New insight into island-like structure driven from hydroxyl groups for high-performance superhydrophobic surfaces

Deng, Songlin; Jia, Shanshan; Deng, Xunhe; Qing, Yan; Luo, Sha

doi:10.1016/j.cej.2021.129078

Cited by 16 publications

(9 citation statements)

References 54 publications

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“…(6) (7) According to previous research, eq 6 can be changed to eq 7 with the modification of the fractal formula. 41 Among the parameters of eq 7, (H/h) D−2 is the surficial roughness factor, H can be defined as the scale of microstructure, and h is also defined as the scale of nanostructure (the size of an individual nanoparticle). The fractal dimension D is 2.2618 because this surface condition is in a three-dimensional space.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Mechanistic studies have revealed that the −OH group on the surface of the crystalline metal substrate can influence the growth of nanoparticles during the thermally driven process, which in turn optimizes the surface structure of SHS. 41 However, unlike crystalline metals, amorphous alloys have a higher reactivity due to their metastable structure. After the activation treatment, electrons around randomly disordered atoms are more readily activated by weak atomic bonds, which leads to more efficient electron transfer and higher −OH production capacity.…”

Section: ■ Introductionmentioning

confidence: 99%

“…). − Impressively, the SHS with multiscale roughness and favorable bond strength were fabricated by a thermally driven method. Mechanistic studies have revealed that the −OH group on the surface of the crystalline metal substrate can influence the growth of nanoparticles during the thermally driven process, which in turn optimizes the surface structure of SHS . However, unlike crystalline metals, amorphous alloys have a higher reactivity due to their metastable structure.…”

Section: Introductionmentioning

confidence: 99%

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Chemical Etching, Thermally Driven Combination Strategy to Fabricate Superhydrophobic Fe-Based Amorphous Coatings with Excellent Anticorrosion Property: Based on Hydroxylation Effect

Ma,

Wang,

Tong

et al. 2023

Langmuir

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Fe-based amorphous coatings are ideal materials for surface protection due to their outstanding mechanical properties and corrosion resistance. However, coating defects are inevitably formed during the preparation of coatings by thermal spray technology, which seriously affects the corrosion performance. Inspired by bionics, conceiving superhydrophobic surfaces with liquid barrier properties has become a new idea for the corrosion protection of metal surfaces. In this work, based on surface hydroxylation, we designed a superhydrophobic Fe-based amorphous coating with corrosion resistance by chemical etching combined with a thermally driven preparation strategy. The obtained superhydrophobic coatings exhibit liquid repellency (contact angle >150°) and excellent corrosion resistance (corrosion current density and passive current density reduced by 3 orders of magnitude). The results revealed that the superhydrophobic behavior stems from the construction of hydroxyl-induced surface micro-/nanomultilevel aggregates (cluster structures). The hydrophobic agent layer deposited on the surface of cluster aggregates and the nanoparticle elements that constitute the clusters dominate the corrosion resistance of the coating. This work provides an effective guide to the design of high-corrosion-resistant Fe-based amorphous alloy coatings and promotes their engineering applications.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Chemical Etching, Thermally Driven Combination Strategy to Fabricate Superhydrophobic Fe-Based Amorphous Coatings with Excellent Anticorrosion Property: Based on Hydroxylation Effect

Ma,

Wang,

Tong

et al. 2023

Langmuir

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“…A surface with a WCA greater than 150° and a sliding angle (SA) less than 10° is a superhydrophobic surface [ 13 , 14 , 15 ]. In recent years, superhydrophobic surfaces have attracted attention due to their many excellent properties, such as anti-icing [ 16 , 17 ], anti-fogging [ 18 , 19 ], anti-corrosion [ 20 ], self-cleaning [ 19 , 21 ], drag-reduction, and oil/water separation properties [ 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Fluorine-Free, Anti-Icing, and Multifunctional Superhydrophobic Surface on Wood Substrates

et al. 2022

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Building superhydrophobic protective layers on the wood substrates is promising in terms of endowing them with multiple functions, including water-repellent, self-cleaning, anti-icing functions. In this study, multifunctional superhydrophobic wood was successfully fabricated by introducing SiO2 sol and superhydrophobic powder (PMHOS). The SiO2 sol was prepared using tetraethoxysilane as a precursor and ethanol was used as the dispersant. The PMHOS was synthesized using poly(methylhydrogen)siloxane (PMHS) and ethanol. As a result, the obtained superhydrophobic wood had a water contact angle (WCA) of 156° and a sliding angle (SA) of 6° at room temperature. The obtained superhydrophobic wood exhibited excellent repellency toward common liquid (milk, soy sauce, juice, and coffee). The superhydrophobic layer on the wood surface also exhibited good durability after a series of mechanical damages, including finger wiping, tape peeling, knife scratching, and sandpaper abrasion. In addition, the obtained superhydrophobic wood showed excellent anti-icing properties.

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“…This micro–nano secondary hierarchy provides inspiration for the design of superhydrophobic surfaces. Inspired by the lotus leaf effect, 11,12 various structures mimicking the hierarchical morphology have been established when fabricating superhydrophobic surfaces, such as island-like structured nanoparticles, 13,14 binary colloidal particles, 15–17 micro/nano-structured fibers, 18,19 flower-like hierarchical structures, 20,21 tetrapod structures, 22 desert beetle-like structures, 23 etc .…”

Section: Introductionmentioning

confidence: 99%

Aqueous construction of raspberry-like ZIF-8 hierarchical structures with enhanced superhydrophobic performance

Wang

Xie

et al. 2022

Nanoscale

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New insight into island-like structure driven from hydroxyl groups for high-performance superhydrophobic surfaces

Cited by 16 publications

References 54 publications

Chemical Etching, Thermally Driven Combination Strategy to Fabricate Superhydrophobic Fe-Based Amorphous Coatings with Excellent Anticorrosion Property: Based on Hydroxylation Effect

Chemical Etching, Thermally Driven Combination Strategy to Fabricate Superhydrophobic Fe-Based Amorphous Coatings with Excellent Anticorrosion Property: Based on Hydroxylation Effect

Facile Fabrication of Fluorine-Free, Anti-Icing, and Multifunctional Superhydrophobic Surface on Wood Substrates

Aqueous construction of raspberry-like ZIF-8 hierarchical structures with enhanced superhydrophobic performance

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