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Guo P, Zhai S, Xiao Z, et al. One-step fabrication of highly stable, superhydrophobic composites from controllable and low-cost PMHS/TEOS sols for efficient oil cleanup. J Colloid Interface Sci. 2015;446:155-62doi: 10.1016/j.jcis.2015.01.062.
Guo, P., Zhai, S., Xiao, Z., & An, Q. (2015). One-step fabrication of highly stable, superhydrophobic composites from controllable and low-cost PMHS/TEOS sols for efficient oil cleanup. Journal of colloid and interface science, 446155-62. https://doi.org/10.1016/j.jcis.2015.01.062
Guo, Ping, et al. "One-step fabrication of highly stable, superhydrophobic composites from controllable and low-cost PMHS/TEOS sols for efficient oil cleanup." Journal of colloid and interface science vol. 446 (2015): 155-62. doi: https://doi.org/10.1016/j.jcis.2015.01.062
Guo P, Zhai S, Xiao Z, An Q. One-step fabrication of highly stable, superhydrophobic composites from controllable and low-cost PMHS/TEOS sols for efficient oil cleanup. J Colloid Interface Sci. 2015 May 15;446:155-62. doi: 10.1016/j.jcis.2015.01.062. Epub 2015 Jan 28. PMID: 25666456.
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J Colloid Interface Sci. 2015 May 15;446:155-62. doi: 10.1016/j.jcis.2015.01.062. Epub 2015 Jan 28.

One-step fabrication of highly stable, superhydrophobic composites from controllable and low-cost PMHS/TEOS sols for efficient oil cleanup.

Journal of colloid and interface science

Ping Guo, Shangru Zhai, Zuoyi Xiao, Qingda An

Affiliations

  1. Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
  2. Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China. Electronic address: [email protected].
  3. Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China. Electronic address: [email protected].

PMID: 25666456 DOI: 10.1016/j.jcis.2015.01.062

Abstract

Facing the issues of significant increase of industrial oily wastewater and frequent accident of oil spills, the developing of efficient and affordable absorbents for improving oil pollution is of practical significance. Herein, several superhydrophobic and superoleophilic materials, utilizing filter paper, filter cloth and polyester sponge as substrates, through facile coating of hybrid SiO2 colloid particles from controllable PMHS-TEOS sol system were presented. These methyl-modified particles not only provided hierarchical micro/nano-scale structure with distinct roughness, but also largely lowered the surface energy of the coated substances, leading to excellent superhydrophobic and superoleophilic surfaces. The modified filter cloths could be applied for oil/water separation owing to the flexible and foldable property; sponges could efficiently absorb oil or organic solvents in situ on account of its low density and high porosity, and meanwhile the absorbed oil could be easily recollected by simple squeezing. It is worth mentioning that both modified filter cloths and sponges exhibited excellent selectivity, high efficiency, outstanding rapidity and remarkable recyclability. More importantly, after treatment of 100 abrasion cycles with metal scalpel and strongly acidic and basic water droplets, the whole WCA values of resultant filter cloths still maintained superhydrophobic character (>150°), illuminating the charming mechanical and chemical stability of sol-gel processed coating with hierarchical roughness and covalently bonded methyl groups. Combining controllable fabrication process and cheap raw precursors, this method enables scalable manufacturing of stable and superhydrophobic substances, which are promising in practical applications involved in oil/water separation and oil sorption.

Copyright © 2015 Elsevier Inc. All rights reserved.

Keywords: Durability; Hybrid coating; Low-cost; Oil sorption; PMHS; Separation

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