Abstract

Nurdiani¹ and Foliatini²

DOI : http://dx.doi.org/10.13005/ojc/350507

Au nanoparticles were successfully synthesized using diabetic sugar as reducing agent, with and without the aid of microwave heating. The hydrolysis of diabetic sugar was carried out using HCl, prior to the synthesis. By adjusting pH of the mixture to basic condition, the formation of the nanoparticles effectively occurred resulting purple colloidal solution. The solution was centrifuged or left overnight to yield precipitate of Au nanoparticles. The as-formed Au nanoparticles were characterized by UV-Vis spectrophotometry, Fourier-Transform infrared spectrophotometry and scanning electron microscopy. The result showed that the Au nanoparticles played a significant role as catalyst for oxidation of methylene blue by H2O2. The kinetics of the oxidation process followed pseudo first order reaction rate with the rate constant depending on the AuNP characteristic and experimental condition.

Au Nanoparticles; Catalyst; Diabetic Sugar; Green Chemistry; Methylene Blue;Synthesis

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