Báo cáo hóa học: "Preparation of Aligned Ultra-long and Diameter-controlled Silicon Oxide Nanotubes by Plasma Enhanced Chemical Vapor Deposition Using Electrospun PVP Nanofiber Template" potx

... 283 123 NANO EXPRESS Preparation of Aligned Ultra-long and Diameter-controlled Silicon Oxide Nanotubes by Plasma Enhanced Chemical Vapor Deposition Using Electrospun PVP Nanofiber Template Ming Zhou • Jinyuan ... preparation of aligned ultra-long and the synthesis of diameter-controlled SiOx nanotubes array by plasma- enhanced chemical...

Ngày tải lên: 22/06/2014, 00:20

... rate of 50 mV s -1 . Results and discussion Characterization of Pt Ag alloy nanoisland/graphene hybrid composites Figure 1 shows the SEM images of graphenes, EDX spectra of graphene oxide (GO), and ... the course of graphene preparation, PVP was used and remarkably increased the stability of graphene sheets because of strong hydrophobic interactions between gra- phene...

Ngày tải lên: 20/06/2014, 22:20

... EXPRESS Open Access Preparation of monolayers of [Mn III 6 Cr III ] 3+ single- molecule magnets on HOPG, mica and silicon surfaces and characterization by means of non- contact AFM Aaron Gryzia 1 , ... as: Gryzia et al.: Preparation of monolayers of [Mn III 6 Cr III ] 3+ single-molecule magnets on HOPG, mica and silicon surfaces and characterization by means of non...

Ngày tải lên: 21/06/2014, 01:20

... supported by the National Natural Science Foundation of China (Grant No. 20903034, 10874040) and the Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of ... content of anatase decreased and the content of rutile increased in the range of 1–5 M HCl solutions. A maximum of content of rutile can be obtained in the 5 M HCl sol...

Ngày tải lên: 21/06/2014, 08:20

... Abstract Efficiency of dye-sensitized solar cells [DSSCs] was enhanced by combining the use of TiO 2 nanotubes [TNTs] and nanoparticles. TNTs were fabricated by a sol-gel method, and TiO 2 powders ... of dye adsorption on TiO 2 in the form of nanorods and nanotubes is expected because of the high surface area of these nanostructures. It is expected that the...

Ngày tải lên: 21/06/2014, 17:20

... pre- vented not by the repulsive force of nanoparticle charges but by the steric hinderance of dispersing agent of PVP. PVP concentrations less than two times concentrations of the sum of Fe and Pt complex ... prepared by photochemical or other synthetic methods [25–27]. Synthesis of nonspherical particles (nano- rods or nano-wires) of WO 3 by laser pyrolysis and...

Ngày tải lên: 22/06/2014, 00:20

... in the presence of polymer PEG 4000 by thermal decomposition of iron acetylacetonate. The morphology of product can be tuned by the amount of PEG 4000. When the concentration of PEG 4000 is decreased, ... the absence of an external magnetic field. The bulk phase Mo ¨ ssbauer spectrum of Fe 3 O 4 is composed of two sets of magnetic sextets at room temperature [26]. The spe...

Ngày tải lên: 22/06/2014, 00:20

... peak of ZnO, originating from stretching mode of the Zn–O bond [14]. The remaining peaks in pectin– ZnO composite are induced by pectin, which is confirmed by comparing of the IR spectrum of the ... that of the pectin [15]. The peak at 1030 cm -1 is assigned to C=O or C=C double bond of pectin. The absorption peaks at 1388 and 1633 cm -1 are related to stretching bands of C...

Ngày tải lên: 22/06/2014, 01:20

... CD27, and CCR7 (at week 2 with gradual disappearance by week Figure 8 Evaluation of the interrelationship between the type and timing of the second stimulus and expansion of restimulated CD4 (A and ... ameliorated by reducing the concentration of anti-CD3 on the bead surface or by the presence of irradiated autologous MNCs at the time of restimulation. Figure 7 Compa...

Ngày tải lên: 18/06/2014, 16:20

... and indirect costs of care also play a major role in influencing the social, psychological and physical wellbeing of the caregiver and of his/her family. Caring is held to be very demanding and ... psycholog- ical condition, and, therefore, anxiety and depression of the caregiver, are closely related to the values of the MMSE, ADL, IADL and to the several phases of th...

Ngày tải lên: 18/06/2014, 19:20