JOURNAL OF APPLIED POLYMER SCIENCE
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2022
·Vol. 139
·期 39
·e52937
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IF 3.057
Hao He,Qiang Liu,Bing-Bing Gao,Shui-Dong Zhang,Hong-Bing Chen
In order to overcome the hydrophilic problem of aerogels based on soluble polymer, the transition of aerogel composites from hydrophilic to hydrophobic was achieved by grafting 1H, 1H, 2H, 2H-Perfluorodecyltrimethoxysilane (FAS). Simply immersing in FAS ethanol solution and then ambient drying, this method is universal and efficient, we successfully achieved the soluble polymer aerogels hydrophobic transition. Taking polyvinyl alcohol (PVOH)/SiO 2 as an example, the changes of structure and properties of aerogels before and after modification were characterized in detail. It was proved that FAS was successfully grafted and ethanol evaporation had little effect on the microstructure of aerogel. The resulting aerogels possess very good hydrophobicity, with water contact angle of up to 147.5° (3 wt.% FAS). The aerogel exhibits good stability in maintaining hydrophobicity in a harsh environment, such as in extreme pH and temperature. We introduced a universal method for hydrophobic modification, which is of great significance for the practical application of aerogels.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Shinan Xu,Guodong Kang,Bihai Chen,Yunhao Li,Xingming Jie,Yiming Cao,Xiaoyan Fu,Wu Kuang,Ning Cao,Haijun Yu
In this study, an innovative strategy of fabricating Janus hollow fiber membrane to produce microbubbles for enhancing CO 2 removal was proposed. The polyvinylidene difluoride (PVDF) hollow fiber membrane was prepared using two different hydrophilic dopes followed by modification with 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (FAS). The contact angle of the Janus hollow fiber membrane was 37° for the outer layer and 122° for the inner layer. Attenuated total reflectance Fourier transform infrared spectrometer (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) were employed to verify the grafting of FAS onto the inner layer of membrane. The unique morphology showing a progressive transition from sponge-like to finger-like pores, extending from the inner to the outer layer, was examined using a scanning electron microscope (SEM); this morphology helped reduce mass transfer resistance. Microbubbles were produced by the prepared Janus hollow fiber membrane at high and consistent fluxes. The CO 2 mass transfer flux reached 5.0 × 10⁻³mol m⁻ 2 s⁻ 1 under the gas-liquid pressure difference of 0.10 MPa. The average size of microbubbles was 75 μm and the CO 2 removal rate was nearly 100 % in CO 2 removal experiments. The Janus hollow fiber membrane developed in this study exhibited good aeration property and application potential in post-combustion CO 2 capture.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jingying Su,Fenghua Su,Han Yu,Zeqi Lin,Jianfang Sun
Superhydrophobic (SHP) materials have great potential for applications in self-cleaning, anti-fouling, anti-corrosion and drag reduction, but their poor mechanical robustness is a fundamental problem that hinders their practical application. In this work, we successfully and rapidly prepared SHP coating with good durability and drag reduction properties by a simple drop-coating technique after chemical modification and physical mixing. We investigated the effects of modification with 1H,1H,2H,2H-Perfluorodecyltriethoxysilane (FAS-17), a low surface free energy material, and the filling content of Poly tetra fluoroethylene (PTFE) on the hydrophobic property of the as-prepared coating. The maximum water contact angle (WCA) and the minimum sliding angle (SA) of the coating were 160.2 ± 0.4° and 5°, respectively. The coating maintained superhydrophobicity after 4.4 m of abrasion with 400 grit sandpaper and 3 h of water impact, indicating its excellent mechanical durability. In addition, it has outstanding self-cleaning and self-repairing properties. Moreover, the coating was innovatively applied to the surface of the chute, because it remarkably reduced the adhesion between the wet foam block and the chute. These findings here provide a novel insight into the design of a robust SHP coating and suggest a new potential application in express sorting industry for drag reduction.
研究领域:
材料科学
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表面工程
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·125095
·
IF 7.5
Zhifan Guo,Chen Wang,Hongwei Liu,Yujia Tong,Kaili Zhao,Xiaohui Ju,Weixing Li
Co-solvent method to precisely reduce the polarity for preparing uniform ZIF-67 nanoparticles. • 17-FAS promotes interfacial compatibility between ZIF-67 and PVDF and increases wetting resistance. • High water flux of 24.7 kg·m −2 ·h −1 with only 3.01% decline rate after 72 h DCMD. Membrane distillation (MD) offers distinct advantages for wastewater treatment, including low operational demands and near-perfect solute rejection. However, its long-term application is severely hindered by issues such as material detachment, membrane deformation, and wetting. Here, a co-solvent-assisted synthesis strategy with n-heptane and methanol was proposed to prepare uniform ZIF-67 nanoparticles. By optimizing the fiber diameter, robust integration of ZIF-67 with the PVDF matrix is achieved. Furthermore, the incorporation of 1 H,1 H,2 H,2H-perfluorodecyltriethoxysilane (17-FAS) significantly improves interfacial adhesion between ZIF-67 and PVDF, effectively preventing particle detachment and reinforcing wetting resistance during prolonged operation. The successful incorporation of ZIF-67 and 17-FAS was confirmed by FTIR and XPS analyses, and SEM and AFM observations revealed the micro-rough morphology of membrane surface. The enhanced mechanical properties and thermal stability of the composite membranes were verified by tensile testing and TGA. The developed ZIF-67@17-FAS/PVDF membrane exhibits a high water contact angle of 156.6° and the permeate flux of 24.7 kg·m −2 ·h −1 with 3.01% decline rate for 3.5 wt% NaCl solution within 72 h of direct contact membrane distillation (DCMD). Remarkably, under a high-salinity condition of 10 wt%, the flux decline rate is only 7.01%, demonstrating outstanding long-term stability. This work provides a promising strategy to overcome the key limitations of MD membranes through synergistic size control, structural optimization, and interfacial engineering. Download: Download high-res image (178KB) Download: Download full-size image
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高影响因子
SURFACE & COATINGS TECHNOLOGY
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2024
·
IF 5.3
Pan Zhang,Changmei Wu,Lan Xie,Bai Xue,Yi Jiang
Considering the current challenges associated with fossil fuel scarcity and ice accumulation on solid surfaces, we propose a sustainable strategy that utilizes solar energy for ice formation, using a superhydrophobic coating possessing photothermal capabilities to tackle the challenges of icing and de-icing. We have successfully integrated the Fe 3 O 4 @SiO 2 @FAS/Ag-rGO composites into an epoxy matrix to create a photothermal superhydrophobic coating. The innovative coating boasts outstanding super-hydrophobicity with a water contact angle of 153.8°, resulting in a 60 μL water droplet experiencing a freezing delay of 1498 s at −20 °C ambient conditions, which is longer than that of pure EP coating. Additionally, the coating exhibits an impressive photothermal effect, raising the surface temperature to 58.8 °C under 1 sun. The coating also demonstrates rapid de-icing capabilities, clearing ice in just 120 s under 40 mW/cm 2 . By leveraging the light-trapping effect, utilizing the plasma resonance of silver, and incorporating a high surface roughness micro-nano hierarchical structure, the coating achieves exceptional photothermal conversion efficiency and anti-icing performance. Moreover, the coating's chemical and mechanical durability enhance its practicality and potential utility across various applications. In conclusion, this innovative superhydrophobic coating with photothermal properties offers a promising solution for various practical applications such as anti-icing and de-icing.
研究领域:
材料科学
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能源科学
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表面工程
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DOI
高影响因子
JOURNAL OF PHARMACY AND PHARMACOLOGY
·
2018
·Vol. 70
·期 6
·778-786
·
IF 2.309
Chen Shipeng,Yang Luo,Feng Jie
ObjectivesTo explore the apoptotic effects and underlying mechanisms of nitidine chloride (NC) in epithelial ovarian cancer.MethodsThe MTT cell proliferation assay was used to detect the inhibitory effects of different concentrations of NC (0, 0.3125, 0.625, 1.25, 2.5, 5 and 10 μg/ml) in SKOV3 ovarian carcinoma cells. The number of apoptotic cells was observed by Hoechst staining and measured by flow cytometry. Quantitative PCR was used to measure the expression of Fas, Fas-associated death domain-containing protein (FADD), caspase-8 and caspase-3. RNA interference (RNAi) was used to determine whether caspase-8 played an important role in NC-induced apoptosis.Key findingsNitidine chloride inhibited the proliferation of SKOV3 cells (IC50 = 2.317 ± 0.155 μg/ml) after 24 h of treatment and induced apoptosis (15.9–64.3%). Compared with the control group, a significant increase in Fas, FADD, caspase-8 and caspase-3 gene expression was observed in the NC-treated groups (P < 0.05). After silencing caspase-8 by RNAi, the antiproliferative activity and pro-apoptotic activity of NC in SKOV3 cells decreased (P < 0.05).ConclusionsOur study showed that NC induced apoptosis in SKOV3 cells by activating the Fas signalling pathway, and caspase-8 played an important role in this process.
研究领域:
肿瘤学
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分子生物学
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细胞生物学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Haifeng Yang,Chuanhao Xu,Weimiao Wang,Pengfei Tang,Xiaodong Li,Shanshan He,Hebin Bao,Shuaishuai Man,Deyun Tang,Xueming Li,Guangcheng Yang,Zhiqiang Qiao
Micro-propulsion underwater technology has been an extensively concerned topic in advanced marine energy systems because of its wide prospects in high-precision prospecting and positioning. Wherein, the design and selection of propellant in energy-supply systems are the key issues to greatly explore its future application. Here, the hydrophobic thermite sticks which contain hydrophobic polytetrafluoroethylene nanoparticles and modified aluminum coated with 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane shells, were fabricated via a simple direct-writing approach. The modified thermite sticks exhibit stable underwater combustion and self-sustained propagation with a small diameter size (0.94 ± 0.05 mm). In-situ observation shows that the underwater reaction process could be divided into three steps: laser-induction, organic decomposition-dissolution, and thermite reaction. The aging results indicate that the thermite sticks demonstrate an excellent storage stability wherever in air or underwater environments. Simultaneously, it is found that its critical energy required to sustain stable underwater combustion is higher than that in air. Most notably, it not only can be used as the fuels for controllable miniature underwater propulsion, but also can be applied as the energy-delivery materials to expand thrust capacity of vehicles by igniting higher impulse explosives, such as CL-20.
研究领域:
材料科学
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海洋工程
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能源技术
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DOI
高影响因子
Advanced Healthcare Materials
·
2024
·
IF 10
Jabeen Farheen,M. Zubair Iqbal,Asim Mushtaq,Yike Hou,Xiangdong Kong
Triple-negative breast cancer (TNBC) is the most common primary tumor of the breast with limited effectual drug availability. Therefore, the aim of the study is to develop an innovative phyto-nanomedicine (PNM) to cure TNBC with the least genotoxicity. Hereinafter, the sea buckthorn’ extracted polyphenols (SBP), combine with metformin (MET), are synthesized as a novel PNM to evaluate its anti-tumor properties, effectiveness, and mechanism of action in TNBC in vitro and in vivo models. The SBP exhibits 16 new kinds of polyphenols that are been reported earlier which regulated cell development, proliferation, and programmed cell death (PCD) effectively. SBP-MET PNM inhibits MDA-MB-231 (47%), MDA-MB-436 (46%), and 4T1 (46%) cell proliferation but does not affect L929 normal murine cell development and successfully induce PCD (73.19%) in MDA-MB-231 cells. Mechanistically, in vivo SBP-MET proteome expression profiling reveals upregulation of proapoptotic Bax protein and activation of Fas signaling pathways convince downstream Daxx and FADD proteins, which further triggers Caspase-3 that prompts apoptosis in human TNBC cells by cleaving PARP-1 protein. Current findings establish innovative highly biocompatible phyto-nanomedicine that has significant potential to inhibit TNBC cell growth and induce regulated cell death (RCD) in vivo model, thereby opening a new arena for TNBC therapy.
研究领域:
肿瘤学
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药理学
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纳米医学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Yao Huo,Wen-jie Ding,Yan-ru Liu,Zhen-tong Li,Ke-yao Dai,Chao Liu,Hai-yu Ji,An-jun Liu
An important micronutrient involved in immune response and antitumor is selenium. LMW-GFP, a polysaccharide extracted from Grifola frondosa seed bodies, has a relatively weak antitumor effect on BGC-823 and MFC cells in vitro , whereas selenium binding to LMW-GFP can significantly increase the in vitro antitumor activity of LMW-GFP. In this study, Se-LMW-GFP was prepared by the HNO 3 -Na 2 SeO 3 method, and the structures of LMW-GFP and Se-LMW-GFP were characterized by UV–visible spectroscopy of absorption, FTIR spectroscopy, and electron scanning microscopy, and these structural analyses showed that selenium was successfully complexed to LMW-GFP. The selenium content of Se-LMW-GFP was measured to be 2.08 % ± 0.08 % by ICP-MS. The anti-tumor activity of LMW-GFP before and after selenium modification was compared by cellular experiments, and the findings indicated that the anti-tumor activity of Se-LMW-GFP was considerably improved over that of LMW-GFP, and inhibited the proliferation of BGC-823 cells and MFC cells through a combination of the Fas/FasL-mediated exogenous death receptor pathway as well as the endogenous mitochondrial pathway. Our results suggest that Se-LMW-GFP not only has great potential for natural health food and anti-gastric cancer drug development but is also a good selenium supplement.
研究领域:
药理学
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肿瘤学
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生物化学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Qijun Duan,Qing Xie,Wei Yang,Lisheng Zhong,Jiankang Zhao,Zhimin Yan,Hongda Yan,Shengwu Wang,Ran Duan
Flashover and dampness deterioration are critical factors threatening external epoxy composite insulation devices, which badly affect the security of high-voltage transmission equipment. The surface of the epoxy composite is vulnerable in insulation. Therefore, it is important to prevent surface insulation failure by constructing a stable and high-performance surface. This article proposes the utilization of coupling agent and plasma to synergistically fluorinate boron nitride nanosheets (BNNS), and simulates the principle of water strider floating to construct a biomimetic self-assembly structure on the surface of epoxy resin (EP). The experimental results indicate that the two-dimensional BNNS grafted with fluorinated segments are subjected to a driving force on the surface of EP, which tends to form a flat self-assembled layer on the surface. This biomimetic structure reduces the interfacial energy between water and EP, improving the hydrophobicity of the material. The contact angle reaches 142.7° when the filler content is 0.8%. Meanwhile, the introduction of fluorinated segments increases the energy required for electronic transition and suppresses the electron emission avalanche along the surface flashover. The negative polarity flashover voltage has increased by 43.99% compared with the unmodified EP. In this study, the surface insulation and hydrophobicity of EP are effectively improved with a lower amount of nanofillers, which has the prospect of further reducing costs and improving the modification effect.
研究领域:
材料科学
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电气工程
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DOI
PubMed
高影响因子
Food & Function
·
2020
·Vol. 11
·期 8
·7217-7230
·
IF 4.171
Konglong Feng,Xiaoai Zhu,Guo Liu,Qixin Kan,Tong Chen,Yunjiao Chen,Yong Cao
Citrus peel essential oil (CPEO) contains abundant volatile compounds and exhibits fragrance properties and beneficial pharmacological effects on humans. Herein, we aimed to investigate the effects of CPEO on the prevention of hypercholesterolemia and hepatic steatosis in high-fat diet-fed rats and identify its possible regulatory mechanisms in lipid metabolism by combining lipidomics with gene expression analysis. CPEO at effective supplementation levels of 0.5% and 0.75% significantly ameliorated hypercholesterolemia and hepatic steatosis, including decreased serum total cholesterol (TC), low-density lipoprotein cholesterol (LDL-c), hepatic TC and triglyceride (TG) levels, and hepatic lipid droplet accumulation. Lipidomics analysis revealed that the total levels of fatty acid (FFA), TG and cholesteryl ester (CE) classes in the liver tissue were remarkably decreased after 0.75% CPEO supplementation some of which (3 TGs and 4 CEs) might emerge as potential lipid biomarkers in response to the effects of CPEO. Furthermore, these lipidomics findings were associated with downregulation of lipogenesis-related genes SREBP-1c, ACC and FAS and upregulation of bile acid biosynthesis-related genes LXRα, CYP7A1 and CYP27A1 in the liver. This study indicated that CPEO could effectively prevent hypercholesterolemia and hepatic steatosis, possibly because of its mediation of lipid and cholesterol homeostasis by altering liver lipid metabolites and regulating lipid metabolism-related genes.
研究领域:
营养学
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分子生物学
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药理学
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产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2017
·Vol. 9
·期 18
·2703-2709
·
IF 1.9
Biao Ma,Song-Fang Xie,Lei Liu,Fang Fang,Zhi-Yong Wu
A crucial challenge in development of robust paper-based analytical devices (PADs) is the lack of sensitivity. Electrokinetic stacking is a kind of unique sample preconcentration for low-abundant charged species, which can be integrated to PADs to enhance the sensitivity. In this work, we bring new insights into the mechanism underlying an electrokinetic stacking technique based on a field amplified stacking (FAS) effect implemented on a simple paper fluidic channel. Here, we reveal that the acid–base titration reaction between the cations/anions in the background electrolyte (BGE) and the OH−/H+ ions from water electrolysis plays an essential role in the development of the electric field gradient. This was experimentally confirmed by changing the BGE type, monitoring the current variation and pH characterization. Based on the new knowledge, the paper-based FAS was successfully extended to stack cationic analytes. Eventually, a model protein of bovine hemoglobin (BHb) in its anion form was 150-fold stacked within 60 s. This work shows that the sensitivity of PADs can be greatly enhanced with effective use of this simple and low cost electrokinetic stacking technique.
研究领域:
分析化学
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生物医学工程
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电泳技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）