The compound’s empirical formula was determined to be FeK3(C2O4)3•3H2O. With the molecular formula and the balanced equation for the synthesis of potassium trioxalatoferrate (III) trihydrate, stoichiometry revealed potassium oxalate monohydrate was the limiting reactant. The theoretical yield of 6 grams of potassium oxalate monohydrate was
Commercial TiO2 P25 was obtained from Evonik. Ultrapure water (18MΩ.cm-1) was used throughout the whole experiments. 2.2. Synthesis of photocatalysts The TiO2 nanoparticles were prepared by the sol-gel method described below: 3.9 ml of TiCl4 was slowly added into 10 milliliter of absolute ethanol in reaction vesel, this reaction performed under fume hood at 0°C with vigorous stirring due to exothermic reaction,the high volatilityof TiCl4and also therelease of hydrogen chloride. Then, water was added dropwise during the mixing process.
Spectrophotometric techniques UV spectrophotometric estimation of DOX is possible due to the presence of polyhydroxyanthraquinone chromophoric group on the 7,8,9,10-tetrahydronaphthacene skeleton. The drug when dissolved in ethanol (95%) shows characteristic peaks at 234 nm, 252 nm, 288 nm, 475 nm and at 530 nm (I.P 2014). Cia and coworkers reported the estimation of entrapment efficiency and drug loading capacity of polybutylcyanoacrylate magnetic loaded DOX nanoparticles (Cai et al., 2009). 2.10.2. Chromatographic
Using a blank cuvette place the commercial liquid and calculate the concentration and absorbency and which dyes would be in this liquid. Results: Maximum wavelength of Red Dye #3 Solution Absorbance Wavelength Max Concentration Solution 1 0.489 A.U. 526 nm 9.1 x 10-6 mol/L Solution 2 0.188 A.U. 525 nm 1.8 x 10-6 mol/L Solution 3 0.705 A.U. 525 nm 1.5 x 10-5mol/L Solution 4 0.682 A.U.
3. Result and discussion 3.1 Effect of Oxygen plasma-hydrophilicity Analysis The hydrophilic nature of the Oxygen plasma treated cotton fabrics was investigated by measurements of contact angle and optical microscope image. Fig. 2(a) shows the variation of the contact angle for the untreated and Oxygen plasma treated cotton fabric at different treatment times. The contact angle of untreated fabric found 1490 (fig.2 (b)) it is noted that the hydrophobic nature due to lack of polar groups on the substrate.
from the two opposite electrodes demands in the regeneration of dyes by catalyzing the I−reforming from the I3− species in the redox couple. The Pt., roughness, Mother Nature of the outside (reveal) fact etc. play an important role in finding the overall output of a DSC device. Having Pt. being a high cost novel metal, prominent efforts have been done to form low cast substitute.
Forced exit of byproducts by diffusion Source gas depletion occurs along the length of the susceptor. As reacting gases are consumed, their concentration becomes low with distance. The wafer susceptor is tilted as shown in figure 3. This decreases the cross sectional area of the chamber causing gas velocity to increase. Figure 3: wafer susceptor is tilted to increase the speed of the
In some cases Oxygen is also introduced as a reactant carrier to control the characteristics of the film. B. Vapour phase reaction Constituent species in the gaseous phase react in the presence of inert, oxidizing or even some reducing atmosphere to form the desired product. Thus SiO2 films can be produced by the reaction of SiCl4 vapour with carbon dioxide in the pressure of hydrogen gas and this is known as Philips process. The reaction goes in the following way SiCl4 + CO2 + H2 SiO2 + CCl4 + H2 --------------- (3.9) SnO2 films often used as metal oxide resistors can be prepared from SnCl4 vapours in presence of water and HCl vapours at a temperature about 500˚C and the reaction can be represented by the equation SnCl4 + 2H2O + HCl SnO2 + 4HCl + HCl ---------------
Mechanochemically assisted SSM reaction at room temperature method was employed for the synthesis of phosphors have been illustrated in detail and also the devices used for the characterization of the phosphor materials have been discussed. These devices are such as luminescence spectroscopy, XRD studies, energy dispersive X-ray analysis, Infrared (IR) spectroscopy, scanning electron microscopy and Raman spectroscopy. 4. Synthesis and photoluminescence properties of CaMoO4: x Eu3+ phosphors CaMoO4: x Eu3+ nano phosphors have been successfully prepared by mechanochemically assisted SSM reaction route at room temperature. The characteristics of the europium doped red phosphor materials were analyzed in detail using XRD, Fourier Transform infrared spectroscopy, scanning electron microscope and photoluminescence(PL) and diffuse reflectance spectroscopy in
These variations showed that the MWCNTs-β-CD-OPDPA/GCE not only combines high conductivity and electrocatalytic effect of MWNTs and also PDPA with the ability of β-CD to form inclusion complexes with ceftazidime but also the ability of the oxidized polymer for increasing of current. These facts and also diminished background current or oxidized polymer cause to the best analytical features and the low detection limit for this