Superhydrophobic self-floating carbon nanofiber coating for efficient gravity-directed oil/water separation

Siddiqui, Abdul Rahim; Maurya, Rita; Balani, Kantesh

doi:10.1039/c6ta10411h

Cited by 86 publications

(39 citation statements)

References 61 publications

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“…The separation efficiency of the as‐prepared superhydrophilic mesh was calculated according to the following equation:

Separation efficiency (normalSE) = \frac{{normalv}_{2}}{{normalv}_{1}} \times 100 %

where V 1 and V 2 are the respective volumes of water before and after separation. Figure i clearly shows that the separation efficiency was more than 96.0% for all the seven oil–water mixtures (1:1, v/v).…”

Section: Resultsmentioning

confidence: 99%

Transparent Surfactant/Epoxy Composite Coatings with Self‐Healing and Superhydrophilic Properties

Tan

et al. 2019

Macro Materials & Eng

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In this paper, highly transparent, robust, and superhydrophilic polyethylene glycol tert‐octylphenyl ether nonionic surfactant/epoxy (Triton X‐100/epoxy, TXE) composite coatings are successfully prepared with a facile, one‐step drop‐casting method by mixing Triton X‐100 with an epoxy resin and an amine curing agent. The hydrogen bond reaction between the hydroxyl group of Triton X‐100 and the ether group of the epoxy resin improves the compatibility and reduces the glass transition temperature (Tg) of the TXE composite coatings. The free Triton X‐100 surfactant easily accumulates on the surface of the TXE composite coatings, which improves the hydrophilicity of the TXE composite coatings. The TXE composite coatings are self‐healable because of their low Tg and the migration of Triton X‐100 small molecule surfactant. Any damage arising from denting, cutting, or wiping by tetrahydrofuran can be healed, and the composite coating can regain its superhydrophilic properties through a heating process. The TXE composite coatings demonstrate excellent acid, alkali, salt, high temperature, and ultrasonic‐resistant properties. This facile preparation technique has the potential to be applied in the scalable fabrication of multifunctional coatings in anti‐fogging, oil–water separation, and optical–electric devices.

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“…The separation efficiency of the as‐prepared superhydrophilic mesh was calculated according to the following equation:

Separation efficiency (normalSE) = \frac{{normalv}_{2}}{{normalv}_{1}} \times 100 %

Section: Resultsmentioning

confidence: 99%

Transparent Surfactant/Epoxy Composite Coatings with Self‐Healing and Superhydrophilic Properties

Tan

et al. 2019

Macro Materials & Eng

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“…The CCF possesses very low surface free energy per unit area of 0.25 mJ m -2 , with polar and dispersion components of 0.031 and 0.22 mJ m -2 , respectively. It should be noted that the surface free energy per unit area of the CCF is substantially lower than the recently reported materials for oil-water separation work of Siddiqui et al [27], which is primarily because of lower dispersion components. This is attributed to the coating of carbon nanofiber on the surface.…”

Section: Tablementioning

confidence: 96%

“…The value of surface energy ( ) of a solid is a contribution of the polar ( ) and dispersive ( ) components, which can be described by the following equation [25][26][27]:…”

Section: Evaluation Of Wettability With Various Surface Tension Liquimentioning

confidence: 99%

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Fabrication of durable super-repellent surfaces on cotton fabric with liquids of varying surface tension: Low surface energy and high roughness

Singh

2017

Applied Surface Science

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“…Swelling behavior of fiber mats were carried out in a phosphate buffer with a pH of 6.8 via the gravimetric method [21][22][23]. The percentage swelling index was calculated by determining the ratio of the weight of water adhered on the nanofibers to the weight of dried nanofibers.…”

Section: Swelling Index and In Vitro Drug Releasementioning

confidence: 99%

Tolnaftate-Loaded PolyacrylateElectrospun Nanofibers for an Impressive Regimen on Dermatophytosis

Misra

Pandey

Patil

et al. 2017

Fibers

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Dermatophytosis, topical fungal infection is the most common cause of skin bug in the world, generally underestimated and ignored. It is commonly caused by immensely mortifying and keratinophilic fungal eukaryotes which invade keratinized tissues and generate different tinea diseases in Mediterranean countries. We herein fabricated nanofibers/scaffolds embedded with thiocarbamate derivative topical antifungal tolnaftatefor the first time to target the complete elimination of dermatophyte at the site of infection. In this regard, variable combinations of biocompatible Eudragit grades (ERL100 and ERS100) were selected to provide better adhesion on the site of dermatophytosis, ample absorption of exudates during treatment, and customized controlled drug release. Surface topography analysis indicated that the fabricated nanofibers were regular and defect-free, comprising distinct pockets with nanoscaled diameters. Characterization and compatibility studies of tolnaftate, polymers, and their nanofibers were performed through ATR-FTIR, TGA, and PXRD. Remarkable hydrophilicity and an excellent swelling index were obtained from a 3:1 ratio of ERL100/ERS100 electrospun D3 nanofibers, which is an essential benchmark for the fabrication of nanofibrous scaffolds for alleviating dermatophytosis. In vitro drug release investigation revealed that a nonwoven nanomesh of nanofibers could control the rate of drug release for 8 h. A microdilution assay exhibited inhibition of more than 95% viable cells of Trichophyton rubrum for 96 h. However, Microsporum species rigidly restricted the effect of bioactive antifungal nanofibers and hence showed resistance. In vivo activity on Trichophyton rubrum infected Swiss albino mice revealed complete inhibition of fungal pathogens on successive applications of D3 nanofibers for 7 days. This investigation suggests potential uses of tolnaftate loaded polyacrylate nanofibers as dressing materials/scaffolds for effective management of dermatophytosis.

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Superhydrophobic self-floating carbon nanofiber coating for efficient gravity-directed oil/water separation

Abstract: The fabrication of a superhydrophobic carbon nanofiber (CNF) on various substrates via a two-step process is reported, eliminating the need for multiple pre- and post-treatments with toxic chemicals.

Cited by 86 publications

References 61 publications

Transparent Surfactant/Epoxy Composite Coatings with Self‐Healing and Superhydrophilic Properties

Transparent Surfactant/Epoxy Composite Coatings with Self‐Healing and Superhydrophilic Properties

Fabrication of durable super-repellent surfaces on cotton fabric with liquids of varying surface tension: Low surface energy and high roughness

Tolnaftate-Loaded PolyacrylateElectrospun Nanofibers for an Impressive Regimen on Dermatophytosis

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