Antibiotic enhanced dopamine polymerization for engineering antifouling and antimicrobial membranes

• Published in: Chinese chemical letters Vol. 31; no. 3; pp. 851 - 854
• Main Authors: Zhao, Shuaifei, Golestani, Maryam, Penesyan, Anahit, Deng, Baolin, Zheng, Chunmiao, Strezov, Vladimir
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2020; Department of Chemical Engineering, University of Missouri, Columbia, MO 65211, United States%State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; Department of Environmental Sciences, Macquarie University, Sydney, NSW 2109, Australia; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China; College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China%Department of Environmental Sciences, Macquarie University, Sydney, NSW 2109, Australia%Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia%State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
• Subjects: Antimicrobial; Dopamine; Membrane fouling; Membranes; Surface modification; Antimicrobial; Surface modification; Membranes; Dopamine; Membrane fouling
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2019.05.057

Membranes with excellent antifouling and antimicrobial properties were developed using a novel antibiotic-dopamine coating system. [Display omitted] In this work, we adopt a new tobramycin (TOB)-dopamine coating system to endow thin film composite membranes with excellent antifouling and antimicrobial properties. Combining the hydrophilic and antibiofouling properties of both TOB and polydopamine, the TOB-dopamine modified membrane exhibits improved antifouling and antimicrobial properties compared with the conventional dopamine modified and unmodified membranes. The TOB-dopamine system has two advantages over the conventional modification with dopamine and tris buffer solution. First, TOB-dopamine modification is more efficient than the conventional dopamine modification due to the accelerating effect of TOB on dopamine polymerization. Second, the TOB-dopamine modified membranes exhibit better hydrophilicity, and enhanced antifouling and antimicrobial properties than the conventional dopamine modified membrane. Beyond engineering membranes, the proposed TOB-dopamine system can also be extended for wider surface hydrophilic and antimicrobial modifications.