4
Methyl
Orange
Sodium;4-[[4-(dimethylamino)phenyl]diazenyl]
benzenesulfonate
C
14 H
14 N
3 NaO
3 S
327.3 g/
mol
5
Methyl red
2-[[4-(dimethylamino)phenyl]
diazenyl]benzoic acid
C
15 H
15 N
3 O
2
269.3 g/
mol
6
Bismarck
brown Y
4-[[3-[(2,4-diaminophenyl)
diazenyl]phenyl]diazenyl]benzene-1,3-diamine;
dihydrochloride
C
18 H
20 Cl
2 N
8
419.3 g/
mol
7
Orange G
phenyldiazenylnaphthalene-1,3disulfonate
C
16 H
10 N
2 Na
2 O
7 S
2
452.4 g/
mol
(continued)
4 Photocatalytic Degradation of Azo Dyes in Water
123