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Zhang YP, Wang YN, Du HL, Qv LB, Chen J. Preparation of Superhydrophilic/Underwater Superoleophobic and Superhydrophobic Stainless Steel Meshes Used for Oil/Water Separation. Polymers (Basel) 2023; 15:3042. [PMID: 37514432 PMCID: PMC10383247 DOI: 10.3390/polym15143042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/05/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Robust membrane materials with high efficiency have attracted extensive attention in oil/water separation. In this work, carbon particles via candle combustion were firstly adsorbed on the surface of stainless steel meshes (SSMs), which formed a thin hydrophobic coating, and a rough structure was then constructed through chemical vapor deposition and high temperature calcination, with the resultant SSM surface wrapped with uniform silica coating possessing the characteristic of superoleophobicity underwater. Scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), and X-ray powder diffraction (XRD) were used to characterize the modified SSMs. The prepared SSMs were superhydrophilic in air, and they had superoleophobicity underwater (157.4°). The separation efficiency of five oil/water mixtures was above 98.8%, and the separation flux was 46,300 L·m-2·h-1. After it was immersed in 1 mol/L NaOH, 1 mol/L HCl and 3.5 wt% NaCl for 24 h, respectively, the efficiency was still above 97.3%. Further immersion in the solution of dopamine and octadecylamine resulted in the transformation of superhydrophililc/superoleophobicity-underwater SSMs to superhydrophobic SSMs, and the resultant SSMs with reverse surface wettability was also used for the oil/water separation with good separation efficiency and separation flux.
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Affiliation(s)
- Yu-Ping Zhang
- College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, China
- College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Ya-Ning Wang
- College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Hong-Li Du
- College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, China
| | - Ling-Bo Qv
- College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
| | - Jun Chen
- College of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China
- College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China
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Zhang J, Yang J, Li Q, Ding J, Liu L, Sun T, Li H. Preparation of WPU-based super-amphiphobic coatings functionalized by in situ modified SiO x particles and their anti-biofilm mechanism. Biomater Sci 2021; 9:7504-7521. [PMID: 34643189 DOI: 10.1039/d1bm01285a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Fabrication of anti-wetting coatings with anti-biofouling and anti-biofilm properties has become a hot spot of attention in recent years. However, the anti-biofilm mechanism of anti-bacterial adhesion coatings with different wet resistance properties has not been explored in detail. In this work, SiOx micro-nano particles were prepared by the Stöber method and were in situ modified. The SiOx/waterborne polyurethane (WPU) coatings were prepared by the drop coating method, and the coatings with different hydrophobic and oleophobic properties were constructed by modifying the process conditions using SiOx micro-nano particles as the roughness construction factor. Taking the dominant spoilage bacteria of aquatic products, Shewanella putrefaciens as the object, the anti-bacterial adhesion properties and anti-biofilm mechanism of the SiOx/WPU coatings were investigated. The results show that, with the unmodified SiOx particles increasing from 1.2% (w/V) to 4.0% (w/V), the hydrophobicity and thermal stability of the SiOx/WPU coatings are significantly enhanced, but the oil repellency becomes worse due to the mesoporous structure. After SiOx micro-nano particles are modified with 1H,1H,2H,2H-perfluorooctyl trichlorosilane (PFOTS), the surface energy of the SiOx/WPU coatings is decreased, the liquid repellency is improved, and the surfaces are rough with the appearance of fluorocarbon compounds, but the thermal stabilities are slightly reduced. Among them, after the secondary modification of SiOx micro-nano particles, the SiOx/WPU coatings showed excellent oil repellency, lower surface energies and higher fluorocarbon content on the surface. Particularly, SiOx/WPU coatings exhibited super-amphiphobicity after adjusting the amount of concentrated ammonia added during the secondary modification process. Meanwhile, we found that for the hydrophobic SiOx/WPU coatings, the stronger the oleophobic property, the greater the anti-bacterial adhesion ability is, while the anti-bacterial adhesion ability of hydrophobic and selectively oleophobic or superhydrophobic and oleophobic SiOx/WPU coatings is poor than that of amphiphilic SiOx/WPU coatings. However, because the super-amphiphobic SiOx/WPU coatings can be in the Cassie state with the bacterial solution for a long time, it can "capture" enough air to inhibit the irreversible adhesion of the bacteria. More importantly, the coatings can also inhibit the metabolic activity, secretion of extracellular polysaccharides, and activities of ATPase and AKP of the adherent bacteria, so it has a better anti-biofilm property. The anti-biofilm coatings can be used as food packaging materials or coated on the inner surface of packaging boxes to prevent the microbial infection.
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Affiliation(s)
- Jiatao Zhang
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, College of Food Science and Engineering, Bohai University, Jinzhou 121013, China.
| | - Junyi Yang
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, College of Food Science and Engineering, Bohai University, Jinzhou 121013, China.
| | - Qiuying Li
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, College of Food Science and Engineering, Bohai University, Jinzhou 121013, China.
| | - Jie Ding
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, College of Food Science and Engineering, Bohai University, Jinzhou 121013, China.
| | - Liangjun Liu
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, College of Food Science and Engineering, Bohai University, Jinzhou 121013, China.
| | - Tong Sun
- National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, College of Food Science and Engineering, Bohai University, Jinzhou 121013, China.
| | - Hehe Li
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China.
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Zhang SM, Zhang YP, Liu ML, Wang BX, Liu PF, Bai X, Cui CX, Qu LB. Smart Janus titanium mesh used as a diode for both liquid droplet and air bubble transport. NEW J CHEM 2021. [DOI: 10.1039/d1nj02998c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A Janus titanium mesh was fabricated with unidirectional transport for both liquid droplets in air and gas underwater.
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Affiliation(s)
- Shi-Ming Zhang
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Yu-Ping Zhang
- Henan Institute of Science and Technology, Xinxiang 453000, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ming-Lin Liu
- Henan Institute of Science and Technology, Xinxiang 453000, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Bing-Xing Wang
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Peng-Fei Liu
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Xiuzhi Bai
- Henan Institute of Science and Technology, Xinxiang 453000, China
| | - Cheng-Xing Cui
- Henan Institute of Science and Technology, Xinxiang 453000, China
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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Liang L, Liu P, Su H, Qian H, Ma H. One‐step fabrication of superhydrophobic sponge with magnetic controllable and flame‐retardancy for oil removing and collecting. J Appl Polym Sci 2020. [DOI: 10.1002/app.49353] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ling Liang
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction CorpsTarim University Alar Xinjiang China
- Beijing Laboratory of Biomedical Materials, College of Materials Science and EngineeringBeijing University of Chemical Technology Beijing China
| | - Pengfei Liu
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction CorpsTarim University Alar Xinjiang China
- School of Chemistry and Chemical EngineeringHenan Institute of Science and Technology Xinxiang Henan China
| | - Haijian Su
- China Tobacco Shandong Industrial Co., Ltd. Qing Dao Shandong China
| | - Hang Qian
- School of Chemistry and Chemical EngineeringHenan Institute of Science and Technology Xinxiang Henan China
| | - Hongkun Ma
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction CorpsTarim University Alar Xinjiang China
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