Fabrication of PDMS/GA Composite Materials by Pickering Emulsion Method and Its Application for Oil-Water Separation

Biao Wang, Qingwang Liu, Zhenzhong Fan, Ting Liang, Qilei Tong and Yuanfeng Fu
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Biao Wang: Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China
Qingwang Liu: Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China
Zhenzhong Fan: Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China
Ting Liang: South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510006, China
Qilei Tong: Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China
Yuanfeng Fu: Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China

Energies, 2021, vol. 14, issue 17, 1-10

Abstract: With the intensification of human activities, a large amount of oil and organic solvent waste has been created, resulting in serious ecological and environmental pollution. Therefore, how to balance environmental benefits and economic benefits control a large number of organic solvent and oil pollution is an urgent problem. To solve this problem, a highly efficient oil-water separation material was designed and prepared in this paper. Graphene oxide aerogels were synthesized by the Pickering emulsion and hydrothermal method, and then hydrophobically lipophilic polydimethylsiloxane (PDMS) reduced graphene oxide aerogel composites (PDMS/GA) were obtained by modification of PDMS. The surface functional groups, hydrophobicity, thermal stability, and micromorphology of the materials were tested by various characterization methods. Their properties were tested by an oil absorption test and repeated experiments. The oil absorption performance experiments and repeated performance experiments of PDMS/GA are reported. The number of oxy-gen-containing functional groups of the modified graphene oxide (GO) decreased, and the contact angle of water was 134.4°. The adsorption capacity of n-hexane was up to 18.5 times its own weight. The material has the advantages of being lightweight, easy to recover, good hydrophobicity and lipophilicity, and has the potential for large-scale applications in the field of oil-water separation.

Keywords: PDMS; graphene oxide; aerogel; nanomaterials; oil-water separation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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