TALANTA
·
2023
·
IF 6.1
Huihui Yu,Haijian Yang,Weishuai Liu,Longsheng Jin,Bing Jin,Meisheng Wu
A novel portable and disposable bipolar electrode (BPE)-electrochemiluminescence (ECL) device was fabricated for fumonisin B 1 (FB 1 ) detection. BPE was fabricated by using MWCNTs and polydimethylsiloxane (PDMS) due to their excellent electrical conductivity and good mechanical stiffness. After the deposition of Au NPs on the cathode of BPE, the ECL signal could be improved 89-fold. Then a specific aptamer-based sensing strategy was constructed by grafting capture DNA on Au surface, followed by hybridizing with aptamer . Meanwhile, an excellent catalyst, Ag NPs was labeled on aptamer to activate oxygen reduction reaction , leading to a 13.8-fold enhancement in ECL signal at the anode of BPE. Under the optimal conditions, the biosensor exhibited a wide linear range of 0.10 pg/mL to 10 ng/mL for FB 1 detection. Meanwhile, it demonstrated satisfactory recoveries for real sample detection with good selectivity , making it to be a convenient and sensitive device for mycotoxin assay.
研究领域:
分析化学
·
食品安全
·
生物技术
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Binbin Zhang,Mengying Qiao,Weichen Xu,Baorong Hou
Water-repellent and interfacial non-wetting superhydrophobicity has great potential to address corrosion/icing-induced material-deterioration problems. Herein, an all-organic superhydrophobic coating was constructed using facile and substrate-independent spray-coating method based on PTFE and PDMS . FE-SEM, EDS, and XPS techniques were used to analyze the surface topographies and chemical compositions. The coating exhibits superior anti-fouling and self-cleaning properties against various liquid and solid contaminants due to the synergic effect of low surface energy and hierarchical structures. The EIS and potentiodynamic polarization results show improved charge transfer resistance ( R ct ), positive shifted corrosion potential ( E corr ), and decreased corrosion current density ( I corr ), implying significantly enhanced anti-corrosion performance with 99.83 % inhibition efficiency. Besides, the delay rate of ice-freezing time of the coating is 232 % at −5°C, 137 % at −10 °C and 204 % at −15 °C compared with uncoated Q235 substrate respectively. The ice adhesion strength of the coating accounts for only 6.55 % at −5°C, 7.03 % at −10 °C and 9.35 % at −15 °C than that of the bare Q235 carbon steel, demonstrating ultra-low ice adhesion force and anti-icing capabilities. The hygroscopic and deliquesce behaviors of NaCl salt particles reveal an intriguing salt-deliquescence self-coalescence phenomenon and prospective anti-corrosion mechanism for superhydrophobic materials in high-humidity marine atmospheric environments.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 20
·2200512
·
IF 6.389
Ning Liu,Linna Shan,Zhensheng Yang,Yue Sun,Hao Li,Zhiying Wang
Oriented wrinkled surfaces play a vital role in the preparation of functional components. However, existing methods for the fabrication of oriented wrinkle patterns are often limited by specific equipment (e.g., high vacuum systems) and cumbersome processes. In this study, an approach utilizing shrinkage controlled cracking method is proposed to introduce prefabricated topographic patterns on flat semi-crosslinked polydimethylsiloxane (Semi-PDMS) substrate for modulating anisotropic release of the interlaminar lateral stresses, where the crosslinking-induced volumetric shrinkage from the Semi-PDMS substrate provides the driving force for developing and stabilizing oriented surface wrinkle formation; followed by thickening polydopamine (PDA) capping layer to increase the orientation degree of wrinkles. Moreover, the evolutionary mechanism of oriented wrinkles on the PDA/Semi-PDMS composite surface are demonstrated. The materials used in the reported method are low cost and environmentally friendly, and the preparation process is simple and green without the need for extreme conditions or strong solvents, which can be scaled up to large-scale fabrication. According to the biocompatibility, high stability, and reactivity of polydopamine, the prepared oriented wrinkles may find potential applications in electronic skin, enhancement of cell alignment, flexible and stretchable electronics, and as structured templates for surface arrays.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2016
·
IF 2.632
Kaiqiang Zhang,Xiaohui Li,Yunhui Zhao,Kongying Zhu,Yancai Li,Chao Tao,Xiaoyan Yuan
Low surface energy materials have been extensively investigated for building icephobic surfaces in recent years. Polydimethylsiloxane (PDMS) and fluoropolymers have been introduced to this field, while control of their structures is of importance to produce deicing surfaces. In this work, fluorinated methacrylate block copolymers containing polyhedral oligomeric silsesquioxane (POSS) moieties were synthesized by reversible addition-fragmentation chain transfer polymerization and transformed into thiolated-copolymers by aminolysis to adjust the self-assembly and modify surface morphology. The icephobic coatings were developed via UV-curable thiol-ene reaction with tunable amounts of thiol-modified POSS-fluorinated methacrylate diblock copolymers with vinyl-functionalized PDMS and thiol-functionalized PDMS. Characterizations of atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle showed the evidence of the POSS-fluorinated diblock copolymers on the outmost surface of the coatings. Owing to the crystallization of perfluoroalkyl side groups, the coatings containing thiol-modified poly(methacrylisobutyl POSS)- b -poly(2-perfluorooctylethyl methacrylate) ( S17F ) exhibited excellent icephobicity, and water droplets could rebound completely on all S17F -containing surfaces at both normal and tilt modes before freeze even at −15 °C. The ice shear strengths of the prepared UV-cured coatings were about one-eighth of that on bare aluminum surface, while the coating containing 5% S17F achieved the lowest ice shear strength of 105 ± 12 kPa. It was found that the icephobicity of these coatings were attributed primarily to the synergistic effect of the POSS-fluorinated methacrylate diblock copolymer and the PDMS component.
研究领域:
材料科学
·
表面化学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Dongyi Yang,Cheng Chen,Jiqing Xie,Yuanqing Ye,Zhi Zhou,Huiyun Liao,Zhong Yao
The application of pervaporation technology in the recovery of aromatic compounds from water faces the challenge of low performance. In this paper, a uniform zeolitic imidazolate framework/polydimethyl-siloxane (ZIF-8/PDMS) composite membrane was fabricated by means of contra-diffusion crystallization and a casting method in sequence. The diffusion time was optimized to be 24 h. ZIF-8/PDMS showed improving performance to pure PDMS . The permeation flux of linalool, neral, and geranial in ZIF-8/PDMS increased by 73.3%, 110.9%, and 106.0%, respectively; and the separation factors were also improved. The separation effect of neral (cis-citral) was much better than that of geranial (trans-citral), suggesting the potential enantioselectivity. In ternary model system, the separation of citral (neral and geranial) was competitively restrained by the presence of linalool. ZIF-8/PDMS also showed good performance in real lemon oil. After treatment for 9 h, the recovery rates of linalool, neral and geranial were 97.20%, 96.15%, and 92.56%, respectively.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICS EXPRESS
·
2024
·Vol. 32
·期 20
·35321-35330
·
IF 3.2
Yuchen Yin,Yuchen Yin,Yang Liao,Jijun Feng,Wenhai Gao,Wenhai Gao,Shaoming Xie,Cong Chen,Ke Liu,Rui Gao,Rui Gao,Yujie Peng,Yuxin Leng,Yuxin Leng
Superhydrophobic surfaces have garnered significant attention for their wide-ranging applications in self-cleaning, anti-icing, and liquid manipulation. However, it remains a daunting challenge to precisely and rapidly fabricate superhydrophobic microstructures with the desired layout. In this study, Polydimethylsiloxane (PDMS) microstructures were replicated from a laser-structured glass mold fabricated by laser-induced deep etching (LIDE). The deep microholes/grooves with the desired layouts and geometrics were rapidly fabricated into the glass mold by picosecond laser modification followed by wet etching. The well-arranged high-aspect-ratio micropillars/wall arrays were achieved on a PDMS surface by a subsequent soft lithography process. The influences of the aspect ratio and spacing of the micropillars on the hydrophobicity and transparency of the PDMS surface were investigated. Both good superhydrophobicity and high transparency can be simultaneously achieved by the use of optimized micropillar geometrics. Transmittance loss due to the presence of the high-aspect-ratio micropillars can be less than 1% over the wavelength region measured (300–1100 nm). Furthermore, to enhance the durability and robustness of the micropillars, protective interconnected microwalls were demonstrated without compromising hydrophobicity and transparency. This research opens up the possibility of rapid manufacturing of superhydrophobic and transparent surfaces with flexible layouts of microstructures.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Song Zhang,Wei Li,Wei Wang,Chengrong Qin,Shuangfei Wang
Multi-mode liquid handling system integrated different types of liquid behaviors on super-wetting surfaces has attracted great interest from both academia and industries due to their promising applications in the field of surface science. Herein, a paper-based dual-mode droplet manipulation system that combines oil/water separation and time-delay droplet switch was designed by spray-coating α-cellulose 10-undecenoyl ester (CUE) particles on filter paper with further “reverse sizing” by polydimethylsiloxane (PDMS) based on capillary action and “like dissolve like” principle. Such novel binding technique leaded to a remarkably robust superhydrophobicity of the as-fabricated PDMS@CUE-coated paper (PDMS@CCP), including outstanding mechanical resistance and environmental durability. In particular, the front side of PDMS@CCP displayed excellent separation efficiency (higher than 99.89%) for light oil/water mixture, heavy oil/water mixture, and even surfactant-stabilized water-in-oil emulsion. Interestingly, based on the hydrophobicity of the back side of PDMS@CCP and the intrinsic hygroscopicity of paper itself, a time-delay droplet switch was simply achieved in between by the Laplace pressure derived from the curvature difference of the droplet on two paper surfaces with surface energy gradient. By adjusting the width of the filter paper and the volume of the droplet, the switch time could be rationally modulated between 0.8 and 202.1 s. The designed functional paper would enrich the application field of the liquid manipulation system.
研究领域:
材料科学
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Liujun Song,Jin Hu,Xiaofeng Huang,Li Zhong,Yongbing Pei,Lianbin Wu,Xinya Zhang
Inspired by the compound eye superhydrophobic phenomenon, the hemispherical particles with a concave (HPCs) were prepared and self-assembled into a similar array structure. To improve the roughness and mechanical durability properties, the nanoscale Fe2O3 nanorods modified by 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FSA) were coated on the particles (HPC@Fe2O3) and then the SiO2 particles modified by FSA were deposited onto HPC@Fe2O3 arrays to mimic the nanoscale nipples of a compound eye. The obtained arrays show excellent superhydrophobic properties (the contact angle is 175°, and the sliding angle is 3.5°), which are mainly attributed to the stable micro/nanoscale air-cushion structure’s greatly reduced contact of water drops. After that, the self-healable poly(dimethylsiloxane) (NH2-PDMS) elastomer was introduced as a substrate, and the composite structure can be self-healed in 2 min at room temperature after being damaged, which greatly enhances the lifespan of the superhydrophobic film. This kind of biomimicry material combining the superhydrophobic with the self-healable property has promising applications in artificial skins, wearable devices, and so on.
研究领域:
材料科学
·
仿生学
✓ 已验证
产品关联
DOI
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Chuxiong Qiu,Wei Xiong,Helong Zhang,Rong Zhang,Ivan P. Parkin,Shengwu Wang,Lee Li,Junwu Chen,Zhi Chen,Arnauld Robert Tapa,Albert Trokourey,Weibing Zhou,Xiujian Zhao,Yi Xie
Superhydrophobic (SH) and superamphiphobic (SAP) coatings have been viewed as an alternative to conventional hydrophobic room temperature vulcanizing (RTV) silicone rubber coatings in anti-pollution flashover application. However, being one of the most important properties in RTV-based anti-flashover materials and devices, the hydrophobicity transfer property was rarely documented for SH and SAP coatings, which restricts their practical applications in environments with heavy contamination. Herein, we propose for the first time a superhydrophobicity transfer effect in superwetting (SW) coatings (e.g., SAP and SH coatings) containing low-surface-energy molecules (e.g., polydimethylsiloxane (PDMS)) as a migratory reagent. When the surface is stained by artificial simulated pollutants, PDMS molecules can migrate from the coating to the contamination layer, followed by a surface modification. Through this process, the surface wettability of the contaminant layer gradually evolves from superhydrophilicity to hydrophobicity, and finally to SH state. This evolution is investigated in relation to the amount and species of migratory reagents, migration time, pollution grade, and pollutant species. The superhydrophobicity transfer effect offers the coated glass insulators an outstanding anti-pollution flashover strength . This work can provide a novel and universal protocol to realize a superhydrophobicity transfer property in SW coatings, which may stimulate further investigation and applications in not only anti-pollution flashover but also other fields such as anti-fouling and anti-icing.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yue Zhu,Yajie Ding,Jianqiang Wang,Haibo Lin,Fu Liu,Chuyang Y. Tang
Efficient oil/water recovery from emulsions is a challenging task for membrane separation in terms of perm-selectivity and long-term stability. Oil fouling on membrane surface and intrapore disables the efficient recovery of water and oil, limited by size exclusion. Herein, this work proposes an aggregation-release demulsification mechanism to address the fouling issue and achieve efficient oil and water recovery, respectively. Specifically, an ultra-thin sub-10 nm polydimethylsiloxane (PDMS) shell layer was constructed on a hydrophilic polyacrylonitrile (PAN) nanofiber core surface through the hydrolysis and condensation between vinyltriethoxysilane (VTES) and dimethoxydimethylsilane (DMS). The aggregation-release demulsification process on the lipophilic and slippery PDMS surface could be proposed as, oil droplet adsorption, spread out, aggregation and slippery, which vacates the membrane pore space and makes way for water flow. Thus, both purified water and aggregated oil phase could be easily recovered from the permeates. The prepared membrane enabled continuous operation without cleaning. The membrane shows high water permeance (2800 L m -2 h −1 bar −1 ), high emulsion treatment capacity (8000 mL), and high oil (∼85 %) and water (nearly 100 %) recovery. The strategy reported in the current study might offer an opportunity for advancing practical applications of membrane separation for valuable oil products from emulsions.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Xiuquan Li,Li Zhang,Zhongqing Yang,Ziqiang He,Peng Wang,Yunfei Yan,Jingyu Ran
In engineering applications, moisture is inevitable in waste gas containing VOCs, which leads to the problem of poor adsorption performance of activated carbon under humid conditions. To improve the adsorption selectivity of VOCs, walnut based activated carbon was modified by polydimethylsiloxane (PDMS) and characterized by FTIR analysis, SEM&EDS and the static water contact angle. Dynamic adsorption column experiments were conducted and Yoon-Nelson (Y-N) model was used to identify adsorption effect for benzene on ACs when relative humidity was 0%, 30%, 60%, 90%. The results show that the activated carbon modified by PDMS increases Si and O elements and forms a hydrophobic coating on the surface in the form of Si-O-Si group. The hydrophobicity changed positively with the increase of modification temperature, but the collapse and blockage of pores were more serious. Adsorption capacity of hydrophilic Bare-AC decreased by 55.9% when the relative humidity increased from 0% to 90%. However, the activated carbon covered with PDMS modified at 200 °C decreased by only 19.3%. Changes in the mass transfer rate of benzene during adsorption under different conditions have also been discovered. This study provides a method to solve the problem of serious deterioration of adsorption capacity of adsorbents in wet environment.
研究领域:
环境工程
·
材料科学
✓ 已验证
DOI
高影响因子
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
·
2021
·Vol. 38
·期 7
·2100019
·
IF 3.31
Yupeng Sun,Huiling Tai,Zhen Yuan,Zaihua Duan,Qi Huang,Yadong Jiang
Flexible pressure sensors are widely demanded in human care systems. A simple and effective strategy for sensor fabrication can markedly promote its application. Herein, a facile strategy is employed to prepare a flexible capacitive pressure sensor with a polydimethylsiloxane microbeads-modified dielectric layer. Owing to the microbeads structure, the proposed sensor achieves a sensitivity of 0.048 kPa −1 in the range of 0–10 kPa with a wide dynamic range (up to 100 kPa). The sensitivity is nine times higher than that of the planar structure. Moreover, the microbeads structured sensor obtains a low limit of detection (0.2 kPa), fast response time (120 ms), and good stability (variation lower than 3.30% after 1000 loading/unloading cycles at 20 kPa). The finite-elemental analysis reveals that the microbeads structure is critical to enhance the performance of sensors. Finally, the pressure sensor is successfully applied to detect touch signal, joints movement, and breathing, exhibiting its promising prospects as smart wearable devices. Furthermore, the strategy may provide a new idea for the microstructural design of capacitive pressure sensors.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）