One-step chemical vapor deposition and modification of silica nanoparticles at the lowest possible temperature and superhydrophobic surface fabrication

Rezaei, Sasan; Manoucheri, Iraj; Moradian, Rostam; Pourabbas, Behzad

doi:10.1016/j.cej.2014.04.100

Cited by 203 publications

(59 citation statements)

References 47 publications

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“…12 Based on the model of Cassie-Baxter, an air gap is introduced between the water drop and the superhydrophobic surface, which increases the allowable pore size of the membrane and improves the permeate flux. A number of strategies have been reported under this guidance, such as sol-gel process, [16][17] plasma etching, 18 chemical vapor deposition, 19 self-assemble, 20 electrospinning, [21][22] template synthesis, 23 and phase separation. 15 Consequently, there are two ways to achieve superhydrophobic surfaces: (1) creating a rough surface on hydrophobic materials, and (2) modifying a rough surface with a low surface energy material.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic modification of PVDF–SiO₂ electrospun nanofiber membranes for vacuum membrane distillation

Dong

et al. 2015

RSC Adv.

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Electrospun nanofiber membranes having a hierarchical structure with multilevel roughness were generated via electrospinning of poly (vinylidene fluoride) (PVDF)-SiO 2 blend solutions.The composite PVDF-SiO 2 nanofiber membranes were then endowed with superhydrophobicity by the fluorosilanization of the surface with low surface energy fluoroalkylsilane (FAS). The results showed that when the SiO 2 content in the dope solutions increased from 0 wt% to 8 wt%, the water contact angles of the FAS modified nanofiber membranes increased significantly from 130.4° to 160.5°. The increment of the silica content in the dope solutions decreased the fiber diameters and pore sizes of the modified membranes, while the mechanical properties were enhanced with the silica addition. The liquid entry pressures of the membranes increased gradually from 84 kPa to 195 kPa with silica addition due to the increased contact angles and decreased pore size. Vacuum membrane distillation experiments were carried out for the modified nanofiber membranes to evaluate the anti-wetting properties. The optimal superhydrophobic nanofiber membrane maintained a stable flux of 31.5 kg/m 2 h with a permeate conductivity approximately 10 μs/cm over the entire test, while the fluxes and conductivities of the nanofiber membranes without superhydrophobicity showed a significant decrease and increase, respectively. The results indicated that the superhydrophobic modification process rendered the nanofiber membrane anti-wetting properties without compromising its excellent permeability.

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Section: Introductionmentioning

confidence: 99%

Superhydrophobic modification of PVDF–SiO₂ electrospun nanofiber membranes for vacuum membrane distillation

Dong

et al. 2015

RSC Adv.

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“…3, 5, 6, 7) are used to investigate the relationship between relative velocities and hydrophobic properties; samples (No. 3,8,9,10,11) are used to investigate the relationship between Cu nanoparticles concentrations and hydrophobic properties; samples (No. 3,11,12) are used to investigate the relationship between electroplating times and hydrophobic properties.…”

Section: Influence Of Process Parameters On Hydrophobic Propertiesmentioning

confidence: 99%

“…Hence with the help of micro/nano hierarchical structures and low surface energy materials, superhydrophobic surface can be easily fabricated. Many previous researches have proposed many methods to fabricate superhydrophobic surface, including laser processing [8], plasma etching [9], chemical vapor deposition [10], chemical etching [11], sol-gel technique [12] and electrodeposition [13]. However, all these methods are flawed in cost, hydrophobic durability and complex process, which limit their practical applications.…”

Section: Introductionmentioning

confidence: 98%

Fabrication of low adhesive superhydrophobic surfaces using nano Cu/Al 2 O 3 Ni–Cr composited electro-brush plating

Chen¹,

Liu

et al. 2015

Applied Surface Science

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“…97 A successful combination of surface roughness and low surface energy is integral to a superhydrophobic silica nanoparticles coating through a novel one-step CVD and modification method. 98 Moradian et al used tetraethylorthosilicate (TEOS), vinyltrimethoxy-silane (VTMS) 10 as the surface modifying molecule and ammonia as a catalyzer to reduce the reaction temperature. Results showed that the lowest film formation temperature is 40 °C.…”

Section: Chemical Vapor Depositionmentioning

confidence: 99%

Superhydrophobic nanocoatings: from materials to fabrications and to applications

2015

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Superhydrophobic nanocoatings, a combination of nanotechnology and superhydrophobic surfaces, have received extraordinary attention recently, focusing both on novel preparation strategies and on investigations of their unique properties. In the past few decades, inspired by the lotus leaf, the discovery of nano- and micro-hierarchical structures has brought about great change in the superhydrophobic nanocoatings field. In this paper we review the contributions to this field reported in recent literature, mainly including materials, fabrication and applications. In order to facilitate comparison, materials are divided into 3 categories as follows: inorganic materials, organic materials, and inorganic-organic materials. Each kind of materials has itself merits and demerits, as well as fabrication techniques. The process of each technique is illustrated simply through a few classical examples. There is, to some extent, an association between various fabrication techniques, but many are different. So, it is important to choose appropriate preparation strategies, according to conditions and purposes. The peculiar properties of superhydrophobic nanocoatings, such as self-cleaning, anti-bacteria, anti-icing, corrosion resistance and so on, are the most dramatic. Not only do we introduce application examples, but also try to briefly discuss the principle behind the phenomenon. Finally, some challenges and potential promising breakthroughs in this field are also succinctly highlighted.

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One-step chemical vapor deposition and modification of silica nanoparticles at the lowest possible temperature and superhydrophobic surface fabrication

Cited by 203 publications

References 47 publications

Superhydrophobic modification of PVDF–SiO₂ electrospun nanofiber membranes for vacuum membrane distillation

Superhydrophobic modification of PVDF–SiO₂ electrospun nanofiber membranes for vacuum membrane distillation

Fabrication of low adhesive superhydrophobic surfaces using nano Cu/Al 2 O 3 Ni–Cr composited electro-brush plating

Superhydrophobic nanocoatings: from materials to fabrications and to applications

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One-step chemical vapor deposition and modification of silica nanoparticles at the lowest possible temperature and superhydrophobic surface fabrication

Cited by 203 publications

References 47 publications

Superhydrophobic modification of PVDF–SiO2 electrospun nanofiber membranes for vacuum membrane distillation

Superhydrophobic modification of PVDF–SiO2 electrospun nanofiber membranes for vacuum membrane distillation

Fabrication of low adhesive superhydrophobic surfaces using nano Cu/Al 2 O 3 Ni–Cr composited electro-brush plating

Superhydrophobic nanocoatings: from materials to fabrications and to applications

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Product

Resources

About

Superhydrophobic modification of PVDF–SiO₂ electrospun nanofiber membranes for vacuum membrane distillation

Superhydrophobic modification of PVDF–SiO₂ electrospun nanofiber membranes for vacuum membrane distillation