Superhydrophobic TiO2 nanotube arrays with switchable adhesion in both air and oil

Yu, Xiaoyan; Lai, Hua; Wang, Ruijie; Zhang, Dongjie; Cheng, Zhongjun; Jiang, Lei

doi:10.1016/j.mtnano.2023.100375

Cited by 2 publications

(2 citation statements)

References 59 publications

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“…Fluoride-free agents mainly include paraffin, silicone, acrylic, and polyurethane. While stearic acid and stearamine superhydrophobic modification is mostly used in metals and is less commonly used in soft substrates such as fabrics . However, the micronano structure constructed surface roughness is prone to damage, leading to a loss of hydrophobic effectiveness.…”

Section: Introductionmentioning

confidence: 99%

“…While stearic acid and stearamine superhydrophobic modification is mostly used in metals and is less commonly used in soft substrates such as fabrics. 36 However, the micronano structure constructed surface roughness is prone to damage, leading to a loss of hydrophobic effectiveness. Improving the durability of superhydrophobic surfaces has always been a significant challenge.…”

Section: Introductionmentioning

confidence: 99%

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Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation

Chen,

Yang,

Feng

et al. 2024

ACS Appl. Nano Mater.

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The practical applications of superhydrophobic fabrics face challenges such as inadequate durability and dependence on toxic fluorine-containing reagents. In this work, a robust, multipurpose, and fluoride-free superhydrophobic fabric is engineered. The fabrication process involves the preparation of a petal-like nano-SiO 2 (PNS) using a two-phase layering approach. The pleated structure of PNS contributes to excellent roughness on the fabric surface, while the strong adhesion of polydopamine (PDA) serves as an intermediate layer, enhancing the durability and stability of the hydrophobic fabric. Additionally, the surface energy of cotton is reduced by polydimethylsiloxane (PDMS) coating. The resulting fabric coated with PDMS/PNS−PDA exhibits an exceptional water contact angle of 166.3°, a remarkably low sliding angle of only 3.6°, and excellent mechanical stability that can withstand 50 washing cycles and 30 Martindale abrasion cycles. Moreover, the superhydrophobic fabric demonstrates prominent antifouling and self-cleaning properties along with oil−water separation efficiency (>98%), water-in-oil emulsion (96%), and reusability for oil−water separation. Overall, the engineered superhydrophobic fabric shows promising potential in oil−water separation and the development of functional textiles.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation

Chen,

Yang,

Feng

et al. 2024

ACS Appl. Nano Mater.

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Preparation of an Organosilicon‐Modified Micro‐Nano Symbiotic Superhydrophobic Surface by a One‐Step Spray Method

Wang,

Sun,

Zhang

et al. 2024

Adv Materials Technologies

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Superhydrophobic surfaces' long‐term applications and environmentally friendly manufacturing processes are long popular but challenging research topics. In this work, three functionalized silane coupling agents (SCAs) are developed that possess both surface activity and coupling properties and are perfectly tailored to the manufacturing conditions of superhydrophobic surfaces. The SCAs containing polyether groups are produced on the basis of hydrosilylation without the use of fluorosilane. They are also employed for the in situ synthesis of low surface energy nano‐SiO2 solutions, which are then sprayed onto the surfaces of various substrates to create stable and wear‐resistant protective layers. This demonstrates the Cassie–Baxter wetting model. The polyether groups' chain length, morphology, and degree of polymerization allow for the free adjustment of the layers' superhydrophobicity. Methyl blue, ink, and glycerinum have contact angles (CAs) of 153.01°, 152.09°, and 150.02°, and the sliding angles (SAs) are 2°, 2°, and 4°, respectively. Furthermore, in tests of durability and corrosion resistance, the CAs typically stay above 150°, demonstrating superior superhydrophobicity capabilities. The large‐scale replication of the fluorine‐free production process of the superhydrophobic layers discussed in this work is crucial for the expansion of practical applications.

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Superhydrophobic TiO2 nanotube arrays with switchable adhesion in both air and oil

Cited by 2 publications

References 59 publications

Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation

Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation

Preparation of an Organosilicon‐Modified Micro‐Nano Symbiotic Superhydrophobic Surface by a One‐Step Spray Method

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Superhydrophobic TiO2 nanotube arrays with switchable adhesion in both air and oil

Cited by 2 publications

References 59 publications

Fluorine-Free Superhydrophobic Petal-like SiO2 Nanostructure Supported on Cotton for Oil–Water Separation

Fluorine-Free Superhydrophobic Petal-like SiO2 Nanostructure Supported on Cotton for Oil–Water Separation

Preparation of an Organosilicon‐Modified Micro‐Nano Symbiotic Superhydrophobic Surface by a One‐Step Spray Method

Contact Info

Product

Resources

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Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation

Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation