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With sodium acetate In methanol Pt complex was added with stirring to soln. of CH3COONa in methanol under CO; after 24 h soln. of methylene blue in methanol was added; mixt. was stirred for 1 h; filtered; washed (methanol); dried (vac.); elem. anal.;
Multi-step reaction with 2 steps
1.1: triethylamine; hydrazine hydrate / acetonitrile / 2 h / 15 - 70 °C / Industry scale
1.2: 2 h / 90 - 100 °C / Industry scale
2.1: toluene / 0.5 h / Reflux
2.2: 3 h / 85 °C
With 0.4percent Pt/Ti-Na-mordenit; In water; at 25.0℃; for 1.0h;pH Ca. 7;UV-irradiation;Catalytic behavior; Kinetics;
The application of synthesized nanocomposite for the photodegradation of pureDB53 dye was investigated under visible light. The experiments were carried outusing a horizontal cylinder annular batch reactor. The photocatalyst was irradiatedwith a blue fluorescent lamp (150 W) doubly covered with a UV cut filter. Theintensity data of UV light is confirmed to be under the detection limit (0.1 mW/cm2) of a UV radiometer. In a typical experiment, weight of catalyst were suspendedinto a 300-ml, 100 mg/L pure DB53 dye solution (pH 7). The reaction was carriedout isothermally at 25 C and samples of the reaction mixture were taken at differentintervals for a total reaction time of 1 h.The concentration of the unreacted DB53 dye was analyzed with UV JASCO (V570). The removal % of DB53 dye was measured by applying the following equation.% Removal efficiency ¼ dhCo CTh=Co 100 dh1Thwhere Co is the initial concentration of DB53 in solution, C is the remaining concentrationin solution after reactionBefore all photocatalytic runs, a fresh solution (300 ml) of DB53 were adjustedto required pH, and the catalyst was suspended. Suspensions were kept in dark andmagnetically stirred at 25 C for 60 min. The results indicate that adsorption efficiencywas about 18-20%.
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