Biomimetic superhydrophobic films drop-coated with zinc oxide modified molecular sieves

Hu, Tengda; Wu, Yizhou; Zhao, Ning; Liu, Yuling; Zhou, Peng; Xu, Yachen; Xu, Tao; Qu, Wenshan; Wei, Bin; Liao, Yingjie

doi:10.1016/j.colsurfa.2022.128669

Cited by 9 publications

(6 citation statements)

References 50 publications

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“…Interestingly, it was evident from Figure a–c that the addition of HBPE had little effect on the instantaneous hydrophobicity of the membranes, all of the fibrous membranes exhibited excellent instantaneous WCA about 128°, which aided in splashing and fouling resistance capability . The difference was that the PAN/ZnO NP fibrous membranes maintained the hydrophobicity with WCA at 129° in 120 s due to the microstructures constructed via hydrophobic ZnO NPs . On the contrary, the fibrous membranes with HBPE as the sheath both exhibited wettability.…”

Section: Resultsmentioning

confidence: 99%

“…50 The difference was that the PAN/ ZnO NP fibrous membranes maintained the hydrophobicity with WCA at 129°in 120 s due to the microstructures constructed via hydrophobic ZnO NPs. 51 On the contrary, the fibrous membranes with HBPE as the sheath both exhibited wettability. With change in time, their WCA gradually decreased from 128°at 0 s to completely disappear at 120 s. The results of the cytotoxicity experiments indicate that PAN/HBPE/ZnO NPs (30%) fibrous membranes have qualified cell compatibility.…”

Section: Construction Of Core-sheathmentioning

confidence: 99%

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Nanofibers with an Adjustable Core-Sheath Structure Constructed from Hyperbranched Polyester for Efficient Loading of ZnO Nanoparticles

Min

Hou

Zhou

et al. 2023

ACS Appl. Nano Mater.

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Loading nanoparticles is a valuable way to construct functional fiber materials, yet the lack of homogeneity and easy agglomeration hinder its functional effect. Hyper-branched polyester (HBPE) has been identified as the ideal delivery vehicle for nanoparticles. Its application in nanofibers can be a promising approach to enhancing the loading efficiency. In this study, adjustable core-sheath structured polyacrylonitrile (PAN)/HBPE nanofibers were fabricated owing to the phase separation of two components during centrifugal spinning, and zinc oxide nanoparticles (ZnO NPs) were further introduced into the sheath. Scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, and so forth were utilized to characterize the morphology of the obtained nanofibers. Results indicated that the thickness of sheath in PAN/HBPE nanofibers could expand from 33.33 to 57.14% as the mass ratio of PAN/HBPE decreased from 8:2 to 5:5. Additionally, the ZnO NPs were encapsulated and dispersed by HBPE and successfully delivered to the sheath layer of the nanofibers. Therefore, the Zn content on the surface of PAN/HBPE/ZnO NP nanofibers can reach 17.86 wt % with only 6 wt % ZnO NPs doped, representing a 90% increase compared with HBPE-free nanofibers. Besides, the PAN/HBPE/ZnO NP nanofibers exhibited excellent air permeability and qualified biocompatibility, as well as outstanding functional release. The antibacterial rates against Escherichia coli and Staphylococcus aureus reached 96.62 ± 0.34 and 99.55 ± 0.78%, respectively. This facile processing strategy subtly combines the advantages of material and structure, providing insights to better achieve efficient loading of nanoparticles on nanofibers, enabling more researchers to customize functional materials.

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Section: Resultsmentioning

confidence: 99%

Section: Construction Of Core-sheathmentioning

confidence: 99%

Nanofibers with an Adjustable Core-Sheath Structure Constructed from Hyperbranched Polyester for Efficient Loading of ZnO Nanoparticles

Min

Hou

Zhou

et al. 2023

ACS Appl. Nano Mater.

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“…The superhydrophobic surface has a hierarchical structure, in which ZnO resembles the protruding nubs in a lotus leaf as a primary structure, and the SiO 2 nanoparticles attached to it can resemble the epidermal wax crystals in a lotus leaf. It was considered that the combination of the two-level hierarchical structures on the surface of SiO 2 -ZnO-MTMS stacked film, like the surface of lotus leaves, and the low surface energy MTMS substrate was the root cause of their superhydrophobicity [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

“…According to the published articles, superhydrophobic coatings of ZnO or MTMS have been widely reported. ZnO particles and molecular sieves are fused into PDMS films to prepare superhydrophobic coatings [ 41 ]. Branched hierarchical ZnO nanowires and ZnO nanowires were modified by MTMS, and the WCA of the coating was about 153 ± 3°.…”

Section: Introductionmentioning

confidence: 99%

Heat Stability and Icing Delay on Superhydrophobic Coatings in Facile One Step

2022

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Superhydrophobic coatings are limited to poor durability and a tedious preparation process. In this work, an efficient, eco-friendly, and cost-effective sol-gel method is developed for preparing superhydrophobic surfaces using an all-in-one suspension composed of methyltrimethoxysilane (MTMS), nano silicon dioxide (SiO2) particles, and micron zinc oxide (ZnO) particles. Superhydrophobic coatings with a contact angle (CA) up to 153.9° and a sliding angle (SA) of about 3.0° are prepared on Q235 steel substrates using MTMS 5 mL, 0.8 g of nano SiO2, and 0.2 g of micron ZnO. The morphology of the superhydrophobic coating is characterized by scanning electron microscopy (SEM), and the surface is covered with a micro- and nano-scaled hierarchical rough structure. A series of tests are conducted, including long-term stability tests and thermostability tests. The CAs are all above 150°, and the SAs are below 6.3°, indicating the excellent static stability of the prepared superhydrophobic coatings. Moreover, the CA of the superhydrophobic coating remains above 152° after 120 h of UV exposure, and the time for a water droplet to freeze on the surface of the superhydrophobic coating is 18 times of the bare Q235 steel, indicating that the superhydrophobic coating exhibits good resistance to UV radiation and icing-delay properties.

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“…When the contact angle between the water droplet and the coating surface is greater than 150°and the sliding angle is less than 10°, such a coating can be called a superhydrophobic coating. [6,7] Superhydrophobic surfaces have been wide-range applied because of their anti-fouling, [8][9][10] anti-icing, [11,12] selfhealing, [13,14] oil/water separation, [15,16] corrosion resistance [17,18] and so on. In these above obtained properties, people can pay more attention to protect the matrix from the impurity.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Superhydrophobic SiO₂ Coating with Anticorrosive Protection

et al. 2023

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In this work, the carbon steel matrix obtained a silane coupling agent (KH550) modified rough SiO2 coating, covering it by dip‐coating method. The modified SiO2 (K‐SiO2) coating on the carbon steel was coated with stearic acid (STA) and adjusted the proportion of SiO2 nanoparticles and KH550 to achieve the more perfect superhydrophobic sample. It turns out that SiO2 particles were evenly disturbuted and linked together by KH550 to form a stable structure. The K‐SiO2 coating liquid was further added a modifier of STA to achieve low surface energy, and then developed a durable and corrosion resistant coating. The superhydrophobic coating liquid was coated on the carbon steel to obtain a multifunctional superhydrophobic coating (contact angle=163°, rolling angle=1.4°), having excellent self‐cleaning, adhension, durability and corrosion resistance.

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Biomimetic superhydrophobic films drop-coated with zinc oxide modified molecular sieves

Cited by 9 publications

References 50 publications

Nanofibers with an Adjustable Core-Sheath Structure Constructed from Hyperbranched Polyester for Efficient Loading of ZnO Nanoparticles

Nanofibers with an Adjustable Core-Sheath Structure Constructed from Hyperbranched Polyester for Efficient Loading of ZnO Nanoparticles

Heat Stability and Icing Delay on Superhydrophobic Coatings in Facile One Step

Fabrication of a Superhydrophobic SiO₂ Coating with Anticorrosive Protection

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Biomimetic superhydrophobic films drop-coated with zinc oxide modified molecular sieves

Cited by 9 publications

References 50 publications

Nanofibers with an Adjustable Core-Sheath Structure Constructed from Hyperbranched Polyester for Efficient Loading of ZnO Nanoparticles

Nanofibers with an Adjustable Core-Sheath Structure Constructed from Hyperbranched Polyester for Efficient Loading of ZnO Nanoparticles

Heat Stability and Icing Delay on Superhydrophobic Coatings in Facile One Step

Fabrication of a Superhydrophobic SiO2 Coating with Anticorrosive Protection

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Fabrication of a Superhydrophobic SiO₂ Coating with Anticorrosive Protection