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Materials 2019, 12(7), 1182;

One-Step Synthesis of Environmentally Friendly Superhydrophilic and Superhydrophobic Sponges for Oil/Water Separation

Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 305-719, Korea
Author to whom correspondence should be addressed.
Received: 15 March 2019 / Revised: 28 March 2019 / Accepted: 5 April 2019 / Published: 11 April 2019
(This article belongs to the Special Issue Smart Nanomaterials for Environmental Remediation)
PDF [2564 KB, uploaded 11 April 2019]


Environmentally friendly superhydrophilic and superhydrophobic sponges were synthesized using a one-step approach for oil/water separation. A superhydrophilic or superhydrophobic sponge (MFS/CC-DKGM or MFS/CC-PDMS) was synthesized by one-step coating of melamine formaldehyde sponge (MFS) with a mixture of calcium carbonate (CC) rods and deacetylized Konjac glucomannan (DKGM) [or polydimethylsiloxane (PDMS)]. The MFS/CC-PDMS showed excellent absorption capacity, which reached 52–76 g/g following immersion into various types of oil/water mixtures. Furthermore, the MFS/CC-DKGM and MFS/CC-PDMS exhibited excellent water- and oil-flux performances, which reached 4,702 L/m2 h and 19,591 L/m2 h, respectively, when they were used as filters. The MFS/CC-DKGM and MFS/CC-PDMS maintained their wettability characteristics relatively well after the chemical, thermal, and mechanical stability tests. View Full-Text
Keywords: Oil/water separation; superhydrophilic; superhydrophobic; environmental remediation Oil/water separation; superhydrophilic; superhydrophobic; environmental remediation

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Lee, Y.S.; Lim, Y.T.; Choi, W.S. One-Step Synthesis of Environmentally Friendly Superhydrophilic and Superhydrophobic Sponges for Oil/Water Separation. Materials 2019, 12, 1182.

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