International Journal of Photochemistry

Research Article

Silver(I) Catalyzed Photochemical Oxidation of Methylene Blue and Safranine-O by Peroxydisulphate: A Green Chemical Approach

Table 3

Effect of peroxydisulphate concentration.
Methylene blueSafranine-O
/M/sec−1 [/M/sec−1
0.40.232.01.98
0.80.502.42.18
1.21.122.82.30
1.61.683.22.59
2.02.113.63.07
For methylene blue, pH = 5.0; [Methylene Blue] =  mol dm−3; [AgNO3] =  mol dm−3; light intensity = 60.0 mW cm−2. For safranine-O, pH = 4.5; [Safranine-O] =  mol dm−3; [AgNO3] =  mol dm−3; light intensity = 60.0 mW cm−2.