Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 31, Pages 15057-15063Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta04725a
Keywords
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Funding
- National Natural Science Foundation of China [51505108, 51475118]
- Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education, Harbin Institute of Technology [2017KM009]
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The coexistence of superhydrophilicity and superoleophobicity was considered abnormal since a superoleophobic surface would also be superhydrophobic based on the classic surface free energy (SFE) theory. However, several studies have succeeded in preparing uperhydrophilic/superoleophobic surfaces, although the theoretical explanations were still not convincing due to the lack of experimental evidence. In this study, a theory for the coexistence of superhydrophilicity and superoleophobicity was developed with a series of experimental proofs. Four different superhydrophilic/superoleophobic surfaces were prepared as examples and it can be inferred that much more different surfaces with such wettability can be prepared for different specific applications based on the developed theory, and oil/water separations were conducted by using one kind of these prepared surfaces.
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