Synthesis of hierarchical superhydrophobic zinc oxide nano-structures for oil/water separation

Velayi, Elmira; Norouzbeigi, Reza

doi:10.1016/j.ceramint.2018.05.023

Cited by 53 publications

(18 citation statements)

References 64 publications

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“…The different separation efficiency and the permeate flux of the five meshes might be ascribed to their different mesh sizes because of the different thickness of the TiO2 coating layers with different deposition time [40]. Furthermore, the permeate fluxes of the as-prepared hydrophobic HDTMS-TiO2 coating meshes were comparable with the published resultsobtained from the superhydrophobic coating meshes[65][66][67].…”

supporting

confidence: 57%

Fluorine-free and hydrophobic hexadecyltrimethoxysilane-TiO2 coated mesh for gravity-driven oil/water separation

Cai

Zhao

Quan

et al. 2020

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Superhydrophobic and superoleophilic meshes have attracted great attention in oil/water separating application. However, superhydrophobic surfaces are not only complicated in preparation but also easy to break in practical applications. In this paper, we prepared fluorine-free hydrophobic hexadecyltrimethoxysilane (HDTMS)-TiO2 coated meshes with properties of cost-effectiveness, easy to manufacture, and high separation efficiency by a liquid phase deposition method. The surface topography, composition, and functional groups of the meshes were characterized by field emission scanning electron microscope (FE-SEM), energy dispersive X-ray spectroscopy (EDS), Xray photoelectron spectroscopy (XPS), and Fourier transform microscopic infrared spectrometer (FT-IR) spectrum, respectively. A new gravity-driven oil/water separator was designed for the separation experiments. The separation efficiency of the hydrophobic HDTMS-TiO2 coated meshes maintained over 97.8% after 35 separating cycles. This study indicated that the superhydrophobicity of the separating mesh was nonessential for the highly efficient oil-water separation. The fluorine-free hydrophobic HDTMS-TiO2 coated meshes provided an economical and beneficial solution to treat 2 industrial oily wastewater mixtures and environmental oil spills.

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supporting

confidence: 57%

Fluorine-free and hydrophobic hexadecyltrimethoxysilane-TiO2 coated mesh for gravity-driven oil/water separation

Cai

Zhao

Quan

et al. 2020

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Superhydrophobic surfaces are described as surfaces having contact angles larger than 150 0 with water and play significant roles in many scientific and industrial areas, such as, self-cleaning surfaces, [1][2][3][4] anti-ice surfaces, [5][6][7] anticorrosion, 8,9 oil-water separation, 10,11 and so on. Various approaches have been utilized to produce superhydrophobic surfaces containing plasma etching, 12 chemical vapor deposition, 13 electrospinning, 14,15 phase separation, 16,17 and so on.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces

Doğancı

2020

J of Applied Polymer Sci

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A superhydrophobic cyclic olefin copolymer (COC) nanocomposite coating was produced with a very simple and easy method. Self-cleaning superhydrophobic COC surfaces were obtained by only adding surface hydrophobized SiO 2 nanoparticles by dip coating method. The influence of concentration of SiO 2 and the coating temperatures on the wettability of the surfaces were investigated. The surface wettability of the coatings was examined with the contact angle measurements and the surface roughness and morphology were analyzed by using atomic force microscope and scanning electron microscopy analysis. Surfaces with certain amounts of COC and SiO 2 showed superhydrophobic character with high water contact angle of 169 0. Also, the obtained superhydrophobic surfaces show superior water repellent, high transparency, and self-cleaning characteristics.

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“…On the other hand, ZnO can be easily etched in acids and alkali [ 11 ]. This feature is commonly used to produce ZnO in form of nanosheeds, nanoshells, multipods, nanorods or nanowires typicaly implemented as periodic structures using a number of methods [ 2 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Optical Properties of E-Beam Evaporated Zinc Oxide Films—Effects of Decomposition and Surface Desorption

et al. 2020

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Zinc oxide films have been fabricated by the electron beam physical vapour deposition (PVD) technique. The effect of substrate temperature during fabrication and annealing temperature (carried out in ultra high vacuum conditions) has been investigated by means of atomic force microscopy, scanning electron microscopy, powder X-ray diffraction, X-ray photoelectron spectroscopy and spectroscopic ellipsometry. It was found that the layer deposited at room temperature is composed of Zn and ZnO crystallites with a number of orientations, whereas those grown at 100 and 200 ∘C consist of ZnO grains and exhibit privileged growth direction. Presented results clearly show the influence of ZnO decomposition and segregation of Zn atoms during evaporation and post-deposition annealing on microstructure and optical properties of zinc oxide films.

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Synthesis of hierarchical superhydrophobic zinc oxide nano-structures for oil/water separation

Cited by 53 publications

References 64 publications

Fluorine-free and hydrophobic hexadecyltrimethoxysilane-TiO2 coated mesh for gravity-driven oil/water separation

Fluorine-free and hydrophobic hexadecyltrimethoxysilane-TiO2 coated mesh for gravity-driven oil/water separation

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces

Microstructure and Optical Properties of E-Beam Evaporated Zinc Oxide Films—Effects of Decomposition and Surface Desorption

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Synthesis of hierarchical superhydrophobic zinc oxide nano-structures for oil/water separation

Cited by 53 publications

References 64 publications

Fluorine-free and hydrophobic hexadecyltrimethoxysilane-TiO2 coated mesh for gravity-driven oil/water separation

Fluorine-free and hydrophobic hexadecyltrimethoxysilane-TiO2 coated mesh for gravity-driven oil/water separation

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO2 nanocomposite surfaces

Microstructure and Optical Properties of E-Beam Evaporated Zinc Oxide Films—Effects of Decomposition and Surface Desorption

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Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO₂ nanocomposite surfaces