Recent Progress in Fabrication of Candle Soot Modified Superhydrophobic Superoleophilic Surfaces for Oil-Water Separation

Author(s): Mehejbin R Mujawar, Rajesh B Sawant, Deepak A Kumbhar, Sanjay S Latthe, Ankush M Sargar and Shivaji R Kulal

Abstract:

Continually occurred the oceanic oil spill accidents and discharging huge amount of industrial oily wastewater cause a serious threat to the environment. Oil and organic pollutants in water has a severe problem for aquatic life and human being. There is a need to develop technology for oil-water separation. Recently, superhydrophobic/superoleophilic sponges, metal meshes, membranes and porous materials plays crucial role to separate oil from oil-water mixture. The micro and nanopores of substrate facilitate to enter liquid into it and superhydrophobic/superoleophilic property of substrate surface resist water and allows oil to enter into the porous substrate. Carbon soot nanoparticles are hydrophobic (water repellent) in nature and has the advantages of cost-effectiveness and production scalability over other carbons like graphene, carbon nanotubes (CNTs), carbon nanodots (CNDs), etc., in their synthesis. Carbon soot based superhydrophobic/superoleophilic surfaces have outstanding water repulsion and oil absorption capacity, highly selectivity, chemical inertness and excellent recyclability. In this paper, we discussed recent progress of carbon soot based superhydrophobic/superoleophilic sponges and meshes for oil-water separation.

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