Anti-bacterial properties of ultrafiltration membrane modified by graphene oxide with nano-silver particles.
To improve the anti-biofouling properties of PVDF membranes, GO-Ag composites were synthesized and used as membrane antibacterial agent by a simple and environmentally friendly method. As identified by XRD, TEM and FTIR analysis, AgNPs were uniformly assembled on the synthesized GO-Ag sheets. The membranes were prepared by phase inversion method with different additional amounts (0.00-0.15wt%) of GO-Ag composites. The GO-Ag composites modified membranes show improved hydrophilicity, mechanical property and permeability than unmodified PVDF membrane. Specially, the antibacterial properties and inhibition of biofilm formation were greatly enhanced based on conventional inhibition zone test and anti-adhesion of bacterial experiment. The modified membranes also reveal a remarkable long-term continuous antimicrobial activity with slower release rate of Ag+compared to AgNPs/PVDF membrane.
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Jingchun
J
Li
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Xuyang
X
Liu
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Jiaqi
J
Lu
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Yudan
Y
Wang
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Guanglu
G
Li
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China. Electronic address: zfbhit@163.com.
Fangbo
F
Zhao
D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D001422:Bacterial Adhesion / Q000187:drug effects; D052978:Disk Diffusion Antimicrobial Tests; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D006108:Graphite / Q000737:chemistry*; D055772:Green Chemistry Technology; D057927:Hydrophobic and Hydrophilic Interactions; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides; D044367:Phase Transition; D011145:Polyvinyls / Q000737:chemistry*; D012834:Silver / Q000737:chemistry / Q000494:pharmacology*; D014462:Ultrafiltration / Q000295:instrumentation; D005465:Fluorocarbon Polymers
D000900:Anti-Bacterial Agents; D006108:Graphite; D008567:Membranes, Artificial; D010087:Oxides; D011145:Polyvinyls; D012834:Silver; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers
Anti-biofouling; Antibacterial; GO-Ag composites; Polyvinylidene fluoride (PVDF)