is the plot of rate of decomposition of SW using GSC
under UV and visible light irradiation Vs irradiation time. On
addition of GSC the rate constant calculated from the linear plot for
SW increased from 0.0006/min to 0.0016/min under UV irradiation
and form 0.0006/min to 0.0023/min for visible light irradiation. The
intensity of the absorption peak at 271 nm in SW also decreased
gradually with the increase in time.