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Zhang X, Chen X, Min W, Liang G, Zhang W, Yao S, Zhong X. Preparation of multifunctional ceramic foams for sound absorption, waterproofing, and antibacterial applications. RSC Adv 2024; 14:1009-1017. [PMID: 38174280 PMCID: PMC10759285 DOI: 10.1039/d3ra06675d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
Using porous materials for sound absorption is an effective approach to alleviating noise pollution, although their hydrophilic properties potentially cause concerns regarding public safety and health risks. This work provides a facile strategy for establishing a multifunctional ceramic system by using sponges as the sintering template, adjusting the pore structure of ceramic foams by varying the ceramic slurry weights and fluorinating the sintered ceramic foams via hydrolysis and condensation processes to provide low surface energy. The obtained porous ceramic foams demonstrate sound-absorbing, waterproof, and antibacterial properties. The results reveal that the increase in ceramic slurry weight decreases the pore size and porosity due to the formation of more compact structures, and the decrease in porosity compromises the sound absorption performance. In the middle-range sound frequency, the maximum sound absorption coefficient reached 0.92. In addition, the fluorination of the rough ceramic surfaces endows the ceramic foams with waterproof properties, which enables them to float on water and display the silver mirror phenomenon. In addition, due to the waterproof property reducing the contact area between the ceramic surface and the bacterial suspension, as well as the lipophilic fluorine chain disrupting the bacterial structures, these ceramic foams exhibited antibacterial rates above 95%. In addition, the mechanisms underlying the sound-absorbing, waterproof, and antibacterial properties of these porous ceramic foams are elucidated. Therefore, this work provides a facile approach to developing a multifunctional ceramic system. Their practical features make these ceramic foams more significant in the field of noise reduction.
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Affiliation(s)
- Xizhi Zhang
- Faculty of Humanities and Arts, Macau University of Science and Technology Taipa Macau 999078 China
| | - Xiaozhong Chen
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering Guangzhou Guangdong 510225 China
| | - Wenchao Min
- HeXiangNing College of Art and Design, Zhongkai University of Agriculture and Engineering Guangzhou Guangdong 510225 China
| | - Guowei Liang
- School of Materials Science and Engineering, South China University of Technology Guangzhou Guangdong 510641 China
| | - Wei Zhang
- Faculty of Humanities and Arts, Macau University of Science and Technology Taipa Macau 999078 China
| | - Shuheng Yao
- Faculty of Humanities and Arts, Macau University of Science and Technology Taipa Macau 999078 China
| | - Ximing Zhong
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering Guangzhou Guangdong 510225 China
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Peng N, Wang L, Jiang W, Li G, Chen B, Jiang W, Liu H. Flexible Platform Composed of T-Shaped Micropyramid Patterns toward a Waterproof Sensing Interface. ACS APPLIED MATERIALS & INTERFACES 2023; 15:56537-56546. [PMID: 37992157 DOI: 10.1021/acsami.3c13631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2023]
Abstract
Antifouling is essential to guaranteeing the sensitivity and precision of flexible sensing interfaces. Materials and structures are the two primary strategies. However, optimizing the inherent microstructures to integrate waterproofing and sensing is rarely reported. To improve the liquid repellency of micropyramid structures, this work presents a study of the design and fabrication of T-shaped micropyramid structures. These structures are patterned uniformly and largely on polydimethylsiloxane (PDMS) skin by the new process of two-step magnetic induction. The waterproofing is related to the breakthrough pressure and the liquid repellency, both of which are a function of structural characteristics, D, and material properties, θY. At the breakthrough transition, two failure models distinguished by θY appear: the depinning transition and the sagging transition. Meanwhile, when considering D in practice, some models will shift and occur early. The D value regulates the transition of the material's wettability to the liquid repellency. The influence of the material's inherent nonwettability on liquid repellency diminishes as D decreases, and the transition from completely wetting liquids to super-repellents can be achieved. Experiments demonstrate that for D = 0.3 under water the resistance is approximately 142 times larger than the depth of the structure, considerably facilitating the waterproofing of conventional micropyramid arrays. This work provides a novel method for fabricating flexible T-shaped micropyramid array structures and opens a new window on flexible sensing interfaces with excellent waterproofing.
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Affiliation(s)
- Niming Peng
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Lanlan Wang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Wei Jiang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Guojun Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Bangdao Chen
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Weitao Jiang
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hongzhong Liu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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Enhancement effect of acylated cellulose nanocrystals on waterborne polyurethane. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02996-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Zhang Y, Wang X, Li Y, Li J. Cellulose nanocrystals composites with excellent thermal stability and high tensile strength for preparing flexible resistance strain sensors. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Zhong X, Gao F, Wei H, Zhou H, Zhou X. Functionalization of mesoporous silica as an effective composite carrier for essential oils with improved sustained release behavior and long-term antibacterial performance. NANOTECHNOLOGY 2021; 33:035706. [PMID: 34649224 DOI: 10.1088/1361-6528/ac2fe2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
In this work, a novel composite carrier system for loading essential oils was developed by using tetraethyl orthosilicate (TEOS) and (3-aminopropyl) triethoxysilane (APTES) as silica precursors and cetyl trimethyl ammonium bromide (CTAB) as a template, and the resultant aminated mesoporous silica was further chemically modified by polyacrylic acid (PAA). The obtained composite carriers exhibited a high loading capability toward tea tree oil (TTO), and they also significantly improved the release behavior of TTO due to the steric hindrance of silica mesopore and the polymer restriction. Besides, it was found that the release behavior followed the First-Order kinetic model, revealing that the release of TTO was driven by the concentration gradient. In addition, these composite carriers with essential oil-loaded demonstrated remarkable antibacterial performance againstE. coliandS. aureus, and they could retain antibacterial performance even after 50 d. Moreover, the antibacterial mechanism was also elucidated with the assistance of nucleic acid and conductivity measurements. Therefore, this work provides a facile and environmentally friendly approach to preparing effective composite carriers for improving the sustained release of essential oils, and the long-term antibacterial performance of these essential oil-loaded composite carriers makes them tremendously potential for practical applications.
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Affiliation(s)
- Ximing Zhong
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Fan Gao
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Hongjie Wei
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Hongjun Zhou
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
| | - Xinhua Zhou
- Innovative Institute for Plant Health, Key Laboratory of Agricultural Green Fine Chemicals of Guangdong Higher Education Institution, School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong 510225, People's Republic of China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Mao Ming, Guangdong 525000, People's Republic of China
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Electron tunneling of hierarchically structured silver nanosatellite particles for highly conductive healable nanocomposites. Nat Commun 2020; 11:2252. [PMID: 32382034 PMCID: PMC7206115 DOI: 10.1038/s41467-020-15709-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/23/2020] [Indexed: 01/13/2023] Open
Abstract
Healable conductive materials have received considerable attention. However, their practical applications are impeded by low electrical conductivity and irreversible degradation after breaking/healing cycles. Here we report a highly conductive completely reversible electron tunneling-assisted percolation network of silver nanosatellite particles for putty-like moldable and healable nanocomposites. The densely and uniformly distributed silver nanosatellite particles with a bimodal size distribution are generated by the radical and reactive oxygen species-mediated vigorous etching and reduction reaction of silver flakes using tetrahydrofuran peroxide in a silicone rubber matrix. The close work function match between silicone and silver enables electron tunneling between nanosatellite particles, increasing electrical conductivity by ~5 orders of magnitude (1.02×103 Scm−1) without coalescence of fillers. This results in ~100% electrical healing efficiency after 1000 breaking/healing cycles and stability under water immersion and 6-month exposure to ambient air. The highly conductive moldable nanocomposite may find applications in improvising and healing electrical parts. Self-healable conductive materials are of importance for emerging electronic technologies. Here, Suh et al. report a nanocomposite exhibiting high conductivity facilitated by electron tunneling between silver nanoparticles and its 100% recovery of conductivity after 1000 breaking and healing cycles.
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