Báo cáo hóa học: " Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction" pot

... the synthesis of monodisperse CdS NCs in the size range of 3.0–5.4 nm, and the NCs produced photoluminescent emissions in the range of 391–463 nm. Keywords Microreaction Á Quantum dots Á CdS Á Nanocrystals Introduction The ... the synthesis of monodisperse CdS NCs [27], but its low throughput limits its use to commercial-scale synthesis. In this study, a capillary mi...

Ngày tải lên: 22/06/2014, 00:20

... (3.90). Preparation of CdS/ ZnS nanocrystals (1) Synthesis of 4 nm CdS nanocrystals One millimole of cadmium stearate, 2 mmol of stearic acid, 4 mmol of oleylamine and 13.4 g of oc- tadecene were ... the spectral region of 440–480 nm. Fig. 4 Bottom: Powder X-ray diffractogram of the CdS/ ZnS nanocrystals. Top: XRD patterns of the sample, of wurtzite CdS (JCPDS...

Ngày tải lên: 22/06/2014, 22:20

... Zhou H: Effect of particle dispersion on high rate performance of nano-sized Li 4 Ti 5 O 12 anode. Electrochimica Acta 2007, 52:6470. 2. Kavana L, Grätzel M: Facile synthesis of nanocrystalline ... typical FESEM and HRTEM images of the Li 4 Ti 5 O 12 powders prepared through the solid-state process. Small and uniformly sized Figure 4 Figure 2 1 Facile synthesis of nano...

Ngày tải lên: 20/06/2014, 23:20

... various phosphorus precursors 1 to 3. Figure 3. One -pot synthesis of core-shells and their optical properties. (a) One -pot synthesis of InP with P(SiMe 2 -tert-Bu) 3 followed by ZnS shell ... experiments with a synthesis of the InP NQDs using compounds 2 (Figure 3a) and 3. For a typical experiment, 0.04 mmol of In(OAc) 3 was added to a mixture of 0.12 mmol of MA a...

Ngày tải lên: 21/06/2014, 17:20

... on the surface of MnO 2 and also possible intercalation/deintercalation of H ? and alka- line metal cations in the bulk of MnO 2 [29]. Since the 3-D dandelion-like microspheres of the sample A ... smaller feature of the micro- spheres. The excellent cycling stability and good rate capability of the film composed of dandelion-like micro- spheres coupled with the simple and low cos...

Ngày tải lên: 21/06/2014, 20:20

... dominating peaks of B, C, and N with a low level of O, Cu, and Si. The existence of Cu peak should be caused by the copper TEM Fig. 1 a Low-magnification SEM image of the product, showing the large quantity of the ... of B 2 O 2 ,C 2 H 5 OH, N 2 , and H 2 (Fig. 5a). The involving species of B and C could lead to the further decrease of the melting temperature of stainless ste...

Ngày tải lên: 22/06/2014, 00:20

... contain Fig. 1 XRD of ZnO nanorods Fig. 2 XRD of precursor complex 32 Nanoscale Res Lett (2008) 3:31–35 123 NANO EXPRESS Facile Synthesis of ZnO Nanorods by Microwave Irradiation of Zinc–Hydrazine ... nanomaterial. Conclusions A facile route for the synthesis of ZnO nanorod by microwave irradiation method has been reported. The method offers a very simple and low cost route...

Ngày tải lên: 22/06/2014, 06:20

... percentage of grafting (PG, mass ratio of the grafted polymer to silica nanopar- ticles) of the PS-SNs was found to be 61% according to the TGA analysis (Fig. 1). The surface polystyrene shells of the ... proportion of the cross-linked polystyrene grafted silica nanoparticles (CP- SNs) was less than that of the polystyrene grafted silica nanoparticles (PS-SNs), the percentage of...

Ngày tải lên: 22/06/2014, 00:20

... linear data fitting of the stress–strain curve ranged from 47 to 89 GPa, with an average value of *56 GPa. Sample #3 was noticed to have a smallest value of diameter but a highest value of Young’s modulus, ... the effectiveness of them was found to be in the order of Ni [ (Au, Ag) [ (Pd, Pt). While a catalytic material was used in syntheses, it can be detected from the tips of mo...

Ngày tải lên: 22/06/2014, 00:20

... hexane. Synthesis of InP/ZnS For in situ fabrication of InP/ZnS core-shell NQDs, the temperature of the growth solution of InP was lowered after a 10-min growth to 200°C. Thirty milligrams of ZDC, ... various phosphorus precursors 1 to 3. Figure 3. One -pot synthesis of core-shells and their optical properties. (a) One -pot synthesis of InP with P(SiMe 2 -tert-Bu)...

Ngày tải lên: 20/06/2014, 20:20