Document Type

Journal Article

Publication Title

Fuel

Volume

312

Publisher

Elsevier

School

School of Engineering / Centre for Sustainable Energy and Resources

RAS ID

52121

Funders

National Major Project

National Natural Science Foundation of China

Comments

This is an Authors Accepted Manuscript version of an Article published by Elsevier, at https://doi.org/10.1016/j.fuel.2021.122938

Feng, Y., Hou, J., Yang, Y., Wang, S., Wang, D., Cheng, T., & You, Z. (2022). Morphology of MoS2 nanosheets and its influence on water/oil interfacial tension: A molecular dynamics study. Fuel, 312, article 122938.

https://doi.org/10.1016/j.fuel.2021.122938

Abstract

Plate-shaped nanoparticles exhibit huge potential for a broad range of cutting-edge applications in interfacial-based science and technology, such as enhanced oil recovery in hydrocarbon reservoirs, owing to their remarkable features in superior affinity toward interfaces. Understanding the adsorption behavior of nanosheets (NSs) self-assembled at the water/oil interface (W/O interface) is crucial to elucidate the variation of interfacial tension (IFT) and establish special design criteria for efficient industrial use of NSs. Here we present a molecular dynamics study to reveal the morphology of carbon-chain modified molybdenum disulfide (MoS2) nanosheets. The stress exerted on a nanosheet is analyzed. The simulation results demonstrate a significant decrease in interfacial tension after adding NSs to the water/oil system, followed by a noticeable fluctuation with increased NS concentration. Surprisingly, the carbon-chain modified MoS2 nanosheets do not show a greater ability in altering IFT compared to unmodified ones. The IFT fluctuation is found strongly linked to the competition between the effects of interface coverage rate of adsorbed nanosheets and the intersection angle arising from non-uniform forces acting on a nanosheet.

DOI

10.1016/j.fuel.2021.122938

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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