Abstract
A superhydrophilic and underwater superoleophobic surface is fabricated by simply coating silica nanospheres onto a glass fiber membrane through a sol-gel process. Such membrane has a complex framework with micro and nano structures covering and presents a high efficiency (more than 98%) of oil-in-water emulsion separation under harsh environments including strong acidic and concentrated salty conditions. This membrane also possesses outstanding stability since no obvious decline in efficiency is observed after different kinds of oil-in-water emulsions separation, which provides it candidate for comprehensive applicability.
Highlights
Materials for oil-water emulsion separation have aroused great interest due to their extensive application in industrial area[1,2,3,4,5,6,7]
As far as we concerned, there are few membranes can separate oil-in-water emulsion under strong acidic and concentrated salty conditions simultaneously, which is of great significance in industrial applications and remains great challenge that becomes a huge drive behind the recent development of oily wastewater purification technology
Undergoing two pre-treatments, own a complex framework with micro-nano structure covering and present the highest efficiency of oil-in-water emulsion separation under harsh environments including strong acidic and concentrated salty conditions. As it working on different kinds of oil-in-water emulsions, no obvious decline in efficiency is observed indicates that our membranes possess outstanding stability and comprehensive applicability
Summary
Materials for oil-water emulsion separation have aroused great interest due to their extensive application in industrial area[1,2,3,4,5,6,7]. As far as we concerned, there are few membranes can separate oil-in-water emulsion under strong acidic and concentrated salty conditions simultaneously, which is of great significance in industrial applications and remains great challenge that becomes a huge drive behind the recent development of oily wastewater purification technology. Undergoing two pre-treatments, own a complex framework with micro-nano structure covering and present the highest efficiency (more than 98%) of oil-in-water emulsion separation under harsh environments including strong acidic and concentrated salty conditions. As it working on different kinds of oil-in-water emulsions, no obvious decline in efficiency is observed indicates that our membranes possess outstanding stability and comprehensive applicability
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