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Title: Nanoporous solid-state membranes modified with multi-wall carbon nanotubes with anti-biofouling property
Journal: International Journal of Nanomedicine
Author: 1. Ameneh Alizadeh, 1,2. Amir Razmjou,
3. Mehrorang Ghaedi, 4,5. Ramin Jannesar
Year: 2019
Address: 1. Department of Biotechnology,
Faculty of advanced sciences and
Technologies, University of Isfahan,
Isfahan 8174673441, Iran
2. UNescO centre for Membrane science and Technology, school of chemical
science and engineering, University of
New south Wales, sydney 2052, NsW,
Australia
3. Department of chemistry,
Yasouj University, Yasouj 75918-74831,
Iran,
4. Department of Pathology, Yasuj University of Medical sciences,
Yasuj 7591741417, Iran
5. Department of Biotechnology and Microbial Nanotechnology, Dena Pathobiology laboratory, Yasuj 7591774414, Iran
Abstract: Purpose: Nanoporous membranes have been employing more than before in applications such as biomedical due to nanometer hexagonal pores array. Biofouling is one of the important
problems in these applications that used nanoporous membranes and are in close contact with microorganisms. Surface modifcation of the membrane is one way to prevent bioflm formation; therefore, the membrane made in this work is modifed with carbon nanotubes.
Methods: In this work, nanoporous solid-state membrane (NSSM) was made by a two-step anodization method, and then modifed with carbon nanotubes (NSSM-multi-wall carbon nanotubes [MWCNT]) by a simple chemical reaction. Techniques such as atomic force microscopy (AFM), energy dispersive X-ray (EDAX), feld emission scanning electron microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR), contact angle (CA), surface free energy (SFE), protein adsorption, flow cytometry, and MTT assay were used for membrane characterization.
Results: The BSA protein adsorption capacity reduced from 992.54 to 97.24 (μg mL-1 cm-2) after modifcation. The fndings of flow cytometry and MTT assay confrmed that the number of dead bacteria was higher on the NSSM-MWCNT surface than that of control. Adsorption
models of Freundlich and Langmuir and kinetics models were studied to understand the governing mechanism by which bacteria migrate to the membrane surface.
Conclusion: The cell viability of absorbed bacteria on the NSSM-MWCNT was disrupted in direct physical contact with carbon nanotubes. Then, the dead bacteria were desorbed from the
surface of the hydrophilic membrane. The results of this research showed that NSSM-MWCNT containing carbon nanotubes have signifcant antimicrobial and self-cleaning property that can
be used in many biomedical devices without facing the eminent problem of biofouling.
Keywords: anodizing, alumina anodic membrane, antibacterial, anti-bioflm
Application: Membrane
Product Model 1: Syringe Pump
Product Model 2:
URL: #https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6407906/#