The concentrations of MB in remaining solutions were determined by an UV–Vis spectrophotometer (PerkinElmer model lambda 25) at wavelength (lmax) of 664 nm, using a calibration curve. All experiments were performed in triplicate.
The concentrations of MB in remaining solutions were determined by an UV–Vis spectrophotometer (PerkinElmer modellambda 25) at wavelength (lmax) of 664 nm, using a calibration curve. All experiments were performed in triplicate.