Innovative electrospun macromolecule-based nanofibers for cationic dye removal and antibacterial applications

Area of Science:

• Materials Science
• Environmental Science
• Nanotechnology

Background:

• Methylene blue (MB) is a common pollutant in wastewater.
• Developing efficient adsorbents and antimicrobial agents is crucial for environmental remediation and public health.

Purpose of the Study:

• To synthesize and characterize a novel nanocomposite fiber membrane (SLS-PCL/BT) for MB adsorption and antibacterial activity.
• To evaluate the adsorption performance and antibacterial efficacy of the developed nanofibers.

Main Methods:

• Nanocomposite fibers (SLS-PCL/BT) were fabricated using electrospinning.
• Adsorption studies were conducted using batch tests to optimize parameters like pH, contact time, and temperature.
• Adsorption isotherms and kinetics were analyzed using Langmuir and pseudo-second-order models.
• Antibacterial activity was assessed against pathogenic bacteria (S. aureus, B. subtilis, E. coli, Salmonella).

Main Results:

• The SLS-PCL/BT nanofibers achieved a maximum MB adsorption capacity of 68.79 mg g⁻¹.
• Adsorption followed Langmuir isotherm and pseudo-second-order kinetic models, indicating efficient dye removal.
• The nanocomposite fibers demonstrated good reusability over 5 cycles.
• Significant antibacterial activity was observed against tested bacterial strains, with inhibition zones up to 25 mm.

Conclusions:

• SLS-PCL/BT nanofibers are highly effective and reusable adsorbents for MB removal from aqueous solutions.
• The developed material possesses significant antibacterial properties, offering potential for dual applications in water treatment and hygiene.