Fabrication of Mos2-Chitosan Nanocomposites for Environmental Remediation Applications

Abstract

Accelerated industrial growth results in environmental contamination, particularly in aquatic ecosystems. Photocatalytic degradation is an efficient and environmentally sustainable method for addressing industrial pollution, as it may completely decompose various water pollutants into non-toxic forms. Chitosan (CS) and molybdenum disulfide (MoS₂) facilitate effective dye degradation; nevertheless, MoS₂ possesses certain drawbacks. This study therefore synthesised a MoS2 hybrid nanocomposite based on chitosan (CS) to address these issues by improving the degradation of dye molecules, particularly Methylene Blue (MB), under sun light. The synthesized MoS₂@CS hybrid nanocomposite was comprehensively analyzed utilizing many analytical techniques, including XRD, SEM, UV-Visible, and PL spectroscopy. Various affecting parameters, including irradiation duration, initial dye concentration initial pH and dosage, were improved using batch mode. The heterogeneous MoS₂@CS water hybrid nanocomposite might promote the photodegradation of MB. The attenuated band gap of MoS₂@CS renders it effective for the degradation of MB, achieving a maximum degradation capability of 95% after 90 mins at pH 8 with a minimal dosage of 50 mg. A potential degradation procedure for MB dye molecules in an aqueous environment was proposed. This study presents an innovative photocatalyst for the water purification and decontaminate of dye molecules and other water pollutants in contaminated wastewater.