Chitosan/MXene/Polymer Hybrid as a new Filter with Enhanced Hydrophobicity and degradation Properties
Abstract
Abstract The main objective of this study is to fabricate a hydrophobic filter based on MXene nanosheets and the hydrophobic polymers (PVDF and PDMS), to reduce COD of wastewater. In the first step the MXene nanosheets stabilized using chitosan physically. The formation of a completely homogeneous and uniform film confirms the full coating of the MXene nanosheets with chitosan. The second part of the study involves converting the hydrophilic surface of cellulose filter paper into a hydrophobic surface using a dip-coating method in a PDMS/PVDF solution at different times and ratios. The effect of the polymer ratio and immersion time on the hydrophobicity of the filter paper surface was investigated by measuring the contact angle. Contact angle measurements for all samples showed that the best hydrophobicity was achieved with the filter paper immersed in a polymer solution with a 4:1 ratio for 65 minutes. In the final step, the MXene/chitosan film with uniform thickness was applied onto the optimized filter paper. Structural and morphological characterization techniques were carried out using FTIR, SEM/EDS/MAP, DRS, and XRD, and the results were analyzed. The reduction of COD in water clearly confirms the successful fabrication of the composite filter based on MXene/polymer/filter paper. The main advantage of this filter is the use of low-cost filter paper as a substrate, which is transformed into a hydrophobic filter paper in the absence of commercially available hydrophobic…
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