FT-IR – (KBr, v/cm
À1 ): 3248, 1714, 1608, 1562, 1506, 1438, 1259, 1189, 1132,
993, 829, 746, 592, 505, 422.
12.6.2 Photodegradation of Methylene Blue and Congo Red
The synthesized polymer-supported ionic liquid iron porphyrin catalyst was used to
photodegrade the two azo dyes, methylene blue and congo red under the simulated
light and normal air at specific values of pH. The photodegradation results are shown
in Figs. 12.4 and 12.5. The process parameters used in photodegradation were
optimized to maximize the degradation. In the process of optimization,
photodegradation of dyes in visible light was investigated by changing one variable,
and remaining variables were kept constant. After getting one optimum parameter,
next parameter study was carried out keeping fixed other variables to find optimum
photodegradation. First, the photodegradation of methylene blue using this catalyst
with different quantities was optimized under simulated light at temperature of
25
C. The results are presented in Table 12.4 as serial numbers 1–5 and
Fig. 12.4, 1B.
Fig. 12.4 Methylene blue, MB dye (A) R-square value, (B) catalyst loading, (C) time variation of
10 mg catalyst and atmospheric air, and (D) time variation of atmospheric air. (Carried out at pH of
~5 in the presence of 5 W LED light)
402
D. S. Patle et al.
À1 ): 3248, 1714, 1608, 1562, 1506, 1438, 1259, 1189, 1132,
993, 829, 746, 592, 505, 422.
12.6.2 Photodegradation of Methylene Blue and Congo Red
The synthesized polymer-supported ionic liquid iron porphyrin catalyst was used to
photodegrade the two azo dyes, methylene blue and congo red under the simulated
light and normal air at specific values of pH. The photodegradation results are shown
in Figs. 12.4 and 12.5. The process parameters used in photodegradation were
optimized to maximize the degradation. In the process of optimization,
photodegradation of dyes in visible light was investigated by changing one variable,
and remaining variables were kept constant. After getting one optimum parameter,
next parameter study was carried out keeping fixed other variables to find optimum
photodegradation. First, the photodegradation of methylene blue using this catalyst
with different quantities was optimized under simulated light at temperature of
25
C. The results are presented in Table 12.4 as serial numbers 1–5 and
Fig. 12.4, 1B.
Fig. 12.4 Methylene blue, MB dye (A) R-square value, (B) catalyst loading, (C) time variation of
10 mg catalyst and atmospheric air, and (D) time variation of atmospheric air. (Carried out at pH of
~5 in the presence of 5 W LED light)
402
D. S. Patle et al.