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- Title
Valorization of sugarcane bagasse with in situ grown MoS<sub>2</sub> for continuous pollutant remediation and microbial decontamination.
- Authors
Ranjan, Rahul; Bhatt, Smruti B.; Rai, Rohit; Sharma, Sanju Kumari; Verma, Muskan; Dhar, Prodyut
- Abstract
In this study, sugarcane bagasse (SB) was strategically subjected to a delignification process followed by the in situ growth of multi-layered molybdenum disulfide (MoS2) nanosheets with hexagonal phase (2H-phase) crystal structure via hydrothermal treatment. The MoS2 nanosheets underwent self-assembly to form nanoflower-like structures in the aligned cellulose inter-channels of delignified sugarcane bagasse (DSB), the mechanism of which was understood through FTIR and XPS spectroscopic studies. DSB, due to its porous morphology and abundant hydroxyl groups, shows remediation capabilities of methylene blue (MB) dye through physio-sorption but shows a low adsorption capacity of 80.21 mg/g. To improve the removal capacity, DSB after in situ growth of MoS2 (DSB-MoS2) shows enhanced dye degradation to 114.3 mg/g (in the dark) which further improved to 158.74 mg/g during photodegradation, due to catalytically active MoS2. Interestingly, DSB-MoS2 was capable of continuous dye degradation with recyclability for three cycles, reaching an efficiency of > 83%, along with a strong antibacterial response against Gram-positive Staphylococcus aureus (S.aureus) and Gram-negative Escherichia coli (E. coli). The present study introduces a unique strategy for the up-conversion of agricultural biomass into value-added bio-adsorbents, which can effectively and economically address the remediation of dyes with simultaneous microbial decontamination from polluted wastewater streams.
- Subjects
METHYLENE blue; MICROBIAL remediation; BAGASSE; SUGARCANE; POLLUTANTS; ESCHERICHIA coli; MOLYBDENUM disulfide; DYES &; dyeing
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 11, p17494
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-024-32332-y