Preparation and property of extremely stable superhydrophobic carbon fibers with core-shell structure

Feng, Shizhan; Luo, Wanxia; Wang, Luxiang; Zhang, Su; Guo, Nannan; Xu, Mengjiao; Zhao, Zongbin; Jia, Dianzeng; Wang, Xingchao; Jia, Lixia

doi:10.1016/j.carbon.2019.05.021

Cited by 59 publications

(22 citation statements)

References 50 publications

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“…The selective separation of contaminants from water has been extensively researched because of its increasing remediation requirements . Currently, considerable attention is being paid to removing insoluble oils from wastewater using sponges, polymer fabrics/membranes, , and metal meshes with special selective surface wettability. These methods usually cannot remove soluble organic pollutants in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Self-Locked and Self-Cleaning Membranes for Efficient Removal of Insoluble and Soluble Organic Pollutants from Water

Wang

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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A feasible and efficient membrane for long-term treatment of complex oily wastewater is especially in demand, but its development still remains a challenge because of serious membrane fouling and incomplete/destructive reclamation methods. Herein, an interpenetrating TiO2 nanorod-decorated membrane with self-locked and self-cleaning properties is rationally fabricated via coaxial electrospinning and hydrothermal synthesis. The self-locked membrane shows full reinstatement of the original state and exhibits satisfactory mechanical strength, superhydrophilicity, underwater superoleophobicity, and robust solvent resistance, which endow the membrane with successful separation for 16 types of highly emulsified oil-in-water emulsions (e.g., surfactant-free; anionic, cationic, and nonionic surfactant-stabilized). Moreover, successful sequencing treatment of soluble organic emulsions using the separated “bait–hook–destroy” strategy indicates that the pristine membrane can be used to treat multipollutant wastewater with various limits. Most importantly, the fouled membrane can easily be reinstated by light irradiation without reduction of both mechanical strength and separation performance. As a proof of concept, the as-synthesized membrane shows an ultrahigh flux over 5000 L m–2 h–1 with a removal efficiency of >99.92%. The present development would provide a highly efficient strategy for the fabrication of an inorganic–organic revivable electrospinning membrane for various applications.

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Section: Introductionmentioning

confidence: 99%

Self-Locked and Self-Cleaning Membranes for Efficient Removal of Insoluble and Soluble Organic Pollutants from Water

Wang

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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“…250 nm) is much larger than that of MCNF-5 (ca. 160 nm) because of the lower conductivity of the spinning solution used for preparing the electrospun membrane. , It is worth noting that notwithstanding the diameter of P-CNF is similar to MCNF-7.5 (ca. 130 nm), and the contact angle of MCNF-7.5 (25°) is much lower than that of P-CNF (108°), indicating that the diameter is not the only factor to determine the hydrophilicity of the samples. , Furthermore, the hydrophilicity of the MCNF is gradually improved along with the increasing of ferrocene content (Figure d).…”

Section: Resultsmentioning

confidence: 99%

Enabling a Large Accessible Surface Area of a Pore-Designed Hydrophilic Carbon Nanofiber Fabric for Ultrahigh Capacitive Deionization

Gong

Zhang

Luo

et al. 2020

ACS Appl. Mater. Interfaces

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Although porous carbons have been widely used for capacitive deionization, the low accessible surface area because of the hydrophobic microporous structure results in unsatisfied desalination capacity, which drastically hinders their practical application. Herein, a novel carbon nanofiber fabric with a large accessible surface area was prepared by electrospinning using the uniformly dispersed ferrocene as a pore former. The carbon nanofiber fabric with good mechanical strength and flexibility can be directly used as a filter membrane to filter simulated sandy seawater. The high content of heteroatoms increases the surface polarity of the carbon nanofiber, while the well-controlled interconnected mesoporous structure of the optimized sample facilitates fast transport and adsorption of hydrated Na+ and Cl–. Thus, the hydrophilic carbon nanofiber fabric shows a Brunauer–Emmett–Teller surface area of 922 m2 g–1 and a large accessible surface area of 405 m2 g–1, leading to a high capacitance of 263 F g–1 in the NaCl electrolyte. Most importantly, it shows an ultrahigh desalination capacity of 19.34 mg g–1, which is much higher than most of the previously reported carbon materials. The high desalination capacity, fast adsorption rate, and good cycle stability make the as-prepared carbon nanofiber fabric an attractive candidate for practical application.

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“…Dong et al synthesized a monolithic three-dimensional (3D) hybrid of graphene and carbon nanotube foam by two-step CVD for the selective removal of oils from water with high absorption capacity and good recyclability [26]. Feng et al prepared superhydrophobic carbon fibers (SCFs) with a core-shell structure by electrospinning technology combined with a subsequent CVD method; here, the CVD graphitic carbon layer with low surface energy results in a WCA as high as 159.5 • [27]. Deng et al used candle soot as a template which was then shelled with silica by the CVD of tetraethoxysilane (TES) catalyzed by ammonia; the shells were also coated with a semifluorinated silane by CVD to reduce the surface energy [28].…”

Section: Chemical Vapor Deposition (Cvd) Methodsmentioning

confidence: 99%

Superhydrophobic Civil Engineering Materials: A Review from Recent Developments

Xiang

Fang

et al. 2019

Coatings

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Superhydrophobic surfaces have drawn attention from scientists and engineers because of their extreme water repellency. More interestingly, these surfaces have also demonstrated an infinite influence on civil engineering materials. In this feature article, the history of wettability theory is described firstly. The approaches to construct hierarchical micro/nanostructures such as chemical vapor deposition (CVD), electrochemical, etching, and flame synthesis methods are introduced. Then, the advantages and limitations of each method are discussed. Furthermore, the recent progress of superhydrophobicity applied on civil engineering materials and its applications are summarized. Finally, the obstacles and prospects of superhydrophobic civil engineering materials are stated and expected. This review should be of interest to scientists and civil engineers who are interested in superhydrophobic surfaces and novel civil engineering materials.

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Preparation and property of extremely stable superhydrophobic carbon fibers with core-shell structure

Cited by 59 publications

References 50 publications

Self-Locked and Self-Cleaning Membranes for Efficient Removal of Insoluble and Soluble Organic Pollutants from Water

Self-Locked and Self-Cleaning Membranes for Efficient Removal of Insoluble and Soluble Organic Pollutants from Water

Enabling a Large Accessible Surface Area of a Pore-Designed Hydrophilic Carbon Nanofiber Fabric for Ultrahigh Capacitive Deionization

Superhydrophobic Civil Engineering Materials: A Review from Recent Developments

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