Catalyst

0.02 g

Carboxylic acids

Conc. of acids

in 10−3 M

103 k

in

sec−1

COD Values in mg/L

Photodegradation

Efficiency %

Before

degradation

After

degradation

Al2S3/MoS2 nanocomposite

Cl3CCOOH

0.5

2.594

512

16

96.87

1.0

2.283

992

24

96.58

2.0

0.379

1216

48

96.05

3.0

0.138

1296

64

95.06

ClCH2COOH

0.5

2.210

416

32

96.15

1.0

1.443

704

16

97.72

2.0

0.318

816

48

96.07

3.0

0.122

992

64

95.16

CH3COOH

0.5

1.243

352

16

90.90

1.0

0.629

544

16

97.05

2.0

0.161

592

32

91.89

3.0

0.088

672

48

95.23