TY - JOUR
T1 - Antibacterial rGO-CuO-Ag film with contact- and release-based inactivation properties.
AU - Alayande, Abayomi Babatunde
AU - Kim, Chang-Min
AU - Vrouwenvelder, Johannes S.
AU - Kim, In S
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the Korea Environmental Industry & Technology Institute (KEITI) through the Industrial Facilities & Infrastructure Research Program, funded by the Korea Ministry of Environment (MOE) (1485016165) and GIST Research Institute (GRI) grant funded by GIST in 2020.
PY - 2020/9/2
Y1 - 2020/9/2
N2 - To reduce the high operational costs of water treatment because of membrane biofouling, next-generation materials are being developed to counteract microbial growth. These modern anti-biofouling strategies are based on new membrane materials or membrane surface modifications. In this study, antimicrobial films comprising rGO, rGO-CuO, rGO-Ag, and rGO-CuO-Ag were synthesized, evaluated, and tested for potential biofouling control using Pseudomonas aeruginosa PAO1 as the model bacterium. The combined rGO-CuO-Ag film displayed enhanced reduction (10-log reduction) in biofouling in comparison to the rGO film (control), followed by the rGO-Ag film (8-log reduction) and rGO-CuO film (0-log reduction). This demonstrated that the use of mixed antimicrobial agents is more effective in reducing biofouling than that of a single agent. The rGO-Cu-Ag film exhibited consistent, controlled, and moderate release of silver (Ag) ions. The release of Ag ions produced a long-lasting antimicrobial effect. These results underscore the potential applications of combined antimicrobial surface-based agents in practice and further research.
AB - To reduce the high operational costs of water treatment because of membrane biofouling, next-generation materials are being developed to counteract microbial growth. These modern anti-biofouling strategies are based on new membrane materials or membrane surface modifications. In this study, antimicrobial films comprising rGO, rGO-CuO, rGO-Ag, and rGO-CuO-Ag were synthesized, evaluated, and tested for potential biofouling control using Pseudomonas aeruginosa PAO1 as the model bacterium. The combined rGO-CuO-Ag film displayed enhanced reduction (10-log reduction) in biofouling in comparison to the rGO film (control), followed by the rGO-Ag film (8-log reduction) and rGO-CuO film (0-log reduction). This demonstrated that the use of mixed antimicrobial agents is more effective in reducing biofouling than that of a single agent. The rGO-Cu-Ag film exhibited consistent, controlled, and moderate release of silver (Ag) ions. The release of Ag ions produced a long-lasting antimicrobial effect. These results underscore the potential applications of combined antimicrobial surface-based agents in practice and further research.
UR - http://hdl.handle.net/10754/665024
UR - https://linkinghub.elsevier.com/retrieve/pii/S0013935120310276
U2 - 10.1016/j.envres.2020.110130
DO - 10.1016/j.envres.2020.110130
M3 - Article
C2 - 32871149
SN - 0013-9351
SP - 110130
JO - Environmental Research
JF - Environmental Research
ER -