Facile method to prepare stable superhydrophobic Co3O4 surface

Yuan, Zhiqing; Chen, Hong; Li, Chao; Huang, Lianghui; Fu, Xilin; Zhao, Dongyuan; Tang, Jianxin

doi:10.1016/j.apsusc.2009.07.073

Cited by 20 publications

(8 citation statements)

References 53 publications

(68 reference statements)

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“…The use of long‐chain molecules is a well‐defined method for lowering surface energy 65. An example of this is a synthesis that involves the application of a long‐chain carboxylic acid to Co 3 O 4 nanoscale powders that have been modified by using steric acid, giving a surface with a water contact angle of 155° 66…”

Section: Methods For Hydrophobic Surface Fabricationmentioning

confidence: 99%

“…[65] An example of this is a synthesis that involves the application of a long-chain carboxylic acid to Co 3 O 4 nanoscale powders that have been modified by using steric acid, giving a surface with a water contact angle of 1558. [66] Carbon nanotubes: Carbon nanotubes [67] can be grown in a variety of ways, which gives rise to many structures [68] ( Figure 28). The rod-shaped structures can be arranged to provide a high surface roughness, [69] which is achieved by ar-ranging the carbon nanotubes into "nanoforests".…”

Section: Wwwchemeurjorgmentioning

confidence: 99%

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Preparation and Characterisation of Super‐Hydrophobic Surfaces

Crick

Parkin

2010

Chemistry A European J

275

171

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The interest in highly water-repellent surfaces has grown in recent years due to the desire for self-cleaning surfaces. A super-hydrophobic surface is one that achieves a water contact angle of 150 degrees or greater. This article explores the different approaches used to construct super-hydrophobic surfaces and identifies the key properties of each surface that contribute to its hydrophobicity. The models used to describe surface interaction with water are considered, with attention directed to the methods of contact angle analysis. A summary describing the different routes to hydrophobicity is also given.

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Section: Methods For Hydrophobic Surface Fabricationmentioning

confidence: 99%

Section: Wwwchemeurjorgmentioning

confidence: 99%

Preparation and Characterisation of Super‐Hydrophobic Surfaces

Crick

Parkin

2010

Chemistry A European J

275

171

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“…7 Water on a superhydrophobic surface usually beads up and drips off rapidly while washing away powder-like contaminants. 8,9 This phenomenon renders materials with superhydrophobic surfaces a self-cleaning property. The self-cleaning property and the limited contact areas between the solids and the water droplets make the superhydrophobic surfaces preferable for many industrial and biological applications, such as antibiofouling paints for boats, 10 snow-repelling for antennas and windows, 11 self-cleaning windshields for automobiles, 12 reduction of frictional drag on ship hulls, 13 microfluidics, 14 and stain resistant textiles.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a superamphiphobic surface on a common cast iron substrate

et al. 2011

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A superamphiphobic (super-repellent) surface with both water and rapeseed oil contact angle higher than 150°was prepared on a common cast iron substrate. The water and rapeseed oil contact angles were 158 ± 1.9°and 151 ± 1.7°, respectively. The sliding angles of water and rapeseed oil on the superamphiphobic surface were 2°and 16°, respectively. Scanning electron microscope images showed that many interesting microflower-like microstructures comprised many nanorods with the average diameter of about 200 nm, which were distributed on the superamphiphobic cast iron substrate. Each nanorod was composed of many smaller nanostructures and nano particles, which created interesting micro-nano binary structures similar to the surface microstructures of lotus leaves. When kept in an ambient environment for 6 months, no rust was observed on the superamphiphobic cast iron substrate surface, which showed excellent corrosion resistance.

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“…Achieving extreme surface wettability scenarios, including superhydrophobicity and superhydrophilicity, has great significance for various industrial and biomedical applications [39]. There are two main methods for fabrication of surfaces with extreme wettabilities: one method is by depositing hydrophilic or hydrophobic coatings onto the substrate, which includes crystal growth [40,41] and electrochemical processing [42], and the other method directly creates microstructures on the substrate, which includes photolithography [43], micromachining [44], laser surface texturing [45,46] and so forth [47].…”

Section: Introductionmentioning

confidence: 99%

Laser Texturing for Superwetting Titanium Alloy and Investigation of Its Erosion Resistance

et al. 2021

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Erosion of materials is one of the major causes that lead to the malfunction of equipment and facilities, and surface texturing can be a solution for enhancement of erosion resistance. In this work, superwetting (superhydrophilic/superhydrophobic) titanium (Ti) alloy surface with periodic microstructure was prepared by a facile laser-based surface texturing approach which combines laser surface texturing and low-temperature annealing. The effect of laser-induced surface texture and wettability on the erosion resistance of the laser textured surface was studied. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to analyze the chemical surface microstructure and surface on the untreated and laser textured surfaces. The hardness and contact angle of the untreated surface, superhydrophilic surface and superhydrophobic surface were measured by microhardness tester and contact angle goniometer. Using an in-house built erosion experimental setup, the erosion resistance of the untreated surface, superhydrophilic surface and superhydrophobic surface was investigated. The experimental results demonstrate that micro-bumps are formed after laser surface texturing. In the meantime, the surface hardness for the laser textured surface with a step size of 150 μm is increased by 48% under the load of 1.961 N. Compared with the untreated surface, the erosion resistance is increased by 33.9%, 23.8% and 16.1%, respectively, for the superhydrophobic surface. The SEM results show that the untreated surface has large and deep impact pits, while the superhydrophobic surface only has small and shallow impact pits, indicating that the erosion process resulted in less damage to the substrate. The EDS results shows that superhydrophobicity plays a critical role in protecting the substrate from erosion. It is thus believed that the superhydrophobic surface has pronounced effects for improving the hardness and erosion resistance of Ti alloy.

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Facile method to prepare stable superhydrophobic Co3O4 surface

Cited by 20 publications

References 53 publications

Preparation and Characterisation of Super‐Hydrophobic Surfaces

Preparation and Characterisation of Super‐Hydrophobic Surfaces

Preparation of a superamphiphobic surface on a common cast iron substrate

Laser Texturing for Superwetting Titanium Alloy and Investigation of Its Erosion Resistance

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