Durably superhydrophobic textile based on fly ash coating for oil/water separation and selective oil removal from water

Wang, Jintao; Han, Fenglan; Zhang, Shoucun

doi:10.1016/j.seppur.2016.03.038

Cited by 62 publications

(10 citation statements)

References 39 publications

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“…The optimum fly ash concentration is reported to be 0.5 wt%. However, a higher concentration than 1.25 wt% decreases the contact angle from 152°to 115° (Wang et al, 2016a). Higher concentrations decrease adhesion strength due to particle aggregation.…”

Section: Principles and Mechanismsmentioning

confidence: 94%

“…The stability and durability of a membrane are evaluated using several criteria. Immersion in solutions with extremely high or low pH (1-2 for strongly acidic and 12-13 for strongly alkaline solutions) or a high salt concentration (NaCl 3.5 wt%) for 1-72 h evaluates the durability of the membrane under harsh conditions (Wang et al, 2016a). Adding a drop of a surfactant solution (4.1 mM SDS) (Zhou et al, 2013;Han et al, 2018) or heating at a temperature between 60°C and 120°C for 72 h (Zhou et al, 2013) evaluates the membrane surface's heat resistance.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…Various abrasion tests conducted with another cotton fabric, sandpaper for 30-600 scratch cycles at 50-260 g of weight applied (Zhou et al, 2013;Huang et al, 2015Huang et al, , 2019aWang et al, 2020b), finger wipes and knife scratches (Huang et al, 2019a), ultrasonication for 2 h, and laundering 30 times (Yang et al, 2019b) were conducted to evaluate the affinity of coated particles after physical damage. The resistance of the surface to UV irradiation was evaluated by exposure to UV light (ë = 254 nm) at a distance of 10 cm for 1-6 days (Wang et al, 2016a;Huang et al, 2019a). The material's biodegradability was evaluated for environmental concerns by measuring weight loss over time due to hydrolytic degradation in a phosphate buffer solution (pH 7.4, 37°C) (Cheng et al, 2017c).…”

Section: Performance Evaluationmentioning

confidence: 99%

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Bioinspired cellulose-based membranes in oily wastewater treatment

Halim

Ernawati

Ismayati³

et al. 2021

Front. Environ. Sci. Eng.

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It is challenging to purify oily wastewater, which affects water-energy-food production. One promising method is membrane-based separation. This paper reviews the current research trend of applying cellulose as a membrane material that mimics one of three typical biostructures: superhydrophobic, underwater superoleophobic, and Janus surfaces. Nature has provided efficient and effective structures through the evolutionary process. This has inspired many researchers to create technologies that mimic nature’s structures or the fabrication process. Lotus leaves, fish scales, and Namib beetles are three representative structures with distinct functional and surface properties: superhydrophobic, underwater superoleophobic, and Janus surfaces. The characteristics of these structures have been widely studied and applied to membrane materials to improve their performance. One attractive membrane material is cellulose, whichhas been studied from the perspective of its biodegradability and sustainability. In this review, the principles, mechanisms, fabrication processes, and membrane performances are summarized and compared. The theory of wettability is also described to build a comprehensive understanding of the concept. Finally, future outlook is discussed to challenge the gap between laboratory and industrial applications.

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Section: Principles and Mechanismsmentioning

confidence: 94%

Section: Performance Evaluationmentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

See 1 more Smart Citation

Bioinspired cellulose-based membranes in oily wastewater treatment

Halim

Ernawati

Ismayati³

et al. 2021

Front. Environ. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…They also tuned the surface wettability by controlling the nucleation and growth of nanocrystals. A layered double hydroxide (LDH)-functionalized superhydrophobic/superoleophilic fabric was developed by coating commercial fabric with LDH microcrystals and low surface energy molecules [ 197 ]. These fabrics, with high separation efficiency (>97%), were used in the application of oil/water separation as well as selective oil absorption.…”

Section: Oil/water Separation (Part 2)mentioning

confidence: 99%

2D and 3D Bulk Materials for Environmental Remediation: Air Filtration and Oil/Water Separation

Lee

Choi

2020

Materials

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Air and water pollution pose an enormous threat to human health and ecosystems. In particular, particulate matter (PM) and oily wastewater can cause serious environmental and health concerns. Thus, controlling PM and oily wastewater has been a great challenge. Various techniques have been reported to effectively remove PM particles and purify oily wastewater. In this article, we provide a review of the recent advancements in air filtration and oil/water separation using two- and three-dimensional (2D and 3D) bulk materials. Our review covers the advantages, characteristics, limitations, and challenges of air filters and oil/water separators using 2D and 3D bulk materials. In each section, we present representative works in detail and describe the concepts, backgrounds, employed materials, fabrication methods, and characteristics of 2D and 3D bulk material-based air filters and oil/water separators. Finally, the challenges, technical problems, and future research directions are briefly discussed for each section.

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“…The reductions in contact angle after exposure to alkaline environment was found greater than the acidic environments due to the itching of polyester fiber surfaces in presence of alkali. As many types of materials lose their superhydrophobicity when exposed to ultraviolet irradiation, the ultraviolet durability of superhydrophobic TiO 2 -OTMS-coated polyester fabrics was also studied [43]. Compared to mechanical and chemical actions, the water contact angle of coated fabrics was not affected after exposure to ultraviolet rays and thus suitable for use under the solar radiations.…”

Section: Durability Of Superhydrophobic Properties Of Coated Polyestementioning

confidence: 99%

Self-cleaning properties of polyester fabrics coated with flower-like TiO₂ particles and trimethoxy (octadecyl)silane

Khan

Baheti

Militký

et al. 2019

Journal of Industrial Textiles

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The presented work reported the growth of 3D-shaped TiO2 flower particles on the surface of polyester fabrics using two step approaches of sol–gel technology and hydrothermal method. The scanning electron microscopy, EDS analysis, Raman spectroscopy, and X-ray diffraction techniques were employed to study the effect of titanium isopropoxide (TTIP) concentration on the growth of flower-like TiO2 microstructures. Later, a layer of trimethoxy(octadecyl)silane was applied on TiO2-coated polyester fabrics to fabricate the self-cleaning textiles. The physical self-cleaning properties were examined based on superhydrophobicity and contact angle measurements, where maximum static contact angle of 160.1o and minimum roll off angle of 3° was found for 2 mL TTIP concentration. The degradation of methyl orange dyes under UV light irradiation was observed to confirm the photocatalytic chemical self-cleaning behavior, where the samples coated with 2 mL TTIP decolorized the dye solution in 150 min, whereas the samples coated with 1 mL and 1.5 mL TTIP took almost 300 and 210 min, respectively.

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Durably superhydrophobic textile based on fly ash coating for oil/water separation and selective oil removal from water

Cited by 62 publications

References 39 publications

Bioinspired cellulose-based membranes in oily wastewater treatment

Bioinspired cellulose-based membranes in oily wastewater treatment

2D and 3D Bulk Materials for Environmental Remediation: Air Filtration and Oil/Water Separation

Self-cleaning properties of polyester fabrics coated with flower-like TiO₂ particles and trimethoxy (octadecyl)silane

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Durably superhydrophobic textile based on fly ash coating for oil/water separation and selective oil removal from water

Cited by 62 publications

References 39 publications

Bioinspired cellulose-based membranes in oily wastewater treatment

Bioinspired cellulose-based membranes in oily wastewater treatment

2D and 3D Bulk Materials for Environmental Remediation: Air Filtration and Oil/Water Separation

Self-cleaning properties of polyester fabrics coated with flower-like TiO2 particles and trimethoxy (octadecyl)silane

Contact Info

Product

Resources

About

Self-cleaning properties of polyester fabrics coated with flower-like TiO₂ particles and trimethoxy (octadecyl)silane