Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 7
·3801-3807
·
IF 7.443
Lianyi Xu,Dandan Zhu,Xuemin Lu,Qinghua Lu
By mimicking nature, the preparation of artificial self-cleaning surfaces has gradually matured both in theory and technology, but their actual application has been hampered by enormous difficulties. The main challenge is that their design principle (i.e., their requirement for micro- and nano-structures) is difficult to reconcile with the need for coating strength and transparency. Here, we have exploited a porous structured silica coating with the help of an electrodeposited porous PEDOT template. This porous silica coating not only provides the requisite roughness for the final superhydrophobic surface, but also has a low refractive index, thereby enhancing the transparency of the silica coating. After fluorination, a highly transparent, thermally and mechanically stable superhydrophobic coating was obtained. The silica coating is found to withstand tests of harsh environments, such as mechanical resistance and ultra-high hydraulic pressure tests. This large-area superhydrophobic coating has great potential for use in solar cells and self-cleaning windows.
研究领域:
材料科学
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表面工程
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纳米技术
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电化学
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DOI
高影响因子
Journal of Food Measurement and Characterization
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2024
·Vol. 18
·期 4
·2561-2572
·
IF 2.9
Liu Junwei,Wu Yuqing,Liu Chenchen,Cai Yan,Zhang Rui,Lu Yang
Based on the new hapten of fipronil, an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and time-resolved fluorescent immunochromatographic assay (TRFICA) for the determination of fipronil were developed. The sensitivity (IC 50 ) of the ic-ELISA method was 2.33 ± 0.14 ng mL −1 (n = 3), and the limit of detection (LOD) (IC 20 ) was 0.27 ± 0.02 ng mL −1 (n = 3). The cross-reaction rates of the three fipronil metabolites were all higher than 66.7%, and those of the three analogs were no more than 0.05%. The TRFICA was optimized with a handheld reader. The LOD was 0.862 ng mL −1 (n = 3). In this study, the pretreatment methods of samples such as Chinese cabbage, spinach, apple and egg, were explored. Methanol and acetonitrile were used to extract different food samples and the diluents were optimized. Three concentration levels in the spiked food samples were detected by the two methods. The range of recovery was 88.65–116.32% for ic-ELISA and 95.48–112.61% for TRFICA. In this study, the accuracy of the two methods was also judged by testing commercial quality control samples. The results showed that the accuracy was 83.75%–113.33% for ic-ELISA and 98.33–107.13% for TRFICA.
研究领域:
分析化学
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食品安全检测
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Guorong Hu,Jilin Wu,Ke Du,Zhongdong Peng,Ming Jia,Hao Yang,Yanbing Cao
The surface-fluorinated Li 4 Ti 5 O 12 nanowires/reduced graphene oxide composite is synthesized through a hydrothermal procedure. Lithium ion transport is promoted by forming a special morphology of lithium titanate nanowires, meanwhile, electronic transmission is facilitated by surface fluorination and conductive network of graphene coating. These three kinds of synergistic effects greatly improve the rate performance of lithium titanate . The surface-fluorinated Li 4 Ti 5 O 12 nanowires/reduced graphene oxide composite exhibits high specific capacities (167.5 mAh g −1 at 1 C and even 132.6 mAh g −1 at 10 C) and good cyclic stability (95% capacity remain after 300 cycles at 5 C). The influences of surface fluorination and graphene coating on electrochemical performance of lithium titanate are investigated in detail in terms of reversible capacity, cyclability and rate capability. Its excellent electrochemical properties make it become possible to be a potential anode material for high-rate lithium-ion batteries applied in high power facilities.
研究领域:
材料科学
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电化学
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纳米科技
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能源存储
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锂离子电池
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2018
·
IF 2.955
Yuhua Dong,Siyi Li,Qiong Zhou
The self–healing capability of epoxy coatings modified with coaxial core–shell nanofibers loaded with the corrosion inhibitor 2–mercaptobenzothiazole (MBT) was investigated using electrochemical techniques. The polyvinyl alcohol/polyvinylidene fluoride core–shell nanofibers were prepared by coaxial electrospinning. Electrochemical impedance results showed that the MBT–loaded coaxial nanofibers improved the barrier properties and decreased the corrosion activity of the coatings. Results of the Scanning Kelvin Probe technique revealed that the MBT–loaded coaxial nanofibers healed corrosion over artificial defects exposed to NaCl electrolytes. These results indicate that adding MBT–loaded coaxial nanofibers to epoxy coatings is a promising strategy toward the development of self–healing epoxy coatings.
研究领域:
材料科学
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高分子化学
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腐蚀与防护
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表面工程
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功能材料
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2022
·Vol. 6
·期 3
·e12351
·
IF 13.443
Qiyu Wang,Xiangqun Xu,Bo Hong,Maohui Bai,Jie Li,Zhian Zhang,Yanqing Lai
Quasi-solid-state lithium metal battery is a promising candidate for next generation high energy density and high safety power supply. Despite intensive efforts on electrolytes, uncontrolled interfacial reactions on lithium with electrolyte and patchy interfacial contacts still hinder its practical process. Herein, we bring in rationally designed F contained groups into polymer skeleton via in-situ gelation for the first time to establish quasi-solid-state battery. This method achieves a capacity retention of 90% after 1000 cycles at 0.5C with LiFePO 4 cathodes. The interface constructed by polymer skeleton and reaction with –CF 3 lead to the predicted solid electrolyte interface species with high stability. Furthermore, we optimize molecular reactivity and interface stability with regulating F contained end groups in the polymer. Comparisons on different structures reveal that high performance solid stable lithium metal batteries rely on chemical modification as well as stable polymer skeleton, which is more critical to construct robust and steady SEI with uniform lithium deposition. New approach with functional groups regulation proposes a more stable cycling process with a capacity retention of 94.2% at 0.5C and 87.6% at 1C after 1000 cycles with LiFePO 4 cathodes, providing new insights for the practical development of quasi-solid-state lithium metal battery.
研究领域:
电化学
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材料科学
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能源存储
·
界面化学
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高分子化学
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DOI
高影响因子
CHINESE MEDICAL JOURNAL
·
2025
·
IF 7.3
Jia Pengyu,Wang Kui,Cheng Yiqin,Zhang Yan,Lu Yuying,Sun Haodong,Zhang Shuyue,Fan Pei,Zhang Yuanyuan,Yang Liufei,Wang Ning,Lu Haixia,Chen Xinlin,Liu Yong,Wei Haidong,Zhang Pengbo
Plain Language Summary Background: Sevoflurane impairs neurogenesis and cognitive function in the developing brain; however, the underlying mechanisms remain unclear. This study aimed to investigate the role of fatty acid β-oxidation (FAO) in neural stem/progenitor cells (NSPCs) as a potential factor in sevoflurane-induced neurogenesis inhibition and cognitive deficits. Methods: NSPCs, NE-4C cells, and postnatal day 7 (PND 7) rats were exposed to sevoflurane. Cell viability was measured using the methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay. Neurogenesis was assessed by immunohistochemistry. Apoptosis was detected via terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL). Cognitive function was tested with the Morris water maze. Lipid metabolism profiles were analyzed through lipidomics. Message RNA (mRNA) expression levels of key FAO enzymes and the major carnitine transporter were quantified by real-time reverse transcription polymerase chain reaction (RT-qPCR). Protein expression of carnitine palmitoyltransferase 1a (CPT1a) and nuclear peroxisome proliferator-activated receptor α (PPARα) was examined by Western blotting. CPT1a enzymatic activity was determined using a biochemical assay. FAO activity was measured with the FAOBlue assay. Results: Sevoflurane exposure impaired neurogenesis and cognitive function. In NSPCs, sevoflurane exposure induced extensive alterations in lipid metabolism intermediates, inhibited the mRNA expression of acyl-CoA oxidase 1 ( ACOX1 ), acyl-CoA oxidase 3 ( ACOX3 ), hydroxyacyl-CoA dehydrogenase beta subunit ( HADHB ), CPT1a , carnitine palmitoyltransferase 2 ( CPT2 ), acyl-CoA dehydrogenase short-chain ( ACADS ), and solute carrier family 22 member 5 ( SLC22A5 ), suppressed FAO activity, reduced CPT1a expression and activity, and decreased PPARα levels in the nucleus. Enhancing FAO activity in NSPCs ameliorated the negative effects of sevoflurane on neurogenesis. Overexpression of CPT1a rescued the sevoflurane-induced inhibition of FAO activity and neurogenesis in NE-4C cells. Pretreatment with palmitoylethanolamide (PEA), a PPAPα agonist, increased both the nuclear content of PPARα protein and the expression of CPT1a in NSPCs and rat hippocampus after sevoflurane exposure. Furthermore, pretreatment with PEA or the CPT1a substrate carnitine rescued sevoflurane-induced damage to FAO activity in NSPCs, neurogenesis, and cognitive function. Conclusion: Sevoflurane impairs neurogenesis and cognitive function by suppressing FAO in NSPCs of the developing brain. Boosting FAO activity in NSPCs could be a potential strategy to prevent sevoflurane-induced cognitive deficits. Plain Language Summary This study explored how sevoflurane, an anesthetic, affects brain development by impairing neurogenesis and cognitive function. Researchers found that sevoflurane disrupts fatty acid β-oxidation (FAO) in neural stem/progenitor cells (NSPCs), leading to changes in lipid metabolism and reduced expression of key enzymes. Enhancing FAO activity, either by overexpressing certain proteins or using compounds like palmitoylethanolamide (PEA) and carnitine, helped mitigate these negative effects. This suggests that targeting FAO in NSPCs could be a promising approach to counteract sevoflurane-induced cognitive deficits in the developing brain. Text is machine generated and may contain inaccuracies. FAQ
研究领域:
神经科学
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发育生物学
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麻醉学
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代谢学
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干细胞研究
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Jiayao Wang,Jieqing Shen,Jiahui Shi,Yongjin Li,Jichun You,Fenggang Bian
In this work, high-performance PVDF separators have been successfully fabricated for lithium-ion batteries (LIBs) based on crystallization template in PVDF/PBSU blends. The crystallization of PVDF produces co-continuous structures of crystalline phase and amorphous phase . On one hand, the continuous state of PBSU enables its removal via selective solvent extraction , yielding 3D interpenetrated nanochannels which have been confirmed with the help of X-ray imaging technology. On the other hand, the continuous PVDF crystal framework contributes to superior mechanical performance and heat resistance of resultant separator, playing crucial roles in the inhibition of Li dendrite growth and improvement of LIBs safety. The optimal specimen of PVDF-30 (from PVDF/PBSU 30/70) exhibits higher discharge capacity (135.5 mA h g −1 ), higher coulombic efficiency (∼99.9% after 200 cycles) and enhanced cycle stability relative to the reference (commercial polypropylene separator). Such a significant improvement can be attributed to the combination of excellent connectivity of diffusion channels, outstanding mechanical performance and higher electrolyte uptake resulting from stronger polarity of PVDF. Our results provide a novel strategy for fabricating PVDF separators with superior performances used in lithium-ion batteries.
研究领域:
材料科学
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电化学
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高分子物理
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能源存储
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电池技术
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纳米结构调控
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 36
·18616-18625
·
IF 14.511
Xiukun Liu,Xu Xu,Fangjia Zhang,Xiangchao Ge,Haifeng Ji,Yuqi Li,Shaorong Lu,Zhen Wen
A sustainable, reliable and self-powered anti-corrosion method for metallic structures is key to improving the operation stability and service life of equipment. In this work, a series of durable superhydrophobic fluorinated silica (F-SiO2)/epoxy resin (FE) coatings with good corrosion resistance were prepared via a simple spraying method, which were further used to fabricate a FE based triboelectric nanogenerator (FE-TENG). A synergistic anti-corrosion system for self-powered cathodic protection constructed using the superhydrophobic FE coating and a water wave-driven FE-TENG was then proposed. In a 3.5 wt% NaCl solution, the corrosion potential (Ecorr) of an aluminum (Al) sheet protected by the FE-TENG self-powered cathodic protection was slightly decreased by 80 mV. However, when the Al sheet was coated with a FE superhydrophobic coating, the Ecorr was significantly reduced by 460 mV under FE-TENG protection. Notably, the Ecorr of 304 stainless steel protected by the synergistic anti-corrosion system was dramatically decreased by ∼745 mV. Furthermore, an application in marine corrosion protection was demonstrated by using a float-like spherical FE-TENG. This work demonstrates a cost-effective and large-scale strategy for preparing a superhydrophobic FE coating, using which a self-powered synergistic anti-corrosion system is built for effectively protecting metals from corrosion.
研究领域:
材料科学
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腐蚀与防护
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纳米能源
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表面工程
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功能材料
✓ 已验证
DOI
高影响因子
COLLOID AND POLYMER SCIENCE
·
2024
·Vol. 302
·期 5
·819-828
·
IF 2.2
Ji Xinyuan,Yang Zhe,Fang Jiahui,Hu Sheng
In this study, a novel molecularly imprinted polymer (MIP) was synthesized with attapulgite (ATP) and acrylamide (AM) and ethyl methacrylate (MMA) for controlled release carrier of 5-fluorouracil (5-FU). The MIPs (PAM-PMMA) were characterized by XRD, FESEM, HRTEM, and FTIR. The drug loading and in vitro controlled release ability of MIP on 5-FU was investigated by adsorption property analysis and in vitro release analysis. MIPs (PAM-PMMA) reached a maximum drug loading of 12 mg/g and a maximum release of 80% at an ATP dosage of 0.2 g (0.4%), an initial concentration of 5-FU of 100 mg/L, and an adsorption time of 240 min. Cytotoxicity analysis showed that the maximum inhibition of cells could reach 25% at 72 h of cell culture time under the above conditions. The results showed that MIPs synthesized with ATP as the substrate and AM and MMA as the functional monomers were successfully synthesized and could be used as a drug delivery system for 5-FU. Graphical
研究领域:
材料科学
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高分子科学
·
药剂学
·
纳米技术
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2018
·
IF 2.906
Bo Lin,Jian Chen,Zeng-Tian Li,Fu-An He,De-Hao Li
In this work, the fluoroalkylsilane-modified SiO 2 nanoparticles (NPs) were immobilized on the polyurethane sponges by a highly efficient drop-coating method using different polymers including poly(vinylidene fluoride), poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorotrifluoroethylene), polystyrene , and polyurethane as the adhesives to achieve the superhydrophobic modification of the polyurethane sponges for oil-water separation. The successful fluoroalkylsilane modification for the SiO 2 NPs was confirmed by TEM, SEM , FITR, XPS, and TGA. Furthermore, the surface-modified polyurethane sponges were investigated by SEM and two-dimensional EDS mapping. The contact angles of the surface-modified polyurethane sponges were in the range of 151.6°–154.3°, which confirmed the realization of the superhydrophobic modification for the polyurethane sponges. The demonstration experiments showed that the resulting surface-modified polyurethane sponge could effectively remove oil from the oil-water mixture by direct absorption or gravity-driven filtration. Moreover, the surface-modified polyurethane sponges possessed not only high absorption capability for different oils including peanut oil, pump oil, and silicone oil but also good reusability . We believe that such novel surface-modified polyurethane sponges might be potential candidates for the oil-water separation.
研究领域:
材料科学
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环境工程
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纳米技术
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表面化学
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分离科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Decai Huang,Sisi Liang,Dejian Chen,Jie Hu,Kunyuan Xu,Haomiao Zhu
The emerging applications of near-infrared (NIR) spectroscopy technology in medicine and food security call for compact and efficient NIR light source such as NIR phosphor converted LEDs (pc-LED). Currently, most of the NIR phosphors suffer from low photoluminescence (PL) quantum yield and poor thermal or chemical stability. Herein, a fluoride garnet NIR Na 3 Al 2 Li 3 F 12 :Cr 3+ phosphor was successfully synthesized via coprecipitation method. It can be excited efficiently by blue or red light and shows a broad emission band covering 650–1000 nm (bandwidth of ~110 nm) with a PL quantum yield of 78%. The fine electronic structure of Cr 3+ ions in the host was revealed by the measurement of temperature-dependent (8–300 K) excitation and emission spectra analysis. Particularly, at 423 K, the Na 3 Al 2 Li 3 F 12 :5%Cr 3+ sample retained ~99% of the PL intensity at room temperature, exhibiting excellent PL thermal stability. A NIR pc-LED was fabricated by combining the Na 3 Al 2 Li 3 F 12 :5%Cr 3+ phosphor with a commercial blue LED chip, and radiant flux of 14.3 mW in NIR region was obtained at 60 mA drive current. Furthermore, the penetration of NIR light generated by this pc-LED in chicken breast was reached. The results suggested that Na 3 Al 2 Li 3 F 12 :Cr 3+ is a promising candidate for broadband pc-LED in NIR spectroscopy applications.
研究领域:
材料科学
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光学工程
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生物医学光子学
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半导体器件
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分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Zuocheng Luo,Qingfeng Zhang,Wei Xie,Tong Yuan,Qisheng Zang,Ning Wang,Hanxiao Fan,Shuhong Xie,Xiaoping Ouyang
Potassium ion hybrid capacitors (PIHCs) have attracted widespread attention as combining the advantages of potassium ion batteries (PIBs) with supercapacitors . However, the sluggish kinetics caused by the large radius of K + hinder the practical application of PIHCs. Herein, we synthesized a boron and fluorine co-doping interlaced network porous carbon nanofibers (BF-PCNFs), which was used as the freestanding anode of PIHCs the freestanding anode of PIHCs to alleviate large volume expansion and increase conductivity. Benefiting from the B, F co-doping and porous interlace nanostructure of BF-PCNFs, the anode shows 185 mA h g −1 under a load of 12.6 mg cm −2 , a reversible capacity of 176 mA h g −1 at 1000 mA g −1 after 6000 cycles, and the capacity retention from 100 mA g −1 to 5000 mA g −1 is 62%. Furthermore, the PIHCs based on BF-PCNFs as anode and activated carbon as cathode exhibit an energy density of 87 Wh kg −1 and a power density of 393 W kg −1 . The capacity retention is as high as 78% over 4000 cycles. Considering the exceptional rate performance, long cyclability and high-mass-loading, our work may supply a new strategy for designing novel energy storage devices with outstanding performance.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米科技
·
功能材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）