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Sutar RS, Latthe SS, Jundle AR, Gaikwad PP, Ingole SS, Nagappan S, Kim YH, Bhosale AK, Saji VS, Liu S. A facile approach for oil-water separation using superhydrophobic polystyrene-silica coated stainless steel mesh bucket. MARINE POLLUTION BULLETIN 2024; 198:115790. [PMID: 38007872 DOI: 10.1016/j.marpolbul.2023.115790] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/10/2023] [Accepted: 11/11/2023] [Indexed: 11/28/2023]
Abstract
Inspired by traditional shaduf technology in the irrigation field, we fabricated a superhydrophobic stainless steel mesh bucket by layering polystyrene and SiO2 nanoparticles through a facile dip coating technique for effective oil-water separation. The superhydrophobic steel mesh bucket could effectively lift oil as well as microplastic pollutants from the water surface. The water contact angle of a two-layered polystyrene-silica coating was 158.5° ± 2°, while the oil contact angle was nearly 0°. The oil-water separation performance of superhydrophobic mesh was tested using several kinds of oil. The separation efficiency achieved for low viscous oil was 99.33 %, while 86.66 % efficiency was recorded for high viscous oil. The superhydrophobic mesh showed high durability against mechanical tests including bending, folding, twisting, adhesive tape tearing (25 cycles), and sandpaper abrasion (20 cycles). The mesh presented admirable thermal and chemical durability. The present superhydrophobic steel mesh bucket is a suitable candidate for large-scale application.
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Affiliation(s)
- Rajaram S Sutar
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China
| | - Sanjay S Latthe
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China; Self-cleaning Research Laboratory, Department of Physics, Vivekanand College (Autonomous), Affiliated to Shivaji University, Kolhapur 416 003, Maharashtra, India.
| | - Akshay R Jundle
- Self-Cleaning Research Laboratory, Department of Physics, Raje Ramrao College, Affiliated to Shivaji University Kolhapur, Jath, Sangli 416404, Maharashtra, India
| | - Pradip P Gaikwad
- Self-Cleaning Research Laboratory, Department of Physics, Raje Ramrao College, Affiliated to Shivaji University Kolhapur, Jath, Sangli 416404, Maharashtra, India
| | - Sagar S Ingole
- Self-Cleaning Research Laboratory, Department of Physics, Raje Ramrao College, Affiliated to Shivaji University Kolhapur, Jath, Sangli 416404, Maharashtra, India
| | - Saravanan Nagappan
- Industry-University Cooperation Foundation, Pukyong National University, Busan 48513, Republic of Korea
| | - Yong Hyun Kim
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea; School of Electrical Engineering, Pukyong National University, Busan 48513, Republic of Korea
| | - Appasaheb K Bhosale
- Self-Cleaning Research Laboratory, Department of Physics, Raje Ramrao College, Affiliated to Shivaji University Kolhapur, Jath, Sangli 416404, Maharashtra, India
| | - Viswanathan S Saji
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Shanhu Liu
- College of Chemistry and Molecular Science, Henan University, Kaifeng 475004, China.
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Guo Y, Guo H, He D, Sun J, Chen W, Song Y, Zhou G. Development of Cyclic Tetrasiloxane Polymer as a High-Performance Dielectric and Hydrophobic Layer for Electrowetting Displays. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46470-46482. [PMID: 37738528 DOI: 10.1021/acsami.3c08188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Cyclic tetrasiloxane polymer (CTP) has recently garnered interest as a hydrophobic material with unique properties. This study aims to enhance the dielectric constant of CTP films by introducing excess Si-H groups and to explore the impact of synthesis and processing conditions on the resulting properties. The film demonstrates high hydrophobicity, with contact angles of 107° in air and 165° in n-decane, along with a notable dielectric constant of 5.1°. Furthermore, the CTP film displays reversible electrowetting behavior with low contact angle hysteresis (2°) and possesses good transparency (∼99%) and thermal stability. As such, the CTP film has significant potential as a material for the electric wetting of hydrophobic dielectric layers and may serve as a promising alternative in electrowetting applications.
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Affiliation(s)
- Yuanyuan Guo
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- Shenzhen Guohua Optoelectronics Tech., Co., Ltd., Shenzhen 518110, China
- Academy of Shenzhen Guohua Optoelectronics, Shenzhen 518110, China
| | - Hao Guo
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Dinggui He
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Jiaqi Sun
- University of Chinese Academy of Sciences, Ningbo Institute of Materials Technology and Engineering, Ningbo 315201, China
| | - Wangqiao Chen
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Yujie Song
- University of Chinese Academy of Sciences, Ningbo Institute of Materials Technology and Engineering, Ningbo 315201, China
| | - Guofu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- Shenzhen Guohua Optoelectronics Tech., Co., Ltd., Shenzhen 518110, China
- Academy of Shenzhen Guohua Optoelectronics, Shenzhen 518110, China
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Li Z, Wang X, Bai H, Cao M. Advances in Bioinspired Superhydrophobic Surfaces Made from Silicones: Fabrication and Application. Polymers (Basel) 2023; 15:polym15030543. [PMID: 36771848 PMCID: PMC9919805 DOI: 10.3390/polym15030543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/12/2023] [Accepted: 01/16/2023] [Indexed: 01/24/2023] Open
Abstract
As research on superhydrophobic materials inspired by the self-cleaning and water-repellent properties of plants and animals in nature continues, the superhydrophobic preparation methods and the applications of superhydrophobic surfaces are widely reported. Silicones are preferred for the preparation of superhydrophobic materials because of their inherent hydrophobicity and strong processing ability. In the preparation of superhydrophobic materials, silicones can both form micro-/nano-structures with dehydration condensation and reduce the surface energy of the material surface because of their intrinsic hydrophobicity. The superhydrophobic layers of silicone substrates are characterized by simple and fast reactions, high-temperature resistance, UV resistance, and anti-aging. Although silicone superhydrophobic materials have the disadvantages of relatively low mechanical stability, this can be improved by the rational design of the material structure. Herein, we summarize the superhydrophobic surfaces made from silicone substrates, including the cross-linking processes of silicones through dehydration condensation and hydrosilation, and the surface hydrophobic modification by grafting hydrophobic silicones. The applications of silicone-based superhydrophobic surfaces have been introduced such as self-cleaning, corrosion resistance, oil-water separation, etc. This review article should provide an overview to the bioinspired superhydrophobic surfaces of silicone-based materials, and serve as inspiration for the development of polymer interfaces and colloid science.
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Affiliation(s)
- Zhe Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xinsheng Wang
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
| | - Haoyu Bai
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
| | - Moyuan Cao
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Nankai University, Tianjin 300350, China
- Correspondence:
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Recent advances in shape memory superhydrophobic surfaces: Concepts, mechanism, classification, applications and challenges. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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A simple approach for fabrication of superhydrophobic titanium surface with self-cleaning and bouncing properties. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128110] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Zhang J, Zhang L, Gong X. Large-Scale Spraying Fabrication of Robust Fluorine-Free Superhydrophobic Coatings Based on Dual-Sized Silica Particles for Effective Antipollution and Strong Buoyancy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6042-6051. [PMID: 33939432 DOI: 10.1021/acs.langmuir.1c00706] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
With the rapid development of bionic science and manufacturing technology, superhydrophobic surfaces have received extensive attention and research. However, the cumbersome steps, high cost, fluorine pollution, and poor durability greatly restrict its commercial promotion and application. Here, a simple spraying method is used to construct wear-resistant superhydrophobic coatings on various substrates such as glass, filter paper, copper sheets, and polyethylene terephthalate films, using an integrated fluorine-free suspension consisting of silica micropowder, nanofumed silica, epoxy resin, and polydimethylsiloxane. The prepared superhydrophobic coating can withstand 75 sandpaper abrasion cycles and can still maintain good superhydrophobic performance after other physical tests (e.g., hand kneading and tape peeling after knife scraping). In addition, the coating is extremely water-repellent under harsh conditions such as strong UV irradiation and extreme chemical corrosive media. In the buoyancy test, the coated filter paper can bear 39 times its own gravity. This water-repellent interface also has the ability to self-clean in air and oil environments due to its ultralow adhesion to water droplets. Thanks to its simplicity, cheapness, and environmental friendliness, this superhydrophobic coating has promising applications in the fields of construction, chemicals, transportation, and electronics.
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Affiliation(s)
- Jixi Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Ligui Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China
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