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Li R, Zang M, Cheng Y, Qi H, Wang Y, Sun B. Temperature and pH endurable self-assembled camellia-like nanostructure achieved on zinc sheet with superamphiphobicity for fog harvesting. Heliyon 2023; 9:e14775. [PMID: 37035379 PMCID: PMC10073895 DOI: 10.1016/j.heliyon.2023.e14775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 03/28/2023] Open
Abstract
Easy-implement and low-cost fabrication of super-hydrophobic/super-oleophobic materials is of great significance for efficient fog harvesting. Herein, we propose a simple two-step procedure based on Cu/1-octadecanethiol (ODT) self-assembled monolayer (SAM) modified zinc plates. Interestingly, the whole process mimics the blooming process of flowers in nature: the deposition of copper particle and the subsequent formation of SAM drives the surface undergo gradually stretches and finally blooms to camellia-like nanostructures. The water contact angle (WCA) and oil contact angle (OCA) reach 160 ± 1° and 159 ± 1° respectively, as a result of the formation of layered petal structure that traps air effectively, which is attributed as one of the most important factors for the superamphiphobic effect. In addition to much enhanced facility in fog collection, the materials maintain excellent performance in acid/base environments (1 ≤ pH ≤ 14), broad temperature conditions ranging from -18 °C to 240 °C, and the artificial sea environment, and exhibit capable wear resistance as well as self-cleaning property. The cooperation of all these multiple properties ensures the robustness and stability for efficient fog collection.
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Xia Y, Zhu N, Zhao Y, Zhu J, Chen H, Xu L, Yao L. Construction of Durable Self-Cleaning PDMS Film on Polyester Fabric Surface. MATERIALS (BASEL, SWITZERLAND) 2022; 16:ma16010052. [PMID: 36614386 PMCID: PMC9820876 DOI: 10.3390/ma16010052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/11/2022] [Accepted: 12/14/2022] [Indexed: 05/02/2023]
Abstract
The superhydrophobic surface can be prepared by two methods; one is by reducing the surface energy, and the other is by constructing a micro-nano rough structure. To achieve high superhydrophobic performance in terms of durability, the firm combination of hydrophobic coating and substrate is particularly important. Here, we use polydimethylsiloxane (PDMS) as a low surface energy monomer, water-borne polyurethane (WPU) as a dispersing aid, and use high-power ultrasound to disperse PDMS in water to make emulsion. The polyester matrix is etched by atmospheric plasma, dipped in PDMS emulsion, dried, and finally baked to induce PDMS on the surface of polyester fiber to cross-link into film. A series of tests on the self-cleaning polyester fabric prepared by this method show that when the concentration of PDMS is 8 g/L and the mass ratio of PDMS to WPU is 20:1, the water contact angle (WCA) reaches the maximum value of 148.2°, which decreases to 141.5° after 200 times of washing and 138.6° after 5000 times of rubbing. Before and after PDMS coating, the tensile strength of polyester fabric increases from 489.4 N to 536.4 N, and the water vapor transmission decreases from 13,535.7 g/(m2·d) to 12,224.3 g/(m2·d). This research is helpful to the large-scale production of self-cleaning polyester fabric. In the future, on the basis of this research, we will add functional powder to endow self-cleaning polyester fabric with higher hydrophobicity and other properties.
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Affiliation(s)
- Yong Xia
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Nan Zhu
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Ying Zhao
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Jiehui Zhu
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Huajie Chen
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Liyun Xu
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
| | - Lirong Yao
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
- Correspondence: ; Tel.: +86-150-5126-2516
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In-situ synthesis of polypyrrole/silver for fabricating alginate fabrics with high conductivity, UV resistance and hydrophobicity. Carbohydr Polym 2021; 270:118362. [PMID: 34364607 DOI: 10.1016/j.carbpol.2021.118362] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/22/2021] [Accepted: 06/16/2021] [Indexed: 12/28/2022]
Abstract
In this research, the polypyrrole/silver (PPy/Ag) composite was first in-situ prepared on alginate fabrics by chemical oxidative polymerization of pyrrole (Py) monomer using silver nitrate as oxidant and sodium dodecyl sulfate (SDS) as the dopant. The effects of mole ratio of Py to silver nitrate, reaction time and dopant concentration on the preparation of PPy/Ag composite were optimized. It was found the optimal molar ratio of Py to silver nitrate was 1:1.5 with 0.02 M SDS under the reaction time of 10 h. Then, the microstructure and properties of resultant PPy/Ag composite were analyzed by scanning electron microscope (SEM), Fourier infrared spectrometer (FT-IR), X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and the thermogravimetry analysis (TGA), respectively. Finally, the influences of PPy/Ag coating on the performance of alginate fabrics including electrical conductivity, hydrophilicity, antistatic property and anti-ultraviolet capability were determined. It was found that the electrical conductivity of alginate fabric could be intensively increased after PPy/Ag coating. Meantime, the anti-ultraviolet capability and hydrophobicity could be largely improved by PPy/Ag coating especially under high Py dosage. This paper introduced a simple method for preparing PPy/Ag composite direct on alginate fabric to make it a good functional substrate which could be applied in many fields.
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Chowdhury MA, Shuvho MBA, Hossain MI, Ali MO, Kchaou M, Rahman A, Yeasmin N, Khan AS, Rahman MA, Mofijur M. Multiphysical analysis of nanoparticles and their effects on plants. Biotechnol Appl Biochem 2020; 68:1257-1270. [PMID: 33016525 DOI: 10.1002/bab.2049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/12/2020] [Indexed: 01/04/2023]
Abstract
Nanoparticles are the magic bullets and at the leading edge in the field of nanotechnology, and their unique properties make these materials indispensable and superior in many areas, including the electronic field. Extensive applications of nanomaterials are incontrovertibly entering our living system. The increasing use of nanomaterials into the ecosystem is one of the crucial environmental factors that human being is facing. Nanomaterials raise noticeable toxicological concerns; particularly their accumulation in plants and the resultant toxicity may affect the food chain. Here, we analyzed the characterization of nanomaterials, such as graphene, Al2 O3 , TiO2 , and semi-insulating or conducting nanoparticles. Quantitative evaluation of the nanomaterials was conducted and their commercialization aspects were discussed. Various characterization techniques, scanning electron microscopy, X-ray diffraction, and ultraviolet rays were utilized to identify the morphology, phase, absorbance, and crystallinity. In addition, we analyzed the effects of nanomaterials on plants. The toxicity of nanoparticles has severe effects on loss of morphology of the plants. Potential mechanisms including physical and physiological effects were analyzed. In future studies, it is indispensable to assess widely accepted toxicity evaluation for safe production and use of nanomaterials.
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Affiliation(s)
| | - Md Bengir Ahmed Shuvho
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh.,Department of Industrial and Production Engineering, National Institute of Textile Engineering and Research (NITER), Dhaka, Bangladesh
| | - Md Imran Hossain
- Department of Industrial and Production Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh
| | - Md Osman Ali
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh
| | - Mohamed Kchaou
- Department of Industrial Engineering, College of Engineering, University of Bisha, Bisha, Saudi Arabia.,Laboratory of Electromechanical Systems (LASEM), National Engineering School of Sfax, University of Sfax, Sfax, Tunisia
| | - Atiqur Rahman
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh
| | - Nilufa Yeasmin
- Department of Industrial and Production Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh
| | - Abdus Sabur Khan
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh
| | - Md Azizur Rahman
- Department of Mechanical Engineering, Dhaka University of Engineering and Technology (DUET), Gazipur, Bangladesh
| | - M Mofijur
- School of Information, Systems and Modelling, Faculty of Engineering and IT, University of Technology Sydney, Sydney, Australia.,Mechanical Engineering Department, Prince Mohammad Bin Fahd University, Al Khobar, Saudi Arabia
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