm cuvette at the photon energy of diode laser (670 nm). The simulation of the power loss spectrum of the sample was performed for applied field strength of 500Oe in the range 100–900 kHz. Results ... introduced for hyper- thermia application. So, the power loss and hence the heat generated becomes a function of domain magnetization, anisotropy and volume of the particle f...

Ngày tải lên: 21/06/2014, 07:20

... Foundation of China (No.50671099, 50172048, 10374090 and 10274085), the Ministry of Science and Technology of China (No.2005CB623603), and the Hundred Talent Program of Chinese Academy of Sciences. Open ... electricity current: 6 mA for 10 s), and then annealed at 1,000° C for 30 min under the high- purity Ar gas surrounding. After annealing, Au parti- cles formed from the con...

Ngày tải lên: 21/06/2014, 17:20