A novel strategy for fabricating robust superhydrophobic fabrics by environmentally-friendly enzyme etching

Cheng, Yan; Zhu, Tianxue; Li, Shuhui; Huang, Jianying; Mao, Jiajun; Yang, Hui; Gao, Shouwei; Chen, Zhong; Lai, Yuekun

doi:10.1016/j.cej.2018.08.113

Cited by 195 publications

(73 citation statements)

References 49 publications

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“…Such surfaces may find a wide range of applications from textile industry to power network design and maintenance [7]. Many studies have been done on water-repellent self-cleaning fabrics [8,9]. Superhydrophobic surfaces may be used in biomedical applications, vessel replacements or wound management [2,10,11].…”

Section: Introductionmentioning

confidence: 99%

Development of Organosilicon-Based Superhydrophobic Coatings through Atmospheric Pressure Plasma Polymerization of HMDSO in Nitrogen Plasma

et al. 2019

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Water-repellent surfaces, often referred to as superhydrophobic surfaces, have found numerous potential applications in several industries. However, the synthesis of stable superhydrophobic surfaces through economical and practical processes remains a challenge. In the present work, we report on the development of an organosilicon-based superhydrophobic coating using an atmospheric-pressure plasma jet with an emphasis on precursor fragmentation dynamics as a function of power and precursor flow rate. The plasma jet is initially modified with a quartz tube to limit the diffusion of oxygen from the ambient air into the discharge zone. Then, superhydrophobic coatings are developed on a pre-treated microporous aluminum-6061 substrate through plasma polymerization of HMDSO in the confined atmospheric pressure plasma jet operating in nitrogen plasma. All surfaces presented here are superhydrophobic with a static contact angle higher than 150° and contact angle hysteresis lower than 6°. It is shown that increasing the plasma power leads to a higher oxide content in the coating, which can be correlated to higher precursor fragmentation, thus reducing the hydrophobic behavior of the surface. Furthermore, increasing the precursor flow rate led to higher deposition and lower precursor fragmentation, leading to a more organic coating compared to other cases.

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Section: Introductionmentioning

confidence: 99%

Development of Organosilicon-Based Superhydrophobic Coatings through Atmospheric Pressure Plasma Polymerization of HMDSO in Nitrogen Plasma

et al. 2019

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“…For example, besides mild reaction conditions, efficient catalytic performance and high selectivity to substrates, 2–6 protection and/or activation of functional groups can often be avoided in many cases because of the regioselectivity to substrates of enzymes. Moreover, compared to conventional chemical synthesis, 7 enzymatic reactions are environmentally friendly processes, and can generate less waste, and reduce the consumption of materials and energy 8–10 . However, as natural proteins, enzymes lack operational stability and it is difficult to separate them from reaction solutions for re‐use.…”

Section: Introductionmentioning

confidence: 99%

CPO‐Fe₃O₄@mTiO₂ nanocomposite with integrated magnetic separation and enzymatic and photocatalytic activities in efficient degradation of organic contaminants in wastewater

Wang

Cheng

Gao

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Immobilization of enzymes on a nanocarrier can improve their stability, but is often accompanied by a reduction of the initial catalytic activity. Meanwhile, inevitable mass loss during centrifugal separation inhibits reusability. It is still a challenge to design and prepare an immobilized enzyme with both improved catalytic activity and reusability simultaneously. RESULTS Core–shell magnetic microspheres (Fe3O4@mTiO2) with mesoporous structure were prepared and used to construct an enzymatic nanocomposite (CPO‐Fe3O4@mTiO2). This material can combine magnetic separability, photocatalytic property of TiO2 and enzymatic activity of chloroperoxidase (CPO) when applied in the degradation of aqueous organic contaminants diphenylamine and pesticide residue isoproturon. Moreover, CPO‐Fe3O4@mTiO2 showed good stability and reusability. It can keep 78.0% and 66.8% of its initial activity after incubation at 80 and 90 °C for 1 h, respectively, while free CPO only retained 18.3% and 6.9% of its original activity for the same conditions. After being used for eight cycles, CPO‐Fe3O4@mTiO2 can retain over 82.2% of activity. When applied in the degradation of isoproturon/diphenylamine in artificial wastewater, 60 μmol L−1 isoproturon can be completely degraded in 30 min; 82.2% of diphenylamine can be degraded at a concentration of 10 μmol L−1. Compared with the removal of aqueous contaminants using a porous adsorbent, CPO‐Fe3O4@mTiO2 can be regenerated ‘online’, obviating complicated procedures for regeneration. CONCLUSIONS The results indicate that CPO‐Fe3O4@mTiO2 has potential for practical application in the treatment of wastewater. © 2021 Society of Chemical Industry

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“…To date, commercial resins [5][6][7], fibers [8][9][10], mineral products [11,12], and other absorption materials [13,14] are deemed cheap and easy to obtain, and have been developed and widely used in oil-water separation applications. However, these traditional absorbents have some shortcomings, such as poor selectivity, low absorptivity, difficulty in large-scale manufacturing, and complex 1 h to form a uniform water solution.…”

Section: Introductionmentioning

confidence: 99%

In-Situ Synthesis of Hydrophobic Polyurethane Ternary Composite Induced by Hydroxyethyl Cellulose through a Green Method for Efficient Oil Removal

et al. 2020

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Hydroxyethyl cellulose (HEC) was introduced to activate the surface of polyurethane (PU) sponge to successfully prepare a hydrophobic ternary composite PU/HEC/SiO2. The hydrophobic layer of the composite was realized by in-situ polymerization of methyltriethoxysilane (MTES) onto the surface of PU sponge. The formation of a stable hydrophobic SiO2 layer solved successfully the problem of ease of SiO2 particles shedding from the composite. Moreover, the amphiphilic molecules produced by the hydrolysis of MTES monomers facilitated the preparation of hydrophobic materials by aqueous dispersion polymerization. Aqueous synthesis made the reaction process environmentally-friendly and pollution-free. The as-prepared composite PU/HEC/SiO2 not only retains high porosity and low density of the PU sponge, but also considerably reduced the surface free energy and increased the surface roughness of the PU sponge. Therefore, outstanding hydrophobicity and high porosity endow the composite with excellent oil removal capability as a high-efficiency absorbent. Moreover, the hydrophobic composite that had absorbed oil could be regenerated easily by squeezing and recycling.

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A novel strategy for fabricating robust superhydrophobic fabrics by environmentally-friendly enzyme etching

Cited by 195 publications

References 49 publications

Development of Organosilicon-Based Superhydrophobic Coatings through Atmospheric Pressure Plasma Polymerization of HMDSO in Nitrogen Plasma

Development of Organosilicon-Based Superhydrophobic Coatings through Atmospheric Pressure Plasma Polymerization of HMDSO in Nitrogen Plasma

CPO‐Fe₃O₄@mTiO₂ nanocomposite with integrated magnetic separation and enzymatic and photocatalytic activities in efficient degradation of organic contaminants in wastewater

In-Situ Synthesis of Hydrophobic Polyurethane Ternary Composite Induced by Hydroxyethyl Cellulose through a Green Method for Efficient Oil Removal

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A novel strategy for fabricating robust superhydrophobic fabrics by environmentally-friendly enzyme etching

Cited by 195 publications

References 49 publications

Development of Organosilicon-Based Superhydrophobic Coatings through Atmospheric Pressure Plasma Polymerization of HMDSO in Nitrogen Plasma

Development of Organosilicon-Based Superhydrophobic Coatings through Atmospheric Pressure Plasma Polymerization of HMDSO in Nitrogen Plasma

CPO‐Fe3O4@mTiO2 nanocomposite with integrated magnetic separation and enzymatic and photocatalytic activities in efficient degradation of organic contaminants in wastewater

In-Situ Synthesis of Hydrophobic Polyurethane Ternary Composite Induced by Hydroxyethyl Cellulose through a Green Method for Efficient Oil Removal

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Product

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CPO‐Fe₃O₄@mTiO₂ nanocomposite with integrated magnetic separation and enzymatic and photocatalytic activities in efficient degradation of organic contaminants in wastewater