A three-dimensional porous MoS2–PVP aerogel as a highly efficient and recyclable sorbent for oils and organic solvents

Pin Song; Jun Di; Haiping Chen; Sirui Zhao; Cao Wu; Xun Cao; Meiling Wang; Jun Xiong; Xinli Ye

doi:10.1039/D0MA00219D

A three-dimensional porous MoS₂–PVP aerogel as a highly efficient and recyclable sorbent for oils and organic solvents†

Pin Song,

*^a Jun Di,

^a Haiping Chen,^b Sirui Zhao,^c Cao Wu,^d Xun Cao,

^a Meiling Wang,

^e Jun Xiong*^f and Xinli Ye^d

Author affiliations

* Corresponding authors

^a School of Materials Science & Engineering, Nanyang Technological University, Singapore 639798, Singapore
E-mail: songpin@ntu.edu.sg

^b School of Mechanics, and Optoelectronic, Physics, Anhui, University, of Science, and Technology, Huainan 232001, P. R. China

^c College of Resources and Environment, Anhui Agricultural University, Hefei 230036, P. R. China

^d College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, P. R. China

^e Institute of New Carbon Materials, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

^f Institute for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
E-mail: xiongjun@ujs.edu.cn

Abstract

Three-dimensional (3D) aerogels have attracted more and more attention in oil–water separation, due to their advantages of low density, high porosity, and large specific surface area. However, their application is greatly limited due to their hydrophilic and low adsorption properties. In this work, we report a 3D MoS₂–polyvinylpyrrolidone (PVP) aerogel, prepared by a freeze-drying method, where PVP was used as a skeleton to support the aerogel. As a surfactant, PVP can easily attach to the surface of MoS₂ nanosheets and facilitate the interconnection between nanosheets. The 3D MoS₂–PVP aerogel exhibits low density, high porosity, good hydrophobicity, and excellent adsorption capacity (195–649 times). Moreover, after 30 cycles, the structure of the 3D MoS₂–PVP aerogel is well kept and the adsorption capacity is still retained, at 93.5% and 92.9%, by squeezing and distillation, respectively. Therefore, the obtained 3D MoS₂–PVP aerogel is a promising adsorption material and has great practical application potential in oil–water separation.

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Article information

DOI: https://doi.org/10.1039/D0MA00219D
Article type: Paper
Submitted: 18 Apr 2020
Accepted: 03 Jun 2020
First published: 05 Jun 2020
This article is Open Access

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Mater. Adv., 2020,1, 760-766

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A three-dimensional porous MoS₂–PVP aerogel as a highly efficient and recyclable sorbent for oils and organic solvents

P. Song, J. Di, H. Chen, S. Zhao, C. Wu, X. Cao, M. Wang, J. Xiong and X. Ye, Mater. Adv., 2020, 1, 760 DOI: 10.1039/D0MA00219D

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