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MoS2-functionalized sulfonated polystyrene for adsorption of rhodamine B
Kashmala Khaliq1, Adil Khan2, Shabnam Shahida1
1Department of Chemistry, University of Poonch Rawalakot AJK Pakistan shabnamshahida01@gmail.com.
RSC Advances
|January 8, 2026
Summary
A novel composite material selectively removes rhodamine B (RhB) dye from water. This cost-effective adsorbent, molybdenum disulfide-incorporated sulfonated polystyrene (MOSP), demonstrates high capacity and stability for wastewater treatment.
Area of Science:
- Materials Science
- Environmental Chemistry
- Nanotechnology
Background:
- Wastewater contamination by synthetic dyes like rhodamine B (RhB) poses environmental risks.
- Developing efficient and selective adsorbents is crucial for dye removal from industrial effluents.
Purpose of the Study:
- To synthesize and characterize a novel composite material for selective rhodamine B removal.
- To investigate the adsorption mechanism, kinetics, and thermodynamics of rhodamine B onto the composite.
Main Methods:
- Synthesis of molybdenum disulfide-incorporated sulfonated polystyrene (MOSP) composite.
- Material characterization using SEM-EDS, XRD, Raman, FTIR, BET, and TGA.
- Batch adsorption experiments to optimize conditions and evaluate performance, including selectivity studies.
Main Results:
- MOSP exhibited a high adsorption capacity of 400 mg g-1 for RhB, following the Langmuir isotherm model.
- Adsorption followed pseudo-second-order kinetics, reaching equilibrium within one hour, indicating chemisorption.
- The composite maintained over 90% efficiency in the presence of various metal ions, demonstrating high selectivity.
Conclusions:
- MOSP is a highly effective, selective, and stable adsorbent for rhodamine B removal from aqueous solutions.
- The material's properties suggest strong potential for cost-effective, large-scale industrial wastewater treatment applications.
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