Facile Fabrication of Superhydrophobic/Superoleophilic Cotton for Highly Efficient Oil/Water Separation

Wang, Qing; Yu, Mingguang; Chen, Guangxue; Chen, Qifeng; Tai, Jinglei

doi:10.15376/biores.12.1.643-654

Cited by 10 publications

(8 citation statements)

References 18 publications

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“…However, in each recycling, the adsorption capacity decreased drastically. Similar results have been reported in [42][43][44]. Even though the adsorption method has been widely used in the treatment of oily wastewater, the adsorbents have to replace after a relatively short period of operation or need to be removed.…”

Section: Adsorptionsupporting

confidence: 87%

A Review on Membrane Technology and Chemical Surface Modification for the Oily Wastewater Treatment

et al. 2020

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Cleaning of wastewater for the environment is an emerging issue for the living organism. The separation of oily wastewater, especially emulsified mixtures, is quite challenged due to a large amount of wastewater produced in daily life. In this review, the membrane technology for oily wastewater treatment is presented. In the first part, the global membrane market, the oil spill accidents and their results are discussed. In the second and third parts, the source of oily wastewater and conventional treatment methods are represented. Among all methods, membrane technology is considered the most efficient method in terms of high separation performance and easy to operation process. In the fourth part, we provide an overview of membrane technology, fouling problem, and how to improve the self-cleaning surface using functional groups for effectively treating oily wastewater. The recent development of surface-modified membranes for oily wastewater separation is investigated. It is believed that this review will promote understanding of membrane technology and the development of surface modification strategies for anti-fouling membranes.

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Section: Adsorptionsupporting

confidence: 87%

A Review on Membrane Technology and Chemical Surface Modification for the Oily Wastewater Treatment

et al. 2020

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“…Silica modified cellulose fibers were prepared via a modified Stöber method [36]. In a typical procedure, 0.5 g of dry cellulose fibers (75 SR°) and 100 mL ethanol were added into a 250 mL three-neck round bottom flask with gentle stirrer until materials were completely dispersed.…”

Section: Methodsmentioning

confidence: 99%

Facile Approach to Develop Hierarchical Roughness fiber@SiO2 Blocks for Superhydrophobic Paper

Wang¹,

Xiong

Chen

et al. 2019

Materials

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Papers with nanoscaled surface roughness and hydrophobically modification have been widely used in daily life. However, the relatively complex preparation process, high costs and harmful compounds have largely limited their applications. This research aims to fabricate superhydrophobic papers with low cost and nontoxic materials. The surface of cellulose fibers was initially coated with a film of SiO2 nanoparticles via sol-gel process. After papermaking and subsequent modification with hexadecyltrimethoxysilane through a simple solution-immersion process, the paper showed excellent superhydrophobic properties, with water contact angles (WCA) larger than 150°. Moreover, the prepared paper also showed superior mechanical durability against 10 times of deformation. The whole preparation process was carried out in a mild environment, with no intricate instruments or toxic chemicals, which has the potential of large-scale industrial production and application.

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“…A Dataphysics OCA20 contact angle system was used to measure water contact angles (WCAs) of samples with liquid droplets of 5 μL. The oil absorption capacity of samples was determined according to the previously reported method [42].…”

Section: Methodsmentioning

confidence: 99%

“…Cotton with three-dimensional architecture can achieve a large volume of oil absorption during oil/water separation. However, as far as it is known, there are relatively few reports about cotton fiber directly used as a three-dimensional absorbent material for oil/water separation [40,41,42].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Magnetic, Durable and Superhydrophobic Cotton for Efficient Oil/Water Separation

Wang

et al. 2019

Polymers

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In this paper, we present a facile and efficient strategy for the fabrication of magnetic, durable, and superhydrophobic cotton for oil/water separation. The superhydrophobic cotton functionalized with Fe3O4 magnetic nanoparticles was prepared via the in situ coprecipitation of Fe2+/Fe3+ ions under ammonia solution on cotton fabrics using polyvinylpyrrolidone (PVP) as a coupling agent and hydrophobic treatment with tridecafluorooctyl triethoxysilane (FAS) in sequence. The as-prepared cotton demonstrated excellent superhydrophobicity with a water contact angle of 155.6° ± 1.2° and good magnetic responsiveness. Under the control of the external magnetic field, the cotton fabrics could be easily controlled to absorb the oil from water as oil absorbents, showing high oil/water separation efficiency, even in hot water. Moreover, the cotton demonstrated remarkable mechanical durable properties, being strongly friction-resistant against sandpaper and finger wipe, while maintaining its water repellency. This study developed a novel and efficient strategy for the construction of magnetic, durable, and superhydrophobic biomass-based adsorbent for oil/water separation, which can be easily scaled up for practical oil absorption.

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Facile Fabrication of Superhydrophobic/Superoleophilic Cotton for Highly Efficient Oil/Water Separation

Cited by 10 publications

References 18 publications

A Review on Membrane Technology and Chemical Surface Modification for the Oily Wastewater Treatment

A Review on Membrane Technology and Chemical Surface Modification for the Oily Wastewater Treatment

Facile Approach to Develop Hierarchical Roughness fiber@SiO2 Blocks for Superhydrophobic Paper

Facile Fabrication of Magnetic, Durable and Superhydrophobic Cotton for Efficient Oil/Water Separation

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