Details

Autor(en) / Beteiligte

• Rajan, Mekha Susan
• John, Anju
• Thomas, Jesty

Titel

Perylene nanoparticle-sensitized MoS 2 : an efficient solar photocatalyst for the degradation of pollutants

Ist Teil von

• New journal of chemistry, 2023-01, Vol.47 (3), p.1349-1359

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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 nanoparticle-incorporated MoS 2 nano photocatalysts (PeNPs-MoS 2 ) 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 using a chemical reduction method involving perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) as the precursor and sodium borohydride (NaBH 4 ) 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-MoS 2 , when compared with that of pure MoS 2 . The improved separation between photo-induced charge carriers was evident from the photoluminescence studies for PeNPs-MoS 2 photocatalysts. Radical trapping experiments identified superoxide radical (˙O 2 − ) as the most dominant active species involved in the photodegradation process. This work validates that perylene nanoparticles sensitized nano MoS 2 could be a promising candidate for the degradation of organic dye pollutants.