Preparation And Marine Anti-fouling Performance Of Controlled-release Type Of Cu₂O Composites

In this paper,chitosan,Rosin and bentonite were used as carrier to prepare controlled-release Cu₂O composites by sodium sulfite reduction method or direct composite method.X-ray diffraction?XRD?,scanning electron microscopy?SEM?and transmission electron microscopy?TEM?were used to characterize the structure and morphology of the products.The marine anti-fouling coatings were prepared by using the Cu₂O composites as antifouling agents,and the Cu²⁺ release rate,antibacterial and marine anti-fouling performance were tested.The experimental results show that the antibacterial activity of chitosan/Cu₂O?CS/Cu₂O-1,CS/Cu₂O-2?,Rosin/Cu₂O and bentonite/Cu₂O composites are better than that of commercially available Cu₂O,the minimum inhibitory concentrations?MIC?of CS/Cu₂O-1,Rosin/Cu₂O and bentonite/Cu₂O on Staphylococcus aureus are all 0.25 mg/mL,and the MIC value of CS/Cu₂O-2 on Staphylococcus aureus is 0.5 mg/mL;The controlled-release Cu₂O composites have the function of stabilizing the release of Cu²⁺ and improving the anti-settling performance and adhesion of marine anti-fouling coating,and effectively prolonging the anti-fouling effect of marine anti-fouling coating.