Perfluorinated superhydrophobic and oleophobic SiO2@PTFE nanofiber membrane with hierarchical nanostructures for oily fume purification

Zhu, Xianyang; Feng, Shasha; Zhao, Shuaifei; Zhang, Feng; Xu, Chong Hai; Hu, Min; Zhong, Zhaoxiang; Xing, Weihong

doi:10.1016/j.memsci.2019.117473

Cited by 64 publications

(23 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…TDM and HOMO/LUMO band gap (∆E) were also determined for different forms of interactions. TDM improved from 0.0000 for pure PTFE to16.2350,1.8486, 13 From there, HF is a signi cant thermal descriptor that de nes the energy produced in the form of heat, as the atoms exist at potentially in nite distances are linked and form a molecule [49]. Even though HF involved, may be clari ed through difference observed in the enthalpy during the formation of a single mole of a substance from its components.…”

Section: Building Ptfe Model Structuresmentioning

confidence: 99%

See 1 more Smart Citation

On the Spectroscopic Analyses of Polytetrafluoroethylene Coated with Nano ZnO and SiO2

Hegazy

Ghoneim

Ezzat

et al. 2022

Preprint

View full text Add to dashboard Cite

On polytetrafluoroethylene (PTFE) polymer nanocomposites coated with basically two metal oxides (MOs), SiO2 and ZnO, as well as a mixture of the two MOs, density functional theory (DFT) computations were performed. The B3LYPL/LAN2DZ model was used to evaluate PTFE polymer nano composites suggested model structures. The physical and electrical properties of PTFE modified on surface with ZnO and SiO2 coated layer by layer change Total dipole moment (TDM) and HOMO/LUMO band gap energy ∆Eto be 13.0082 Debye and 0.6889 eV, respectively. Moreover, TDM and band gap energy (∆E) improved to 10.6053 Debye and 0.2727 eV, respectively, when the nanofiller was increased to 8 atoms. In addition, the results of the Molecular Electrostatic Potential (MESP) and the Quantitative Structure Activity Relationship (QSAR) showed that PTFE coated with ZnO and SiO2 improved electrical characteristics and thermal stability. As PTFE coated with ZnO and SiO2 layer by layer, all stability characteristics, including electrical and thermal stability, were enhanced. The improved PTFE can be used as a corrosion-inhibiting layer for astronaut suits, according to the predicted results.

show abstract

Section: Building Ptfe Model Structuresmentioning

confidence: 99%

“…PTFE/SiO 2 composite has a superhydrophobic surface when compared to PTFE membranes [12]. PTFE/SiO 2 nano bers have shown to be a reliable invention for oily vapor puri cation due to their excellent thermal and chemical stability [13].…”

Section: Introductionmentioning

confidence: 99%

On the Spectroscopic Analyses of Polytetrafluoroethylene Coated with Nano ZnO and SiO2

Hegazy

Ghoneim

Ezzat

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Zhu et al [20] used coaxial electrospinning to fabricate a hierarchical SiO 2 /PTEE nanofiber membrane and viewed SiO 2 nanoparticle dispersion as the shell spinning solution and PTEE as the core spinning solution via in-situ surface grafting of 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane. Furthermore, the treated membrane displayed excellent durable superhydrophobic properties with a water contact angle of 173˚ ( Figure 27).…”

Section: ) Fluorocarbonsmentioning

confidence: 99%

A Review: Natural Superhydrophobic Surfaces and Applications

Jin¹,

Xing²,

Chen³

2020

JBNB

View full text Add to dashboard Cite

As the mimic biology becomes more and more important in the field of technology, superhydrophobic materials in the natural world have also become common. Superhydrophobic surfaces are used to prevent water droplets from wetting themselves which contain the micro-and nano-structures named hierarchical surfaces and exhibit the high water contact angles (WCA) that are greater than 150˚ and perfect application foreground in both our daily lives and industry. In this work, we first discuss several surface properties and their numerical models. And then we list the surface properties of a variety of natural superhydrophobic surfaces and sum up their similarities and differences. The most recent strategies of how to apply natural superhydrophobic surfaces are also introduced within the past several years. In addition, we talk about the limitations of the current generation of superhydrophobic surfaces and prospects which looks for solutions to the problems. This review aims to enable researchers to learn more about the principles and mechanisms of superhydrophobicity and perceive the new methods for creating and modifying it.

show abstract

“…The superwetting lter membrane is considered to be one of the effective means to manage oily wastewater due to its large-scale production, high ltration e ciency, and excellent mechanical properties (Li et al 2020). However, the commonly used superwetting membranes, for instance, polytetra uoroethylene (PTFE) (Zhu et al 2020), poly (vinylidene uoride) (PVDF) (Zhang et al 2013), and polypropylene (PP) (Wang et al 2020) membrane, are petroleum-based polymer materials, which are di cult to degrade in nature. In particular, the lipophilic oil/water separation material is easy to be polluted in the treating of oily wastewater that leads to poor reusability (Padaki et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Cellulose nanospheres coated polylactic acid nonwoven membranes for recyclable use in oil/water separation

Wen

et al. 2021

Cellulose

View full text Add to dashboard Cite

Oily wastewater has always been an environmental issue that we are concerned about and committed to managing. Although the superwetting membranes have been extensively studied and widely used in oil/water separation, the abundant discarded membranes are still headaches due to their non-degradable nature. In this work, all-around green, as well as superhydrophilic polylactic acid (PLA) nonwoven membrane, is designed by coating cellulose nanospheres (CNCs) with the aid of polydopamine (PDA). Abundant hydroxyl groups and hierarchical rough structure synergistically contribute to the superhydrophilicity and excellent oil/water separation performance of the resultant CNCs/PDA/PLA nonwoven membrane. Interestingly, the oil/water separation e ciency can be maintained above 98% after 100 times of repeated use. With outstanding durability, and easy controllability, the CNCs/PDA/PLA nonwoven membrane may provide effective solutions to simultaneously manage the oily wastewater and secondary pollution of the used membrane itself.

show abstract

Perfluorinated superhydrophobic and oleophobic SiO2@PTFE nanofiber membrane with hierarchical nanostructures for oily fume purification

Cited by 64 publications

References 31 publications

On the Spectroscopic Analyses of Polytetrafluoroethylene Coated with Nano ZnO and SiO2

On the Spectroscopic Analyses of Polytetrafluoroethylene Coated with Nano ZnO and SiO2

A Review: Natural Superhydrophobic Surfaces and Applications

Cellulose nanospheres coated polylactic acid nonwoven membranes for recyclable use in oil/water separation

Contact Info

Product

Resources

About