Abstract
The design and synthesis of water-insoluble chitosan-based polymer carbon dots (P (CS-g-CA)CDs) are described. Then, a polyvinyl alcohol/chitosan-based polymer carbon dots (PVA/P (CS-g-CA)CDs) composite film was prepared by a simple casting method to be used in dye adsorption. The composite film was characterized using FTIR, XPS, transparency, contact angle, and mechanical properties tests, which showed the successful incorporation of P (CS-g-CA)CDs into the film and also revealed that hydrogen bonding improved the mechanical properties of the PVA film. Furthermore, the composite film displayed substantially enhanced hydrophobicity, making it suitable for use in water environments. In addition, the composite film exhibited stable adsorption of acid blue 93 (AB93) at pH 2-9, with an enhanced adsorption capacity of 433.24 mg/g. The adsorption obeyed the Langmuir law and with an efficiency of greater than 89% even after five cycles. Therefore, the PVA/P (CS-g-CA)CDs film is a promising material for the treatment of organic dye-polluted wastewater.
Published Version
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