Hierarchically superhydrophilic poly(vinylidene fluoride) membrane with self-cleaning fabricated by surface mineralization for stable separation of oily wastewater

2021 ◽  
Vol 640 ◽  
pp. 119864
Author(s):  
Fangshu Qu ◽  
Akun Cao ◽  
Yang Yang ◽  
Sakil Mahmud ◽  
Peiyang Su ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Oily Wastewater ◽  
Poly Vinylidene Fluoride ◽  
Self Cleaning

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

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.

scholarly journals Polymer-Based Membranes for Oily Wastewater Remediation

Polymers ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 42 ◽  
Author(s):  
Djamila Zioui ◽  
Hugo Salazar ◽  
Lamine Aoudjit ◽  
Pedro M. Martins ◽  
Senentxu Lanceros-Méndez
Keyword(s):  
Tio2 Nanoparticles ◽  
Vinylidene Fluoride ◽  
Environmental Concern ◽  
Industrial Effluent ◽  
Average Diameter ◽  
Porous Matrix ◽  
Oily Wastewater ◽  
Wastewater Remediation ◽  
Sunlight Irradiation ◽  
Poly Vinylidene Fluoride

The compounds found in industrial wastewater typically show high toxicity, and in this way, they have become a primary environmental concern. Several techniques have been applied in industrial effluent remediation. In spite of the efforts, these techniques are yet to be ineffective to treat oily wastewater before it can be discharged safely to the environment. Membrane technology is an attractive approach to treat oily wastewater. This is dedicated to the immobilisation of TiO2 nanoparticles on poly(vinylidene fluoride–trifluoro ethylene) (PVDF-TrFE) porous matrix by solvent casting. Membranes with interconnected pores with an average diameter of 60 µm and a contact angle of 97°, decorated with TiO2 nanoparticles, are obtained. The degradation of oily wastewater demonstrated the high photocatalytic efficiency of the nanocomposite membranes: Under sunlight irradiation for seven hours, colourless water was obtained.

scholarly journals Photocatalytic Polymeric Nanocomposite Membrane Towards Oily Wastewater

2019 ◽  
Author(s):  
Djamila Zioui ◽  
Hugo Salazar ◽  
Lamin Audjit ◽  
Pedro Martins ◽  
Senentxu Lanceros-Mendez
Keyword(s):  
Tio2 Nanoparticles ◽  
Oil And Gas ◽  
Vinylidene Fluoride ◽  
Environmental Concern ◽  
Industrial Effluents ◽  
Average Diameter ◽  
Porous Matrix ◽  
Oily Wastewater ◽  
Wastewater Remediation ◽  
Poly Vinylidene Fluoride

Production of wastewater related to the oil and gas industries is increasing over the years. The compounds found in industrial wastewater typically show high toxicity, and in this way, they have become a primary environmental concern. Several techniques have been applied in industrial effluents remediation. In spite of the efforts, these techniques are yet ineffective to treat oily wastewater before it can be discharged safely to the environment. Membrane technology is an attractive approach to treat oily wastewater. This is dedicated to the immobilisation of TiO2 nanoparticles on poly (vinylidene fluoride–trifluoro ethylene) (PVDF-TrFE) porous matrix by solvent casting. Membranes with interconnected pores with an average diameter of 60 micrometres and the contact angle of 97°, decorated with TiO2 nanoparticles, are obtained. The degradation of oily wastewater demonstrated the remarkable photocatalytic efficiency of the nanocomposite membranes: under sunlight irradiation for 7 hours, colourless water was obtained. These results show the suitability of TiO2/P(VDF–TrFE) nanocomposite for photocatalytic applications for oily wastewater remediation.

Piezoelectric β-polymorph formation of new textiles by surface modification with coating process based on interfacial interaction on the conformational variation of poly (vinylidene fluoride) (PVDF) chains

2020 ◽  
Vol 91 (3) ◽  
pp. 31301
Author(s):  
Nabil Chakhchaoui ◽  
Rida Farhan ◽  
Meriem Boutaldat ◽  
Marwane Rouway ◽  
Adil Eddiai ◽  
...  
Keyword(s):  
High Efficiency ◽  
Vinylidene Fluoride ◽  
Research Work ◽  
Research Area ◽  
Interfacial Interaction ◽  
Tetraethyl Orthosilicate ◽  
Poly Vinylidene Fluoride ◽  
Carbon Nanofillers ◽  
The Impact ◽  
Advanced Applications

Novel textiles have received a lot of attention from researchers in the last decade due to some of their unique features. The introduction of intelligent materials into textile structures offers an opportunity to develop multifunctional textiles, such as sensing, reacting, conducting electricity and performing energy conversion operations. In this research work nanocomposite-based highly piezoelectric and electroactive β-phase new textile has been developed using the pad-dry-cure method. The deposition of poly (vinylidene fluoride) (PVDF) − carbon nanofillers (CNF) − tetraethyl orthosilicate (TEOS), Si(OCH2CH3)4 was acquired on a treated textile substrate using coating technique followed by evaporation to transform the passive (non-functional) textile into a dynamic textile with an enhanced piezoelectric β-phase. The aim of the study is the investigation of the impact the coating of textile via piezoelectric nanocomposites based PVDF-CNF (by optimizing piezoelectric crystalline phase). The chemical composition of CT/PVDF-CNC-TEOS textile was detected by qualitative elemental analysis (SEM/EDX). The added of 0.5% of CNF during the process provides material textiles with a piezoelectric β-phase of up to 50% has been measured by FTIR experiments. These results indicated that CNF has high efficiency in transforming the phase α introduced in the unloaded PVDF, to the β-phase in the case of nanocomposites. Consequently, this fabricated new textile exhibits glorious piezoelectric β-phase even with relatively low coating content of PVDF-CNF-TEOS. The study demonstrates that the pad-dry-cure method can potentially be used for the development of piezoelectric nanocomposite-coated wearable new textiles for sensors and energy harvesting applications. We believe that our study may inspire the research area for future advanced applications.

Sign in / Sign up

Export Citation Format

Share Document