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Yang S, Zhen C, Li F, Fu P, Li M, Lu Y, Sheng Z. Clay-Coated Meshes with Superhydrophilicity and Underwater Superoleophobicity for Highly Efficient Oil/Water Separation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4396. [PMID: 37374579 DOI: 10.3390/ma16124396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/06/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023]
Abstract
A novel clay-coated mesh was fabricated via a simple brush-coating method without the use of special equipment, chemical reagents, and complex chemical reactions and operation processes. Possessing superhydrophilicity and underwater superoleophobicity, the clay-coated mesh can be used for efficiently separating various light oil/water mixtures. The clay-coated mesh also exhibits excellent reusability, maintaining a high separation efficiency of 99.4% after 30 repeated separations of the kerosene/water mixture.
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Affiliation(s)
- Shaolin Yang
- School of Materials Science and Engineering, Ningxia Research Center of Silicon Target and Silicon-Carbon Negative Materials Engineering Technology, North Minzu University, Yinchuan 750021, China
| | - Cheng Zhen
- School of Materials Science and Engineering, Ningxia Research Center of Silicon Target and Silicon-Carbon Negative Materials Engineering Technology, North Minzu University, Yinchuan 750021, China
| | - Fangfang Li
- School of Materials Science and Engineering, Ningxia Research Center of Silicon Target and Silicon-Carbon Negative Materials Engineering Technology, North Minzu University, Yinchuan 750021, China
| | - Panpan Fu
- School of Materials Science and Engineering, Ningxia Research Center of Silicon Target and Silicon-Carbon Negative Materials Engineering Technology, North Minzu University, Yinchuan 750021, China
| | - Maohui Li
- School of Materials Science and Engineering, National and Local Joint Engineering Research Center of Advanced Carbon-Based Ceramics Preparation Technology, North Minzu University, Yinchuan 750021, China
| | - Youjun Lu
- School of Materials Science and Engineering, National and Local Joint Engineering Research Center of Advanced Carbon-Based Ceramics Preparation Technology, North Minzu University, Yinchuan 750021, China
| | - Zhilin Sheng
- School of Materials Science and Engineering, Ningxia Research Center of Silicon Target and Silicon-Carbon Negative Materials Engineering Technology, North Minzu University, Yinchuan 750021, China
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Wang J, Zhang Y, Ding J, Xu Z, Zhang J, He Q. Preparation strategy and evaluation method of durable superhydrophobic rubber composites. Adv Colloid Interface Sci 2022; 299:102549. [PMID: 34839925 DOI: 10.1016/j.cis.2021.102549] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/06/2021] [Accepted: 10/17/2021] [Indexed: 01/29/2023]
Abstract
Superhydrophobic rubber composites have broad application prospects in national defense, industrial and agricultural production and daily life due to their special surface wettability. However, its poor durability at present seriously limits its practical application. Microstructure and low surface energy substances are the decisive factors to realize superhydrophobic surface. Therefore, three strategies to improve the durability of superhydrophobic surface were put forward, including improving the mechanical strength of microstructure, enhancing the adhesion between coating and substrate, and constructing self-repairing surface. On this basis, the preparation techniques of durable superhydrophobic rubber composites were summarized, and then the evaluation methods of durability of superhydrophobic rubber composites were introduced in detail from mechanical durability and chemical durability.
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Arabkhani P, Javadian H, Asfaram A, Hosseini SN. A reusable mesoporous adsorbent for efficient treatment of hazardous triphenylmethane dye wastewater: RSM-CCD optimization and rapid microwave-assisted regeneration. Sci Rep 2021; 11:22751. [PMID: 34815470 PMCID: PMC8610993 DOI: 10.1038/s41598-021-02213-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 10/27/2021] [Indexed: 12/07/2022] Open
Abstract
In this research, mesoporous calcium aluminate nanostructures (meso-CaAl2O4) were synthesized using a citric acid-assisted sol-gel auto-combustion process as the potential adsorbent to eliminate toxic triphenylmethane dye malachite green (MG) from synthetic/real effluent. The surface morphology of meso-CaAl2O4 was highly porous with nanometric size and non-homogeneous surface. The specific surface area, total pore volume, and BJH pore diameter of meso-CaAl2O4 were 148.5 m2 g-1, 1.39 cm3 g-1, and 19 nm, respectively. The meso-CaAl2O4 also showed a very high heat resistance, due to losing only 7.95% of its weight up to 800 °C, which is mainly related to the moisture loss. The optimal adsorption conditions were obtained based on response surface methods (RSM)-central composite design (CCD) techniques. The Langmuir isotherm model was used for fitting the adsorption measurements, which presented 587.5 mg g-1 as the maximum adsorption capacity of the dye. The data obtained from the adsorption kinetics model were found to correspond to the pseudo-second-order model. Also, the thermodynamic parameters including enthalpy change (ΔH°), entropy change (ΔS°), and Gibbs free energy change (ΔG°) indicated that MG dye adsorption by the meso-CaAl2O4 was feasible, endothermic, and occurred spontaneously. Furthermore, the meso-CaAl2O4 was regenerated by microwave irradiation under 900 W at 6 min, and the MG dye removal efficiency was remained over 90% after the five cycles of microwave regeneration.
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Affiliation(s)
- Payam Arabkhani
- Department of Chemistry, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Hamedreza Javadian
- Chemistry & Chemical Engineering Research Center of Iran (CCERCI), P.O. Box 14335-186, Tehran, Iran
| | - Arash Asfaram
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.
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Xiang J, Liu X, Liu Y, Wang L, He Y, Luo L, Yang G, Zhang X, Huang C, Zhang Y. Synthesis of a novel anti-fog and high-transparent coating with high wear resistance inspired by dry rice fields. Chem Eng Sci 2021; 242:116749. [DOI: 10.1016/j.ces.2021.116749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/30/2021] [Accepted: 05/05/2021] [Indexed: 12/17/2022]
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Li M, Yang S, Lu Y. Underwater superoleophobic cement-alumina coated meshes for oil/water and emulsion separation. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2021.1955705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Maohui Li
- School of Materials Science and Engineering, North Minzu University, Yinchuan, China
| | - Shaolin Yang
- School of Materials Science and Engineering, North Minzu University, Yinchuan, China
| | - Youjun Lu
- School of Materials Science and Engineering, North Minzu University, Yinchuan, China
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Yang C, Wang M, Yang Z, Zhang D, Tian Y, Jing X, Liu X. Investigation of Effects of Acid, Alkali, and Salt Solutions on Fluorinated Superhydrophobic Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:17027-17036. [PMID: 31814410 DOI: 10.1021/acs.langmuir.9b03469] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Extensive studies have been carried out to investigate the stability of superhydrophobic surfaces under acid, alkali, and salt solutions. It is noted that previous literature studies just demonstrated a variety of experimental phenomena. However, very few works have focused on the protection mechanism or failure mechanism of fluorinated superhydrophobic surfaces from the perspective of chemical aspects. Herein, this paper aims to investigate the effects of acid, alkali, and salt solutions on the stability of fluorinated superhydrophobic surfaces, and the anticorrosion/corrosion mechanism will be further proposed. The superhydrophobic coating was obtained on silicon substrates by laser surface texturing followed by fluoroalkyl silane modification. The resultant surfaces presented a water contact angle (WCA) of 157.6 ± 0.4° with a small water sliding angle (WSA) of 1.3 ± 0.3°. The newly fabricated superhydrophobic surfaces were then immersed in different concentrations of corrosive solutions (acid, alkali, and salt solutions). The revolution of surface wettability and surface morphology on treated silicon surfaces was evaluated through WCAs, scanning electron microscopy, and white light confocal microscopy. The results indicate that the hydrogen ions (H+) played a positive role in the retention of superhydrophobicity. However, the hydroxyl (OH-) and chloride ions (Cl-) presented the negative influence. The protection mechanism or corrosion mechanism under different solutions was proposed based on the X-ray photoelectron spectroscopy results. In addition, the potentiodynamic polarization and electrochemical impedance spectroscopy measurements provided strong support in data and were conducted to verify the rationality of the proposed mechanism.
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Affiliation(s)
- Chengjuan Yang
- School of Mechanical Engineering , Tianjin University , Tianjin 300054 , China
- Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education , Tianjin 300072 , China
| | - Meng Wang
- School of Mechanical Engineering , Tianjin University , Tianjin 300054 , China
- Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education , Tianjin 300072 , China
| | - Zhen Yang
- School of Mechanical Engineering , Tianjin University , Tianjin 300054 , China
- School of Engineering , University of Warwick , Coventry CV4 7AL , U.K
| | - Dawei Zhang
- School of Mechanical Engineering , Tianjin University , Tianjin 300054 , China
- Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education , Tianjin 300072 , China
| | - Yanling Tian
- School of Mechanical Engineering , Tianjin University , Tianjin 300054 , China
- Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education , Tianjin 300072 , China
- School of Engineering , University of Warwick , Coventry CV4 7AL , U.K
| | - Xiubing Jing
- School of Mechanical Engineering , Tianjin University , Tianjin 300054 , China
- Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education , Tianjin 300072 , China
| | - Xianping Liu
- School of Engineering , University of Warwick , Coventry CV4 7AL , U.K
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Tong W, Karthik N, Li J, Wang N, Xiong D. Superhydrophobic Surface with Stepwise Multilayered Micro- and Nanostructure and an Investigation of Its Corrosion Resistance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15078-15085. [PMID: 31682454 DOI: 10.1021/acs.langmuir.9b02910] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We develop a fluorine-free preparation of the superhydrophobic surface on an aluminum alloy with anticorrosion performance and mechanical robustness. The surface morphology, chemical composition, and water repellency were determined with SEM, CLSM, EDS, FT-IR, TG, and contact-angle measurements, respectively. The aluminum matrix superhydrophobic surface (STA-PDMS-ZnO sample) was able to display excellent repellency to water with a WCA of 152° and a WSA of 2°. The outstanding superhydrophobicity on the as-prepared surface was greatly related to the construction of stepwise multilayered micro- and nanostructure within the superhydrophobic surface. Because of the special surface structure, the mechanical robustness and corrosion resistance of the STA-PDMS-ZnO sample were improved. Notably, the anticorrosion mechanism by air pockets was explained by the comparison of two superhydrophobic surfaces prepared with the same low-surface-energy chemicals. The superhydrophobic surface with a multilayered micro- and nanostructure (STA-PDMS-ZnO sample) showed greater corrosion resistance than the surface coated by superhydrophobic modification (control sample). This is because of the entrapments of numerous air pockets within the aluminum matrix superhydrophobic surface, thus strengthening the corrosion resistance. On the basis of the results, the multidimensional superhydrophobic surface is promising for having a good application future in the field of metal corrosion protection.
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Affiliation(s)
- Wei Tong
- School of Materials Science & Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Namachivayam Karthik
- School of Materials Science & Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Jianliang Li
- School of Materials Science & Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Nan Wang
- Automotive Engineering Research Institute , Jiangsu University , Zhenjiang 212013 , China
| | - Dangsheng Xiong
- School of Materials Science & Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
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Dong B, Wang F, Abadikhah H, Hao L, Xu X, Khan SA, Wang G, Agathopoulos S. Simple Fabrication of Concrete with Remarkable Self-Cleaning Ability, Robust Superhydrophobicity, Tailored Porosity, and Highly Thermal and Sound Insulation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:42801-42807. [PMID: 31657542 DOI: 10.1021/acsami.9b14929] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Self-cleaning materials have attracted immense commercial and academic interests in recent years. A major challenge is the scalable and cost-effective fabrication of three-dimensional bulk materials with remarkable self-cleaning and a desirable combination of tailored porosity, robust superhydrophobicity, excellent mechanical strength, heat insulation, and sound absorption ability. Here, self-cleaning concrete was achieved in one step through the combination of the liquid template pore formation and in situ bulk hydrophobic modification. The concrete exhibited superhydrophobicity with a high water contact angle of 166° both on the surface and inside of the sample, which qualified the sample with remarkable stain repellency and long-term stability. The water contact angle remained unchanged under continuous mechanical grinding and harsh environments, such as high temperature (450 °C in air and 650 °C in Ar) and chemical erosion. The concrete with a controllable porosity from 56.3 to 77.4% and homogeneous small pore size (∼15 μm) exhibited high compressive strength and low thermal conductivity. Furthermore, high sound absorption capacity (97%, 500 Hz) at a vibration frequency from 400 to 600 Hz was realized. With these excellent performances and characteristics and easy scalable fabrication, the concrete prepared in this work possessed a wide application prospect.
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Affiliation(s)
- Binbin Dong
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Feihong Wang
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Hamidreza Abadikhah
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Luyuan Hao
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Xin Xu
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Sayed Ali Khan
- College of Physics and Optoelectronics Engineering Shenzhen University , Nanhai Avenue 3688 , Shenzhen , Guangdong 518060 , P. R. China
| | - Gang Wang
- State Key Laboratory of Advanced Refractories , Sinosteel Luoyang Institute of Refractories Research Company, Limited , Luoyang , Henan 471039 , P. R. China
| | - Simeon Agathopoulos
- Department of Materials Science and Engineering , University of Ioannina , Ioannina GR-451 10 , Greece
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