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Deachophon A, Bovornratanaraks T, Poompradub S. Modified silica-based double-layered hydrophobic-coated stainless steel mesh and its application for oil/seawater separation. Sci Rep 2024; 14:731. [PMID: 38184703 PMCID: PMC10771502 DOI: 10.1038/s41598-024-51264-8] [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: 09/15/2023] [Accepted: 01/03/2024] [Indexed: 01/08/2024] Open
Abstract
A double-layered hydrophobic-coated stainless steel mesh (CSSM) was successfully prepared by vapor deposition of polydimethylsiloxane (PDMS) to form aerosol silica (SiO2) particles on SSM followed by coating with the in situ modified SiO2 generated in the natural rubber (NR) latex for use in oil/seawater separation. The in situ SiO2 particles were modified with octyltriethoxysilane (OTES) or hexadecyltrimethoxysilane (HDTMS). Transmission electron microscopy, 29Si solid-state nuclear magnetic resonance, and Fourier transform infrared spectroscopy were used to determine the structure of the in situ modified SiO2 generated in the NR latex. Scanning electron microscopy and water contact angle analyses were applied to characterize the morphology and hydrophobicity of the CSSM, respectively. The presence of aerosol SiO2 particles from PDMS and in situ modified SiO2 by OTES (MSi-O) or HDTMS (MSi-H) generated in the NR could enhance the surface roughness and hydrophobicity of the CSSM. The hydrophobic CSSM was then applied for the separation of chloroform/seawater and crude oil/seawater mixtures. A high separation efficiency (up to 99.3%) with the PDMS/NR/MSi-H CSSM was obtained and the mesh was reusable for up to 20 cycles.
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Affiliation(s)
- Aunchalee Deachophon
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Phatumwan, Bangkok, 10330, Thailand
| | - Thiti Bovornratanaraks
- Department of Physics, Faculty of Science, Chulalongkorn University, Phatumwan, Bangkok, 10330, Thailand
| | - Sirilux Poompradub
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Phatumwan, Bangkok, 10330, Thailand.
- Center of Excellent in Green Materials for Industrial Application, Faculty of Science, Chulalongkorn University, Phatumwan, Bangkok, 10330, Thailand.
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.
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Batool M, B. Albargi H, Ahmad A, Sarwar Z, Khaliq Z, Qadir MB, Arshad SN, Tahir R, Ali S, Jalalah M, Irfan M, Harraz FA. Nano-Silica Bubbled Structure Based Durable and Flexible Superhydrophobic Electrospun Nanofibrous Membrane for Extensive Functional Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1146. [PMID: 37049240 PMCID: PMC10096561 DOI: 10.3390/nano13071146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/14/2023] [Accepted: 03/18/2023] [Indexed: 06/19/2023]
Abstract
Nanoscale surface roughness has conventionally been induced by using complicated approaches; however, the homogeneity of superhydrophobic surface and hazardous pollutants continue to have existing challenges that require a solution. As a prospective solution, a novel bubbled-structured silica nanoparticle (SiO2) decorated electrospun polyurethane (PU) nanofibrous membrane (SiO2@PU-NFs) was prepared through a synchronized electrospinning and electrospraying process. The SiO2@PU-NFs nanofibrous membrane exhibited a nanoscale hierarchical surface roughness, attributed to excellent superhydrophobicity. The SiO2@PU-NFs membrane had an optimized fiber diameter of 394 ± 105 nm and was fabricated with a 25 kV applied voltage, 18% PU concentration, 20 cm spinning distance, and 6% SiO2 nanoparticles. The resulting membrane exhibited a water contact angle of 155.23°. Moreover, the developed membrane attributed excellent mechanical properties (14.22 MPa tensile modulus, 134.5% elongation, and 57.12 kPa hydrostatic pressure). The composite nanofibrous membrane also offered good breathability characteristics (with an air permeability of 70.63 mm/s and a water vapor permeability of 4167 g/m2/day). In addition, the proposed composite nanofibrous membrane showed a significant water/oil separation efficiency of 99.98, 99.97, and 99.98% against the water/xylene, water/n-hexane, and water/toluene mixers. When exposed to severe mechanical stresses and chemicals, the composite nanofibrous membrane sustained its superhydrophobic quality (WCA greater than 155.23°) up to 50 abrasion, bending, and stretching cycles. Consequently, this composite structure could be a good alternative for various functional applications.
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Affiliation(s)
- Misbah Batool
- Department of Chemistry, University of Sargodha, Sargodha 40100, Pakistan;
| | - Hasan B. Albargi
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia; (H.B.A.); (M.J.)
- Department of Physics, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
| | - Adnan Ahmad
- Department of Textile Engineering, National Textile University, Faisalabad 37610, Pakistan; (Z.S.); (R.T.); (S.A.)
| | - Zahid Sarwar
- Department of Textile Engineering, National Textile University, Faisalabad 37610, Pakistan; (Z.S.); (R.T.); (S.A.)
| | - Zubair Khaliq
- Department of Materials, National Textile University, Faisalabad 37610, Pakistan;
| | - Muhammad Bilal Qadir
- Department of Textile Engineering, National Textile University, Faisalabad 37610, Pakistan; (Z.S.); (R.T.); (S.A.)
| | - Salman Noshear Arshad
- Department of Chemistry and Chemical Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan;
| | - Rizwan Tahir
- Department of Textile Engineering, National Textile University, Faisalabad 37610, Pakistan; (Z.S.); (R.T.); (S.A.)
| | - Sultan Ali
- Department of Textile Engineering, National Textile University, Faisalabad 37610, Pakistan; (Z.S.); (R.T.); (S.A.)
| | - Mohammed Jalalah
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia; (H.B.A.); (M.J.)
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia;
| | - Muhammad Irfan
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia;
| | - Farid A. Harraz
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia; (H.B.A.); (M.J.)
- Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Sharurah 68342, Saudi Arabia
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