Abstract
Chitosan-glyoxal/Polyvinylpyrrolidone/MoS2 (CSG/PVP/MoS2) nanocomposites were synthesized via hydrothermal-ultrasonic method. The CSG/PVP/MoS2 nano catalyst was characterized by XRD, UV–visible spectroscopy, FTIR, SEM and X-ray photoelectron spectroscopy, and diclofenac was used for the adsorption and photo-degradation test. SEM revealed the CSG/PVP/MoS2 nanocomposite has coarse and semi-flake structure and UV–vis absorbance spectra indicated its strong UV light response. Additionally, the CSG/PVP/MoS2 presents enhanced adsorption-photocatalytic activities in comparison to CSG/PVP, and the degradation was reaching 94.5%. Kinetic study results demonstrated that the diclofenac photo-degradation could be explained by pseudo-first-order model. The material may have great potential in wastewater treatment applications. The synthesized nanomaterials were tested for their antibacterial properties against microorganisms Staphylococcus epidermidis and Pseudomonas aeruginosa. The antimicrobial property CSG/PVP/MoS2 nanocomposite was observed with a maximum of zone inhibition.
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