Antibacterial photocatalytic self-cleaning poly(vinylidene fluoride) membrane for dye wastewater treatment

2017 ◽  
Vol 29 (1) ◽  
pp. 254-262 ◽  
Author(s):  
Yixin Peng ◽  
Zongxue Yu ◽  
Yang Pan ◽  
Guangyong Zeng
Keyword(s):  
Wastewater Treatment ◽  
Vinylidene Fluoride ◽  
Dye Wastewater ◽  
Poly Vinylidene Fluoride ◽  
Self Cleaning

Synthesis of Ag–SiO2–APTES Nanocomposites by Blending Poly(Vinylidene Fluoride) Membrane with Potential Applications on Dye Wastewater Treatment

NANO ◽  
2018 ◽  
Vol 13 (04) ◽  
pp. 1850034 ◽  
Author(s):  
Zongxue Yu ◽  
Xia Min ◽  
Fei Li ◽  
Qi Chen
Keyword(s):  
Electron Microscopy ◽  
Wastewater Treatment ◽  
Rhodamine B ◽  
Vinylidene Fluoride ◽  
Dye Wastewater ◽  
Zone Method ◽  
Pvdf Membrane ◽  
Assembly Method ◽  
Poly Vinylidene Fluoride ◽  
Direct Red 28

In the study, the Ag–SiO2–APTES nanocomposite was synthesized via the self-assembly method to prepare Ag–SiO2 and subsequently used 3-aminopropyltriethoxysilane (APTES) to functionalize its surface. The as-prepared Ag–SiO2–APTES nanocomposite was embedded into poly(vinylidene fluoride) (PVDF) membrane by the co-blending way to fabricate the Ag–SiO2–APTES membrane. The Ag–SiO2–APTES nanocomposites were characterized by X-ray diffraction (XRD). These membrane materials were characterized by field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM) and FT-IR spectra. The performance of membrane was investigated simultaneously for removing the organic dye methylene blue (MB), Rhodamine B, Direct Red 28 and anti-microbial ability. The experimental results demonstrated that the Ag–SiO2–APTES modified membrane were presented to be more hydrophilic with a contact angle 55.6[Formula: see text], whereas the pristine PVDF membrane was 81.8[Formula: see text]. The dye rejection ratios were also improved after adding Ag–SiO2–APTES, which reached 86.8% for MB, 87% Rhodamine B, 88% for Direct Red 28, besides, the removal rate of MB was about 98.7% at pH [Formula: see text] 11. More importantly, the Ag–SiO2–APTES membranes exhibited excellent antifouling properties for treating MB solution and could reach 85% of flux recovery ratio after four cyclic experiment. Finally, via inhibition zone method of antimicrobial test Ag–SiO2–APTES membrane exhibited the antimicrobial activity against Escherichia coli (E. coli) excellently. The novel antifouling and antibacterial Ag–SiO2–APTES membrane has a potential for dye wastewater treatment and water purity.

Fabrication of self-cleaning poly(vinylidene fluoride) membrane with micro/nanoscaled two-tier roughness

2011 ◽  
Vol 122 (2) ◽  
pp. 1268-1274 ◽  
Author(s):  
Zhenrong Zheng ◽  
Zhenya Gu ◽  
Ruiting Huo ◽  
Zhishan Luo
Keyword(s):  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride ◽  
Self Cleaning

scholarly journals Fabrication of a PVDF membrane with tailored morphology and properties via exploring and computing its ternary phase diagram for wastewater treatment and gas separation applications

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40373-40383
Author(s):  
S. Ashtiani ◽  
M. Khoshnamvand ◽  
P. Číhal ◽  
M. Dendisová ◽  
A. Randová ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Wastewater Treatment ◽  
Phase Separation ◽  
Ternary Phase ◽  
Vinylidene Fluoride ◽  
Ternary Phase Diagram ◽  
Simple Approach ◽  
Hydrophobic Properties ◽  
Pvdf Membrane ◽  
Poly Vinylidene Fluoride

We report a simple approach for tailoring the morphology of poly(vinylidene fluoride) (PVDF) membranes fabricated using a nonsolvent induced phase separation (NIPS) method that sustains both the hydrophilic and hydrophobic properties.

An attempt to fabricate a photocatalytic and hydrophobic self-cleaning coating via electrospinning

RSC Advances ◽  
2014 ◽  
Vol 4 (73) ◽  
pp. 38498-38504 ◽  
Author(s):  
Prathapan Ragesh ◽  
Shantikumar V. Nair ◽  
A. Sreekumaran Nair
Keyword(s):  
Titanium Dioxide ◽  
Vinylidene Fluoride ◽  
Polyhedral Oligomeric Silsesquioxanes ◽  
Poly Vinylidene Fluoride ◽  
Resultant Solution ◽  
Self Cleaning

Fluorinated POSS (polyhedral oligomeric silsesquioxanes, F-POSS) was blended with PVDF (poly (vinylidene fluoride)/TiO2 (titanium dioxide) composite by stirring overnight and the resultant solution was electrospun to obtain F-POSS/PVDF/TiO2 micron- and nanofibers with self-cleaning capacity.

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