Facile and scalable fabrication of superhydrophobic and superoleophilic PDMS-co-PMHS coating on porous substrates for highly effective oil/water separation

Li, Xipeng; Cao, Min; Shan, Huiting; Tezel, F. Handan; Li, Bao-An

doi:10.1016/j.cej.2018.10.097

Cited by 120 publications

(33 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are other examples where this combination of properties has been used to engineer materials for oil/water separation (Zhu et al, 2017 ; Ge et al, 2019 , 2020a ). A variety of nanomaterials have been used to create meshes (Jiang et al, 2017 ; Zhang et al, 2018a , 2019 ; Nanda et al, 2019 ; Wang et al, 2019 ; Gong et al, 2020 ), membranes (Attia et al, 2018 ; Huang et al, 2018 ; Ma et al, 2018 ; Qing et al, 2018 ; Zhao et al, 2018 ; Subramanian et al, 2019 ; Cheng et al, 2020 ), sponges (Huang et al, 2019b ; Li et al, 2019b ), and fabrics (Cheng et al, 2018 ; Chauhan et al, 2019 ; Lin et al, 2019 ; Zhou et al, 2019 ; Dan et al, 2020 ) with superhydrophobic and superoleophilic properties for oil/water separation (Ferrero et al, 2019 ; Zulfiqar et al, 2019 ; Latthe et al, 2020 ; Lin et al, 2020 ; Topuz et al, 2020 ; Zhang et al, 2020b ). Most of these materials separate oil either by filtration, absorption, or both.…”

Section: Separation Of Oil/water Mixturesmentioning

confidence: 99%

Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures

et al. 2020

View full text Add to dashboard Cite

Oil/water mixtures are a potentially major source of environmental pollution if efficient separation technology is not employed during processing. A large volume of oil/water mixtures is produced via many manufacturing operations in food, petrochemical, mining, and metal industries and can be exposed to water sources on a regular basis. To date, several techniques are used in practice to deal with industrial oil/water mixtures and oil spills such as in situ burning of oil, bioremediation, and solidifiers, which change the physical shape of oil as a result of chemical interaction. Physical separation of oil/water mixtures is in industrial practice; however, the existing technologies to do so often require either dissipation of large amounts of energy (such as in cyclones and hydrocyclones) or large residence times or inventories of fluids (such as in decanters). Recently, materials with selective wettability have gained attention for application in separation of oil/water mixtures and surfactant stabilized emulsions. For example, a superhydrophobic material is selectively wettable toward oil while having a poor affinity for the aqueous phase; therefore, a superhydrophobic porous material can easily adsorb the oil while completely rejecting the water from an oil/water mixture, thus physically separating the two components. The ease of separation, low cost, and low-energy requirements are some of the other advantages offered by these materials over existing practices of oil/water separation. The present review aims to focus on the surface engineering aspects to achieve selectively wettability in materials and its their relationship with the separation of oil/water mixtures with particular focus on emulsions, on factors contributing to their stability, and on how wettability can be helpful in their separation. Finally, the challenges in application of superwettable materials will be highlighted, and potential solutions to improve the application of these materials will be put forward.

show abstract

Section: Separation Of Oil/water Mixturesmentioning

confidence: 99%

Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures

et al. 2020

View full text Add to dashboard Cite

show abstract

“…[1,2] The discharge of oily wastewater not only results in the waste of petroleum resources, but also is responsible for serious pollution to water sources and soil, as well as leading to the death of living organisms because of the lack of oxygen in the water. [3,4] Therefore, how to effectively treat oily waste water, to achieve water reuse and oil recovery, and to protect the environment have received increasing attention from the state and the society. [5,6] Traditional technologies, such as gravity separation [7], skimming [8], sorption [9,10], and flotation [11] are beneficial for the separation of oil/water mixtures but they afflict with low efficiency and high operation cost.…”

Section: Introductionmentioning

confidence: 99%

“…The permeate flux was also determined by calculating the oil phase volume permeating the unit coated mesh area per unit time according to Eq. (3) [3,21]. is the permeate flux of the coated mesh, mL•m -2 •s -1 ; m is the oil mass penetrating the coated mesh measured with a multifunctional electronic balance (AL 104, METTLER Dolly Instruments (Shanghai) Co., Ltd.) during the oil/water separating tests, g; ρ is the density of the oil, g • mL -1 ; S is the effective area of the coated mesh for oil passing, m 2 ; and t is the permeation time, s.…”

mentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

“…In addition, PDMS also is a good candidate to fabricate SHPB-SHOI materials based on its inherent hydrophobic/ oleophilic property, low cost, mechanical flexibility, high thermal stability, chemical resistance, and excellent film-forming performance. [11,17,31,32] The obtained PDMS-VMT-Fe 3 O 4 @dPU sponge exhibited outstanding properties of fire-retarding, magnetic-responsive, longtime superhydrophobic stability, and high oil absorption capacity, which ensure that this promising sponge can be applied to handle oil spillage accidents and oily wastewater.…”

Section: Introductionmentioning

confidence: 99%

One‐step fabrication of superhydrophobic sponge with magnetic controllable and flame‐retardancy for oil removing and collecting

Liang

Liu

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

Water pollution arising from oil spillage and chemical leakage has emerged as a critical problem imposing threat to the human and animal health. Effective removal of oils and chemical from water has become a global challenge. Recently, superhydrophobic/superoleophilic magnetic controllable (SHPB‐SOPI‐MC) porous materials have attracted more attention in the field of oil‐removing because of the high selectivity, large absorption capacity, easy collection, and ideal recyclability. Moreover, in order to keep safety, the fire proofing performance should be taken into consideration. Therefore, fabricating SHPB‐SOPI‐MC porous materials with flame‐retardancy through a low cost and simple strategy is necessary but also challenging. In this work, an ultrasound‐assisted dip‐coating method was applied to fabricate polydimethylsiloxane‐vermiculite‐Fe3O4 (PDMS‐VMT‐Fe3O4) coating onto discarded polyurethane (d‐PU) sponge, which exhibited superhydrophobic, superoleophilic, magnetic controllable, and flame‐resistant properties. The PDMS‐VMT‐Fe3O4@d‐PU sponge owned excellent mechanical durability, chemical stability, and long‐term storage stability. Importantly, the PDMS‐VMT‐Fe3O4@d‐PU sponge instantly adsorbed oil floating on water under magnetic field driving. Furthermore, PDMS‐VMT‐Fe3O4@d‐PU sponge absorbed various oils and chemical with ideal selectivity, absorption capacity (up to 40 times of its own weight), speed, and recyclability (exceeding 100 cycles). These findings suggested that PDMS‐VMT‐Fe3O4@d‐PU sponge was a promising oil‐removing material for practical application of oil spills cleanup.

show abstract

Facile and scalable fabrication of superhydrophobic and superoleophilic PDMS-co-PMHS coating on porous substrates for highly effective oil/water separation

Cited by 120 publications

References 61 publications

Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures

Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures

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

One‐step fabrication of superhydrophobic sponge with magnetic controllable and flame‐retardancy for oil removing and collecting

Contact Info

Product

Resources

About