Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Polish Journal of Chemistry

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Photocatalytic Degradation of Crystal Violet by Use of Copper Oxide as Semiconductor

Shah A., Mittal N., Bhati I., Sharma V. K., Punjabi P. B.

Polish Journal of Chemistry

2009

Vol. 83, nr 11

2001-2007

The photocatalytic degradation of crystal violet on copper oxidesemi conductor suspended in aqueous solution has been carried out. The progress of reaction has been studied spectrophotometrically by observing absorbance of reaction mixture at different time intervals. The effects of various parameters such as concentration of crystal violet, pH of reaction mixture amount of semiconductor and intensity of light on the rate of reaction have also been observed. The photocatalytic degradation of crystal violet follows pseudo first order kinetics and the rate constant has been determined. Atentative mecha nism for the reaction has also been proposed.

Sonochemical Degradation of Some Triphenyl Methane Dyes

Panwar C., Kumar A., Paliwal M., Punjabi P. B., Ameta S. C.

Polish Journal of Chemistry

2007

Vol. 81, nr 10

1777-1784

Sonochemical degradation of brilliant green and malachite green has been carried out by ultrasound (4 MHz) in an ultrasonic interferometer. The sonochemical degradation of dyes was observed by spectrophotometric method. The effect of various parameters like pH, concentration of dyes, solvent composition, temperature, nature and concentration of surfactant on the reaction rate of the sonochemical degradation was also observed. The value of energy of activation was also computed for sonochemical degradation. A tentative mechanism has been proposed.