Nearly monodisperse cu2o and cuo nanospheres

Ngày tải lên: 21/06/2014, 08:20

... synthesize nearly monodispersed CoFe2O4 nanoparticles and systematically investigate the magnetic properties of the as-prepared nanomaterials At room temperature, these asprepared nanoparticles ... was transferred into a Teflon-lined stainless autoclave with a capacity of 150 ml In order to crystallize the particles, the reaction temperature of the autoclave was increas...

Ngày tải lên: 21/06/2014, 18:20

... condition of the microspheres shown in Fig 1c The surface of microspheres was made of a number of small subunits, each of which is like a tetrahedron crystal in shape and uniform in size and packed ... formation of homogeneous and tight Fe3O4 In contrast, pH values in NaOH system changed all through and decreased with the nucleation time of forming Fe3O4, and fu...

Ngày tải lên: 20/03/2014, 13:08

... ZnO nanospheres taken at (a) low and (b) high magnification (c) and (d) Magnified SEM images of an open hollow and porous ZnO nanosphere SEM images of the Y-doped nanospheres taken at (e) low and ... of the ZnO nanospheres prepared under different concentrations of monoethanolamine (MEA): (a) and (b) mL, (c) and (d) mL, (e) and (f) 15 mL, (g) and (h) 30 mL, (i) and...

Ngày tải lên: 06/05/2014, 13:23

... Synthesis and characterization of CuO nanowires by a simple wet chemical method Anita Sagadevan Ethiraj1 and Dae Joon Kang*1 BK21 Physics Research Division, Department of Energy Science, ... djkang@skku.edu Abstract We report a successful synthesis of copper oxide nanowires with an average diameter of 90 nm and lengths of several micrometers by using...

Ngày tải lên: 20/06/2014, 21:20

... Enhancements of thermal conductivities with Cu, CuO, and carbon nanotube nanofluids and application of MWNT /water nanofluid on a water chiller system Nanoscale Research Letters 2011 6:297 Submit your manuscript ... factors on thermal conductivity and stability of CNT /water nanofluids, including nanoparticle size and concentration, surfact...

Ngày tải lên: 21/06/2014, 04:20

... fraction at 25°C The thermal conductivity of the base fluid (H2O) was measured, and it had an average value of 0.580 W·m -1 ·K -1 It can be seen that the thermal conductivity ratio increases as ... al.’s data, Das et al.’s data, and Liu et al.’s data [30-32], suggesting the potential application as heat transfer fluids 12 13 14 Conclusion A wet chemical method to synthes...

Ngày tải lên: 21/06/2014, 05:20

... exist CuO nanowires on the outside surface of microcontainers in our case However, we not observe any CuO nanowires on the outer surface of microcontainers We believe that the growth of CuO nanowires ... compact The CuO film can only expand along normal direction of the surface Due to space limit, CuO film on the inner surface of microcontainer will...

Ngày tải lên: 21/06/2014, 06:20

... Synthesis and characterization of CuO nanowires by a simple wet chemical method Anita Sagadevan Ethiraj1 and Dae Joon Kang*1 BK21 Physics Research Division, Department of Energy Science, ... djkang@skku.edu Abstract We report a successful synthesis of copper oxide nanowires with an average diameter of 90 nm and lengths of several micrometers by using...

Ngày tải lên: 21/06/2014, 17:20

... Fabrication, characterization, and kinetic study of vertical single-crystalline CuO nanowires on Si substrates Shao-Liang Cheng*1 and Ming-Feng Chen1 Department of Chemical and Materials ... report here on the first study of the growth kinetics of high-yield, vertical CuO nanowires on silicon substrates produced by the process of thermal oxidati...

Ngày tải lên: 21/06/2014, 17:20

... both the nanoparticle growth and the soon coming OR and OA processes can be suppressed, and the surfaces of NPs will be rapidly deactivated by acetone through a process of 123 1132 Nanoscale Res ... mixing and reaction area from the inlets of and to Y mixers connected with channels shrinking from in order to realize a rapid mixing with low pressure loss The nucleation and grow...

Ngày tải lên: 21/06/2014, 20:20

... Bovine, and Lysozyme Experimental Sodium tungstate, sodium borohydride, hydrochloric acid (37%), and ethanol were purchased from Sinopharm Chemical Reagent Co., Ltd (Shanghai, China) and used ... temperature was 100 °C and that the NaBH4 powders must be added step-by-step because the reaction at 100 °C takes place vigorously Coomassie Brilliant Blue and the proteins adsorption exp...

Ngày tải lên: 22/06/2014, 00:20

... spectra of titania nanostructures S1, S2, and S3 The onset of absorption for the three samples is 382, 405, and 415 nm for S1, S2, and S3, respectively To determine the nature of the band gap, ... NaCl (5.0 M), and NH4Cl (5.0 M) were employed for the synthesis A typical microwave oven (Whirlpool, 1200W) operating at a frequency of 2,450 MHz was used for the synthe...

Ngày tải lên: 22/06/2014, 01:20

... coefficients of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB, and (b) and (c) nanospheres synthesized using 1:5 ratio of Ag2C2O4 and PVP and 1:2 ratio of Ag2C2O4 and CTAB, respectively, ... crystallite sizes of (a) Ag nanorods synthesized using 1:5 ratio of Ag2C2O4 and CTAB and (b) and (c) nanospheres synthesized using 1:2 ratio of Ag2...

Ngày tải lên: 22/06/2014, 01:20

... function is K -quasi-nearly subharmonic if and only if it is K -quasi-nearly subharmonic n.s iii A Lebesgue measurable function is 1 -quasi-nearly subharmonic if and only if it is 1 -quasi-nearly subharmonic ... subharmonic n.s and if and only if it is nearly subharmonic in the sense defined above iv If u : D → −∞, ∞ is K1 -quasi-nearly subharmonic and v : D → −∞,...

Ngày tải lên: 22/06/2014, 02:20