Ultralow concentration of molybdenum disulfide nanosheets for enhanced oil recovery

Raj, I. Loyola Poul; Qu, Ming; Xiao, Lizhi; Hou, Jirui; Li, Yongfeng; Liang, Tuo; Yang, Tong; Zhao, Mengdan

doi:10.1016/j.fuel.2019.04.078

Cited by 64 publications

(38 citation statements)

References 52 publications

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“…The other Raman peaks at 145 (J1), 228 (J2), and 332 (J3) cm −1 correspond to the formation of a superlattice or distortion on the basal plane of a single-layer MoS 2 nanosheet. 15,32,33 Therefore, the presence of above peaks proved that the as-synthesized MoS 2 nanosheets possess a metallic state (1T-structure).…”

Section: Resultsmentioning

confidence: 96%

Preparation and Interfacial Properties of Ultralow Concentrations of Amphiphilic Molybdenum Disulfide Nanosheets

Hou

Liang

et al. 2020

Ind. Eng. Chem. Res.

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Amphiphilic nanosheets have gained great attraction in diverse applications owing to their unprecedented performance. In this paper, amphiphilic molybdenum disulfide (CTAB−MoS 2 ) nanosheets were prepared through a one-step simple hydrothermal method, and the physicochemical properties were systematically investigated. The results showed that the CTAB−MoS 2 nanosheets displayed a distinct ultrathin flakelike structure and a lateral size in the range of 95 nm. More specifically, the presence of defect sites over the surfaces of MoS 2 nanosheets facilitated linkage with CTAB molecules, which made MoS 2 amphiphilic. Because of the amphiphilic nature, the CTAB− MoS 2 nanosheets could be steadily dispersed in water phase, reduce the oil−water interfacial tension, alter wettability of the solid surface, and stabilize emulsions at ultralow concentrations (50 mg/L). By observing and analyzing the interfacial behavior of CTAB−MoS 2 nanosheets in a simulated oil/brine system, it was found that CTAB−MoS 2 nanosheets could be adsorbed at the oil− water interface in the form of multilayer adsorption, and the adsorption layer (oil−water interfacial film) exhibited higher strength elasticity. This work provides a scalable method for preparing amphiphilic nanosheets and reveals the physicochemical properties of CTAB−MoS 2 amphiphilic nanosheets.

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Section: Resultsmentioning

confidence: 96%

Preparation and Interfacial Properties of Ultralow Concentrations of Amphiphilic Molybdenum Disulfide Nanosheets

Hou

Liang

et al. 2020

Ind. Eng. Chem. Res.

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“…Recently, using smart nanosheet materials in the field of EOR caught more attention due to their efficiency in reducing IFT and wettability alteration. Raj et al (2019) used 2D smart nanosheet with a concentration of 0.005% in brine salinity of 98,171 mg/L for EOR and proved the promising of 2D nanosheet in wettability alteration, which changed the wetting system from oil wet to strongly water wet and increased the oil recovery to 21.18% and 18.25% during tertiary flooding in 25 mD (Raj et al 2019). Also, Luo et al (2016) used graphene as nanosheet with a concentration of 0.005%-0.01%, and the recovery oil was about 15.2% through altering the wettability of the rock surface (Luo et al 2016).…”

Section: Review On Using Nanoparticles and Its Effect On Wettability mentioning

confidence: 99%

The effect of nanoparticles on reservoir wettability alteration: a critical review

2020

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A novel concept of treating oil reservoirs by nanofluids is being developed to improve oil recovery and reduce the trapped oil in hydrocarbon reservoirs. Nanoparticles show great potential in enhancing oil recovery under ambient conditions. In this paper, the approaches of wettability alteration by using nanofluid, stability of nanofluids, and the most reliable wettability alteration mechanisms associated with variant types of nanoparticles have been reviewed. Moreover, the parameters that have a significant influence on nanofluid flooding have been discussed. Finally, the recent studies of the effect of nanoparticles on wettability alteration have been summarised and analysed. Furthermore, this paper presents possible opportunities and challenges regarding wettability alteration using nanofluids.

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“…[ 20,21 ] In these surfactants, nanoparticles are engineered with functional groups on the surface via either electrostatic forces or covalent bonding, which render their ability of reducing the interfacial tension as well as stabilizing various colloidal systems. [ 21–23 ] Recently, studies on Pickering emulsions have shown that graphene, [ 24 ] MoS 2 , [ 25 ] aluminosilicate clays, [ 26,27 ] and some quantum dots (QDs) [ 28 ] are able to lower interfacial tension and show “surfactancy” upon appropriate design of their surface properties. These nanoparticle‐based surfactants retain their nanoparticle properties (e.g., electronic bandgap), which could be beneficial in overall device performance, eliminating the need of surfactant removal for final device fabrication.…”

Section: Figurementioning

confidence: 99%

Colloidal Nanosurfactants for 3D Conformal Printing of 2D van der Waals Materials

et al. 2020

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Printing techniques using nanomaterials have emerged as a versatile tool for fast prototyping and potentially large‐scale manufacturing of functional devices. Surfactants play a significant role in many printing processes due to their ability to reduce interfacial tension between ink solvents and nanoparticles and thus improve ink colloidal stability. Here, a colloidal graphene quantum dot (GQD)‐based nanosurfactant is reported to stabilize various types of 2D materials in aqueous inks. In particular, a graphene ink with superior colloidal stability is demonstrated by GQD nanosurfactants via the π–π stacking interaction, leading to the printing of multiple high‐resolution patterns on various substrates using a single printing pass. It is found that nanosurfactants can significantly improve the mechanical stability of the printed graphene films compared with those of conventional molecular surfactant, as evidenced by 100 taping, 100 scratching, and 1000 bending cycles. Additionally, the printed composite film exhibits improved photoconductance using UV light with 400 nm wavelength, arising from excitation across the nanosurfactant bandgap. Taking advantage of the 3D conformal aerosol jet printing technique, a series of UV sensors of heterogeneous structures are directly printed on 2D flat and 3D spherical substrates, demonstrating the potential of manufacturing geometrically versatile devices based on nanosurfactant inks.

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Ultralow concentration of molybdenum disulfide nanosheets for enhanced oil recovery

Cited by 64 publications

References 52 publications

Preparation and Interfacial Properties of Ultralow Concentrations of Amphiphilic Molybdenum Disulfide Nanosheets

Preparation and Interfacial Properties of Ultralow Concentrations of Amphiphilic Molybdenum Disulfide Nanosheets

The effect of nanoparticles on reservoir wettability alteration: a critical review

Colloidal Nanosurfactants for 3D Conformal Printing of 2D van der Waals Materials

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