Abstract
Underwater superoleophobic mesh has been broadly investigated but its mechanical durability was seldom mentioned. Thus, in this work a ZrO2-coated stainless steel mesh was prepared for durable oil/water separation by an electrophoretic deposition method using ZrO2 sol as electrolyte. The ZrO2 coating is of hierarchical structure, making the Z-SSM superhydrophilic in air and superoleophobic underwater. The mesh exhibited outstanding separation efficiency of above 97.5% for various oil/water mixtures. The separation efficiency of n-hexane/water mixture maintained over 98% after 50 times of recycle separation. Moreover, the coated mesh maintained high separation efficiency after 30 cycles of abrasion, showing good stability.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (21776094), Natural Science Foundation of Guangdong Province (2015A030313506), Science and Technology Planning Project of Guangdong Province (2014A010105052, 2017A010103039) and National Undergraduate Innovative and Entrepreneurial Training Program (201710561091). The authors gratefully thanks Prof. Shuai Yuan of Shanghai University for providing information of the ZrO2 sol.
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Zhaodan Chen and Cailong Zhou contributed equally to this work.
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Chen, Z., Zhou, C., Lin, J. et al. ZrO2-coated stainless steel mesh with underwater superoleophobicity by electrophoretic deposition for durable oil/water separation. J Sol-Gel Sci Technol 85, 23–30 (2018). https://doi.org/10.1007/s10971-017-4518-5
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DOI: https://doi.org/10.1007/s10971-017-4518-5