Bifunctional Demulsifier of ODTS Modified Magnetite/Reduced Graphene Oxide Nanocomposites for Oil–water Separation. Issue 15 (26th September 2016)

• Record Type: Journal Article
• Authors: Ma, Shenghua; Wang, Yinan; Wang, Xuejing; Li, Qingchuan; Tong, Shanshan; Han, Xiaojun
• Is Part Of: ChemistrySelect. Volume 1:Issue 15(2016)
• Page Start: 4742
• Page End: 4746
• Publication Date: 2016-09-26
• Subjects: Demulsification -- Emulsion -- Magnetite/reduced graphene oxide -- Oil-water Separation; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201601167
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: A bifunctional demulsifier of ODTS modified magnetite/reduced graphene oxide (MRGO@ODTS) was synthesized and demonstrated to demulsify effectively both water‐in‐oil (W/O) and oil‐in‐water (O/W) emulsions, benefitting from its surfactant property. The demulsifier was fully characterized with TEM, XRD, FTIR, TGA, and magnetometer instruments, which confirmed the evenly Fe3 O4 nanoparticle modified RGO sheet structure of MRGO@ODTS demulsifier. The demulsification efficiency can reach 96.8 ± 2.9 % for W/O emulsion and 97.9 ± 2.1 % for O/W emulsion with 25 g L −1 and 75 g L −1 demulsifier, respectively. Another important feature of MRGO@ODTS is responsive to magnetic field, and consequently reusable. The recyclability tests of MRGO@ODTS show there is no obvious decline of demulsification efficiency within ten cycles. The demusification ability of MRGO@ODTS is more effective for W/O emulsions than that for O/W emulsions. The possible demulsification mechanism was also proposed. The bifunctional demulsifier may find great potential in oil‐water separation in industry. Abstract : A bifunctional demulsifier of ODTS modified magnetite/reduced graphene oxide (MRGO@ODTS) was synthesized and demonstrated to demulsify effectively both water‐in‐oil (W/O) and oil‐in‐water (O/W) emulsions, benefitting from its surfactant property.