Facile fabrication of superhydrophobic sand: Potential advantages for practical application in oil–water separation

Men, Xuehu; Ge, Bo; Li, Peilong; Zhu, Xiaotao; Shi, Xiangchen; Zhang, Zhaozhu

doi:10.1016/j.jtice.2015.11.015

Cited by 45 publications

(16 citation statements)

References 34 publications

(29 reference statements)

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“…Increasing the wetting characteristics of sand or PU sponge for organic phases is an active challenge in materials science and is a requirement for them to be applicable in the petroleum industry. It has been previously reported that superhydrophobic sand with different degrees of wettability can be used in the separation of emulsions or treatment of contaminated water [ 41 ]. The fabrication of superhydrophobic porous materials based on the PU sponge has great potential for oil absorption owing to their good stability, high absorption capacity, and recyclability [ 42 ].…”

Section: Discussionmentioning

confidence: 99%

Novel Superhydrophobic Sand and Polyurethane Sponge Coated with Silica/Modified Asphaltene Nanoparticles for Rapid Oil Spill Cleanup

et al. 2019

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Superhydrophobic nanomaterials are promising in the important pursuit to alleviate the environmental pollution caused by the petroleum crude oil industry, especially to clean-up oil spills. In this work, asphaltenes isolated from crude oil were modified to act as capping agents during the synthesis of hydrophobic silica nanoparticles (HSNPs). The chemical structure, surface morphology, particle size, and surfaces charge of HSNPs were investigated. The contact angles of water droplets on HSNP film surfaces were measured to investigate their wetting properties. Finally, superhydrophobic sand and polyurethane sponge were prepared by coating them with HSNPs and applied in the cleanup of oil spills of viscous heavy Arabian crude oil.

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Section: Discussionmentioning

confidence: 99%

Novel Superhydrophobic Sand and Polyurethane Sponge Coated with Silica/Modified Asphaltene Nanoparticles for Rapid Oil Spill Cleanup

et al. 2019

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“…Furthermore, scientists also developed superhydrophobic sand for civil engineering and other applications. Men et al fabricated superhydrophobic sand by adding octadecyltrichlorosilane into the preparation solution [119]. These sands demonstrated a WCA of 154.8 ± 1 • and an SA of 4.5 ± 0.9 • , which can be used for oil/water separation.…”

Section: Stone and Sandmentioning

confidence: 99%

Superhydrophobic Civil Engineering Materials: A Review from Recent Developments

Xiang

Fang

et al. 2019

Coatings

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Superhydrophobic surfaces have drawn attention from scientists and engineers because of their extreme water repellency. More interestingly, these surfaces have also demonstrated an infinite influence on civil engineering materials. In this feature article, the history of wettability theory is described firstly. The approaches to construct hierarchical micro/nanostructures such as chemical vapor deposition (CVD), electrochemical, etching, and flame synthesis methods are introduced. Then, the advantages and limitations of each method are discussed. Furthermore, the recent progress of superhydrophobicity applied on civil engineering materials and its applications are summarized. Finally, the obstacles and prospects of superhydrophobic civil engineering materials are stated and expected. This review should be of interest to scientists and civil engineers who are interested in superhydrophobic surfaces and novel civil engineering materials.

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“…Men X.H. et al [ 11 ] used octadecyltrichlorosilane to hydrophobically modify sand. Due to the extremely fine particle size of the sand used, it exhibited superhydrophobic properties, but the scholars mainly applied it in the field of oil–water separation.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory

Zhang

Ren

2021

Materials

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Land desertification, a severe global ecological and environmental problem, brings challenges to the sustainable utilization of land resources in the world. The purpose of this research is to use hydrophobic theory to prepare impervious and breathable sand, and to solve the problems of sandy soil that seeps easily and makes it difficult for vegetation to survive in desertified areas. The influences of coating material content, first-level and second-level rough structure on the impermeability and air permeability of impervious and breathable sand were studied. The research showed that, with the increase in coating material content, the impervious performance of the sample increased firstly and then decreased, and the air permeability rose continuously. The hydrostatic pressure resistance of the sample can reach an extreme value of 53 mm. The first-level rough structure of micron structure can greatly improve the hydrophobic performance, thus improving the impervious performance. The addition of micron calcium carbonate would improve the hydrostatic pressure resistance height of the sample to 190 mm. The sample would reach a superhydrophobic state in the condition of a first-level rough structure of a nano structure built by nano silica, and the contact angle was up to 152.0°, so that the hydrostatic pressure resistance height can rise to 205 mm. The best performance would be achieved under the condition of relatively less raw material with a second-level rough structure of micro–nano. At this point, the contact angle of the sample reached 152.8° and the hydrostatic pressure resistance height was up to 205 mm. At the same time, the air permeability index of the above four kinds of impervious and breathable sand met all planting requirements. The sample prepared can satisfy the demands of different degrees of impermeability and air permeability, and can be widely used in desertification control.

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Facile fabrication of superhydrophobic sand: Potential advantages for practical application in oil–water separation

Cited by 45 publications

References 34 publications

Novel Superhydrophobic Sand and Polyurethane Sponge Coated with Silica/Modified Asphaltene Nanoparticles for Rapid Oil Spill Cleanup

Novel Superhydrophobic Sand and Polyurethane Sponge Coated with Silica/Modified Asphaltene Nanoparticles for Rapid Oil Spill Cleanup

Superhydrophobic Civil Engineering Materials: A Review from Recent Developments

Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory

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