Feng, Lidong
[VerfasserIn];
Gao, Yue
[VerfasserIn];
Hou, Xuan
[VerfasserIn];
Dan, Hongbing
[VerfasserIn];
Wei, Yao
[VerfasserIn];
Yin, Weiyan
[VerfasserIn];
Gao, Baoyu
[VerfasserIn];
Yue, Qinyan
[VerfasserIn]
Phytic Acid and Graphene Oxide Functionalized Sponge with Special-Wettability and Electronegativity for Oil-in-Water Emulsion Separation in Single-Step
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Titel:
Phytic Acid and Graphene Oxide Functionalized Sponge with Special-Wettability and Electronegativity for Oil-in-Water Emulsion Separation in Single-Step
Beschreibung:
Developing an emulsion separation material with one-step in-situ purifying capacity and enhanced security in applications, particularly for further scale-up, is of great value but remains a challenge. Herein, the amphiphilic sponge (PARGO@MS) was prepared via impregnation and in-situ growth of the negatively charged hydrophilic phytic acid (PA) and the hydrophobic reduced graphene oxide (RGO) on the surface of the melamine sponge (MS) and applied in emulsion purification. The mechanics, wettability, and adsorption of oil, water, and emulsifier of the modified sponge were analyzed to ensure its potential for stable demulsification. The PA@RGO@MS could purify emulsions (turbidity < 20 NTU within 20 min) in-situ in one step by simple shock adsorption, profited from the hydrophilic and demulsification capability of PA, oil absorption of RGO, and wide reaction and storage space of MS. Targeting the emulsion with distinct properties (density, viscosity, concentration) of the oil phase, the PA@RGO@MS could efficiently enable the purification. Meanwhile, the powerful flame-retardant granted from PA ensures the safe shipment and storage of sponges. The favorable cyclability and diversified operating modes enhance the practical value of the PA@RGO@MS. This study promotes the combined application of demulsification and adsorption in emulsion separation