Báo cáo vật lý: "Protective Agent-Free Synthesis of Colloidal Cobalt Nanoparticles" potx

... Protective Agent-Free Synthesis 4 3. RESULTS AND DISCUSSION 3.1 Formation and Characterization of Colloidal Co Nanoparticles Colloidal Co nanoparticles were prepared by the reduction of Co ... & Jeyadevan, B. (2007). Designed synthesis of cobalt and its alloys by polyol process. J. Solid State Chem., 180, 3008–3018. Protective Agent-Free Synthesis...

Ngày tải lên: 07/08/2014, 14:20

... absence of the particle. Then, the number, N (ones), of particles within each square of different sizes, l, are counted. The fractal dimension, D is obtained from the slope of the plot of log 10 ... This technique involves drawing a square in the center of fractal followed by a series of nested squares of increasing sizes, l (length of the box). Next, the micrograph is...

Ngày tải lên: 07/08/2014, 14:20

... Experimental Data of Viscosity and Temperature to Investigate the Reliability of E a in Indicating the Stability of Viscosity – Temperature Relation The reliability of the E a in indicating ... Journal of Physical Science, Vol. 21(1), 29–39, 2010 29 The Hidden Property of Arrhenius-type Relationship: Viscosity as a Function of Temperature Sunny Goh Eng Giap Dep...

Ngày tải lên: 07/08/2014, 14:20

... treatment of the data. The structure of BP algorithm comprised of three layers, input, output and hidden layer. Figure 1 shows the architecture of the ANN. The input layer consists of seven ... with reproducibility characters of the method yield relative standard deviation (RSD) of 0.44% and 0.94% for Pb(II) and Cd(II), respectively. The limit of detection of the method...

Ngày tải lên: 07/08/2014, 14:20

... ml of chloride solution of concentration range between 1.0 x 10 –6 M – 2.0 M at pH 6.5 ± 1.0 and 25.0 ± The Potentiometric Analysis of Chloride Ion 44 1. INTRODUCTION The importance of ... in the production of industrial chemicals, they are also useful in the production of fertilizers. The source of environmental chlorides includes leaching from several types of roc...

Ngày tải lên: 07/08/2014, 14:20

... CONCLUSION The first step of synthesis is the decomposition of the input semantic repre- sentation into the set of semantic compo- nents. The possibilities of lexicalization of components are determined ... framework of the question- answering system. Right from the start of synthesis the process of decomposition of the input se- mantics takes place in order to c...

Ngày tải lên: 18/03/2014, 02:20

... The soft X-ray source consisted of aluminum with Figure 8 TEM images of AuNPs synthesized by CO reduction of HAuCl 4 . A, B, C, and D are TEM images of AuNPs synthesiz ed without the addition of ... pressure of 1 atm. The pH of the solution varies as a function of HAuCl 4 concentration. Nernst equation describes potential of electrochemical cell as a function of concentrat...

Ngày tải lên: 21/06/2014, 03:20

... room temperature synthesis of Pd nanoparticles by UV irradiation of the mixture of PdCl 2 and K 2 C 2 O 4 solutions. Experimental In a typical synthesis, a mixture of 20 mL of 5 mM PdCl 2 (Sigma-Aldrich, ... the texture coefficient of the facet {hkl}, I (hkl) is the intensity of the (hkl) reflection of the sample under analysis, I o(hkl) is the intensity of the (hkl) reflect...

Ngày tải lên: 22/06/2014, 01:20

... with increasing amounts of HCl or the presence of large amounts of C1 – ions. Therefore, for the partial dehydration of PEO units, the volume of the hydrophilic part of the micelle decreases. ... formation and the synthesis conditions. The images of SBA-15 samples synthesised at a TEOS/TCP ratio of 3.15 showed more cavities compared to those synthesised with a TEOS/TCP r...

Ngày tải lên: 07/08/2014, 14:20

... Figure 9 shows the plots of real part of complex permittivity of BiTaO 4 ceramics as a function of sintering temperature. The ε r increases appreciably with the increase of temperature. The temperature ... permittivity of about 47–48. 14 The corresponding R b of ~2.28 x 10 6 to ~1 x 10 4 ohm cm over the temperature range of 550 o C to 850 o C are obtained from the in...

Ngày tải lên: 07/08/2014, 14:20