The usage of visible light active semiconductor photocatalysts for the deterioration of persistent organic pollutants is a hopeful practice, which has captivated substantial consideration. In this work, perylene nanoparticles incorporated MoS2 nano photocatalysts (PeNPs-MoS2) were synthesized and utilized for the degradation of methylene blue (MB), rhodamine B (RhB) and crystal violet (CV) dyes under sunlight. Perylene nanoparticles were prepared by means of chemical reduction method involving perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) as the precursor and sodium borohydride (NaBH4) as the reducing agent. An upsurge in the photocatalytic degradation of dyes (MB, RhB and CV) in aqueous solution under solar irradiation was detected for PeNPs-MoS2 when compared with that of pure MoS2. The improved separation between photo induced charge carriers was evidenced from the photoluminescence studies for PeNPs-MoS2 photocatalysts. Radical trapping experiments identified superoxide radical (•O2−) as the most dominant active species involved in the photodegradation process. This work validates that perylene nanoparticles sensitized nano MoS2 could be a promising candidate for the degradation of organic dye pollutants.

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