Improving oleophobicity and hydrophilicity of superhydrophobic surface by TiO<sub>2</sub>-based coatings

Hosseini, Marzieh Sadat; Sadeghi, Mohammad Taghi; Khazaei, Masoud

doi:10.1088/2053-1591/aad2b8

Cited by 11 publications

(3 citation statements)

References 77 publications

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“…These modifications presumably influence the affinity to chemisorbed water of their surrounding sites and lead to the formation of hydrophilic domains. [47][48][49] Moreover, in Figure 9c, the intensity of the carbonyl and carboxyl-like peaks at 288.3 and 289.1 eV changes with the applied voltage, which is consistent with the change from hydrophobic to hydrophilic behaviors of the nanocomposites. [50][51][52] Beyond 5.2 kV, the surface becomes more hydrophilic, whereas the surface roughness continues to increase, which no more contradicts the Wenzel model.…”

Section: Wetting Properties Of Deposited Tio 2 @C Filmssupporting

confidence: 72%

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO₂@carbon nanostructure

Matouk

Torriss

Rincón

et al. 2020

Plasma Processes & Polymers

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A one‐step technique for the deposition of superhydrophilic TiO2@carbon nanocomposites is described in this study. The nanocomposites are synthesized by injecting TiO2 nanoparticles suspended in isopropanol into a dielectric barrier discharge operating at atmospheric pressure (AP‐DBD) generated in an N2/N2O gas mixture. The influence of the voltage (3–8 kV) applied to a 2‐kHz‐operated AP‐DBD on the wettability of the as‐deposited TiO2@C nanocomposites is examined. The water contact angle is drastically reduced from 93° for the reference TiO2 powder to <5° for the deposited nanocomposite. This superhydrophilicity is not caused by the increase of the surface roughness determined by atomic force microscopy measurement but rather by the higher density of graphitic compounds at the surface, as confirmed by X‐ray photoelectron spectroscopy measurements.

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Section: Wetting Properties Of Deposited Tio 2 @C Filmssupporting

confidence: 72%

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO₂@carbon nanostructure

Matouk

Torriss

Rincón

et al. 2020

Plasma Processes & Polymers

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“…But the main challenge of the application of nanofluids for enhanced oil recovery in carbonate reservoirs is maintaining their stability under extreme conditions of high temperature and salinity [7]. In these conditions, nanoparticles may aggregate and plug pores that will result in permeability reduction and poor productivity [8]. These challenges are even more important in carbonate reservoirs because of their high salinity and multiplex porous system [6].…”

Section: Introductionmentioning

confidence: 99%

Improving the stability of nanofluids via surface-modified titanium dioxide nanoparticles for wettability alteration of oil-wet carbonate reservoirs

Hosseini

Khazaei

Misaghi³

et al. 2022

Mater. Res. Express

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The main challenge of the application of nanofluids for enhanced oil recovery (EOR) in oil-wet carbonate reservoirs is maintaining their stability under high-temperature and high-salinity which is normally seen in reservoir conditions. In this work, surface-modified TiO2 nanoparticles were synthesized by N-(2-Aminoethyl)-3-Aminopropyltrimethoxysilane (AEAPTMS) as a coupling agent for surface modification of nanoparticles. Zeta potential and dynamic light scattering analyses were used to evaluate the stability of the prepared nanofluids. Results indicated that nanofluids had high stability in 90 °C and 20 wt.% salinity. The influence of nanofluids on wettability alteration of carbonate rocks was studied by measuring the contact angle value. Untreated rock samples were strongly oil-wet, with water advancing and receding contact angles of 165.1° and 166.2°, respectively. After treatment with 3wt.% concentration of surface-modified TiO2 nanoparticles, the rock plate wettability changed to a water-wet state, with water advancing and receding contact angles of 37.6° and 48.2°, respectively. Suggested surface-modified TiO2 nanoparticles were more effective in wettability alteration of the rock surfaces compared to the un-modified TiO2 nanoparticles. Furthermore, higher concentration of nanoparticles, higher the ability of the nanoparticles on changing the rock wettability.

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“…TiO 2 is one of the most studied nanomaterials for membrane modifications [15] due to its availability, notable physical and chemical properties, and antifouling potential [16]. The properties of TiO 2 can be further enhanced through metal-ion doping to improve the hydrophilicity of the nanoparticles [17]. Most of the polymeric hollow fiber membrane immobilized with nanoparticles belong to mixed matrix nanocomposite membrane where the inorganic nanoparticles are randomly distributed throughout the polymer matrix [18,19].…”

Section: Introductionmentioning

confidence: 99%

ZrO2-TiO2 Incorporated PVDF Dual-Layer Hollow Fiber Membrane for Oily Wastewater Treatment: Effect of Air Gap

et al. 2020

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Dual-layer hollow fiber (DLHF) nanocomposite membrane prepared by co-extrusion technique allows a uniform distribution of nanoparticles within the membrane outer layer to enhance the membrane performance. The effects of spinning parameters especially the air gap on the physico-chemical properties of ZrO2-TiO2 nanoparticles incorporated PVDF DLHF membranes for oily wastewater treatment have been investigated in this study. The zeta potential of the nanoparticles was measured to be around –16.5 mV. FESEM–EDX verified the uniform distribution of Ti, Zr, and O elements throughout the nanoparticle sample and the TEM images showed an average nanoparticles grain size of ~12 nm. Meanwhile, the size distribution intensity was around 716 nm. A lower air gap was found to suppress the macrovoid growth which resulted in the formation of thin outer layer incorporated with nanoparticles. The improvement in the separation performance of PVDF DLHF membranes embedded with ZrO2-TiO2 nanoparticles by about 5.7% in comparison to the neat membrane disclosed that the incorporation of ZrO2-TiO2 nanoparticles make them potentially useful for oily wastewater treatment.

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Improving oleophobicity and hydrophilicity of superhydrophobic surface by TiO₂-based coatings

Cited by 11 publications

References 77 publications

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO₂@carbon nanostructure

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO₂@carbon nanostructure

Improving the stability of nanofluids via surface-modified titanium dioxide nanoparticles for wettability alteration of oil-wet carbonate reservoirs

ZrO2-TiO2 Incorporated PVDF Dual-Layer Hollow Fiber Membrane for Oily Wastewater Treatment: Effect of Air Gap

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Improving oleophobicity and hydrophilicity of superhydrophobic surface by TiO2-based coatings

Cited by 11 publications

References 77 publications

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO2@carbon nanostructure

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO2@carbon nanostructure

Improving the stability of nanofluids via surface-modified titanium dioxide nanoparticles for wettability alteration of oil-wet carbonate reservoirs

ZrO2-TiO2 Incorporated PVDF Dual-Layer Hollow Fiber Membrane for Oily Wastewater Treatment: Effect of Air Gap

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Improving oleophobicity and hydrophilicity of superhydrophobic surface by TiO₂-based coatings

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO₂@carbon nanostructure

Atmospheric plasma dielectric barrier discharge: A simple route to produce superhydrophilic TiO₂@carbon nanostructure