Greener exfoliation of MoS2 nanosheets using sodium alginate as biosurfactant and its photocatalytic performance against azo dyes

Sustainable Chemistry for the Environment Pub Date : 2025-02-11 DOI:10.1016/j.scenv.2025.100216

Mandeep Kaur , Vineet Kumar , Kulvinder Singh

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Abstract

Herein, we explored sodium alginate assisted MoS₂ nanosheets synthesized using dual radiation exposure i.e., ultrasonic and microwave radiation and its photocatalytic activity was assessed against methylene blue, commercial blue, and textile industrial water. Photocatalyst was characterized by various characterization techniques that showed the fabricated nanosheets were highly crystalline with hydroxyl and C-O functional group on surface. The fabricated nanosheets degraded 98.81 ± 4.12 % of MB in 4 h, 94.79 ± 0.77 % CB in 30 min, and 94.09 ± 0.50 % of textile sample in 60 min, respectively. Along with, the potent anti-oxidative activity by scavenging 88.46 ± 3.4 % of free radicals generated from the DPPH. In addition, significant antibacterial activity against E. coli and S. aureus, indicating its potential as an effective antibacterial agent. The findings of this study will aid in the creation of a wider range of two-dimensional nanocomposites that can be utilized as materials for water remediation.

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