Abstract
In the present work, MoS
2
and WS
2
catalysts were prepared by ultrasonic-assisted hydrothermal method to degrade the azo dye (reactive red 120). The prepared MoS
2
and WS
2
catalysts were confirmed by the different analytical techniques. The ultrasonic-assisted hydrothermal process enables the formation of highly crystalline MoS
2
and WS
2
nanoparticles. XPS result confirms the presence of divalent sulphide ions in both the samples and tetravalent tungsten and molybdenum. The formation of flower-like particles is confirmed by SEM and TEM. The photocatalytic activity of the MoS
2
and WS
2
towards reactive red 120 (RR120) was examined. Both the MoS
2
and WS
2
catalysts show 85% and 84% degradation ability against RR120. MoS
2
and WS
2
catalysts are highly stable and exhibit more than 77% and 75% after 4th cycle.