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Robust superhydrophobic attapulgite meshes for effective separation of water-in-oil emulsions.
J Colloid Interface Sci. 2019 Dec 01; 557:84-93.JC

Abstract

Special-wetting materials have been broadly studied in various oil/water separation processes. However, there are granted numerous challenges in extremely durable materials with mechanical robustness, especially considering the great requirements in purifying emulsified oil/water mixtures. Herein, we present a facile route to prepare robust superhydrophobic surface by spraying Octadecyltrimethoxys modified attapulgite suspension combined with inorganic adhesive on mesh. The as-prepared meshes show eminent superhydrophobicity and acquire a gravity driven water-in-oil emulsion separation with efficiency above 99.7% and flux above 106.7 L m-2h-1 even after multiple cycles. In addition, the meshes exhibit robust and stable superhydrophobicity with water contact angles above 150° after 200 sandpaper abrasion (transverse shear force) and harsh sand impact (longitudinal impact force) cycles, and meanwhile, still maintain outstanding emulsion separation performance during tests. This study is meaningful for the development of fabricating low-energy separating materials with high efficiency and mechanical robustness for harsh chemical engineering.

Authors+Show Affiliations

Research Center of Gansu Military and Civilian Integration Advanced Structural Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, PR China.Research Center of Gansu Military and Civilian Integration Advanced Structural Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, PR China.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Key Laboratory of Nonferrous Metal Alloys and Processing, Ministry of Education, School of Materials Science & Engineering, Lanzhou University of Technology, 36 Langongping Road, Qilihe District, Lanzhou 730050, PR China. Electronic address: syqch@163.com.Key Laboratory for Bionic Engineering Ministry of Education, Jilin University, PR China.Key Laboratory for Bionic Engineering Ministry of Education, Jilin University, PR China.Research Center of Gansu Military and Civilian Integration Advanced Structural Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, 967 Anning East Road, Lanzhou 730070, PR China. Electronic address: jianli83@126.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31514096

Citation

Li, Haoyu, et al. "Robust Superhydrophobic Attapulgite Meshes for Effective Separation of Water-in-oil Emulsions." Journal of Colloid and Interface Science, vol. 557, 2019, pp. 84-93.
Li H, Zhu G, Shen Y, et al. Robust superhydrophobic attapulgite meshes for effective separation of water-in-oil emulsions. J Colloid Interface Sci. 2019;557:84-93.
Li, H., Zhu, G., Shen, Y., Han, Z., Zhang, J., & Li, J. (2019). Robust superhydrophobic attapulgite meshes for effective separation of water-in-oil emulsions. Journal of Colloid and Interface Science, 557, 84-93. https://doi.org/10.1016/j.jcis.2019.09.013
Li H, et al. Robust Superhydrophobic Attapulgite Meshes for Effective Separation of Water-in-oil Emulsions. J Colloid Interface Sci. 2019 Dec 1;557:84-93. PubMed PMID: 31514096.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Robust superhydrophobic attapulgite meshes for effective separation of water-in-oil emulsions. AU - Li,Haoyu, AU - Zhu,Guorong, AU - Shen,Yongqian, AU - Han,Zhiwu, AU - Zhang,Junqiu, AU - Li,Jian, Y1 - 2019/09/04/ PY - 2019/07/25/received PY - 2019/08/31/revised PY - 2019/09/03/accepted PY - 2019/9/13/pubmed PY - 2019/9/13/medline PY - 2019/9/13/entrez KW - Attapulgite KW - Inorganic adhesives KW - Mechanical durability KW - Superhydrophobicity KW - Water-in-oil emulsion separation SP - 84 EP - 93 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 557 N2 - Special-wetting materials have been broadly studied in various oil/water separation processes. However, there are granted numerous challenges in extremely durable materials with mechanical robustness, especially considering the great requirements in purifying emulsified oil/water mixtures. Herein, we present a facile route to prepare robust superhydrophobic surface by spraying Octadecyltrimethoxys modified attapulgite suspension combined with inorganic adhesive on mesh. The as-prepared meshes show eminent superhydrophobicity and acquire a gravity driven water-in-oil emulsion separation with efficiency above 99.7% and flux above 106.7 L m-2h-1 even after multiple cycles. In addition, the meshes exhibit robust and stable superhydrophobicity with water contact angles above 150° after 200 sandpaper abrasion (transverse shear force) and harsh sand impact (longitudinal impact force) cycles, and meanwhile, still maintain outstanding emulsion separation performance during tests. This study is meaningful for the development of fabricating low-energy separating materials with high efficiency and mechanical robustness for harsh chemical engineering. SN - 1095-7103 UR - https://www.unboundmedicine.com/medline/citation/31514096/Robust_superhydrophobic_attapulgite_meshes_for_effective_separation_of_water-in-oil_emulsions L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9797(19)31046-X DB - PRIME DP - Unbound Medicine ER -
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