JOURNAL OF MATERIALS SCIENCE
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2024
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IF 3.5
Zhang Tongwei,Qin Huijie,Bao Lihong,Dang Bo,Li Jianxi
This paper introduces a novel hybrid material, MoS 2 @Ag@PA, with a core–shell structure aimed at improving the fire safety and critical properties of ethylene vinyl acetate (EVA). The incorporation of 2% of this hybrid material results in a remarkable enhancement in both thermal conductivity and tensile strength of EVA composites, increasing by 52.4% and 22.6%, respectively. Furthermore, the inclusion of 2% of this material leads to a significant reduction in the peak of heat release rate, total heat release, and total smoke production of the EVA composites by 36.2%, 28.1%, and 29.7%, respectively, compared to pure EVA. This indicates a substantial improvement in fire safety, mechanical properties, and thermal conductivity of the EVA composites. The enhanced flame retardancy of the EVA composites is primarily attributed to the synergistic effect of various substances within the hybrid material. Therefore, the design of these hybrids presents a promising approach to enhance the overall performance of EVA.
研究领域:
材料科学
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火灾安全工程
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DOI
高影响因子
Journal of Environmental Sciences
·
2023
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IF 6.9
Senjian Han,Chao Gao,Wenfeng Yan,Yafei Guo,Shiqiang Wang,Tianlong Deng
Radioisotope leaking from nuclear waste has become an intractable problem due to its gamma radiation and strong water solubility. In this work, a novel porous ZnFC-PA/PSF composite sphere was fabricated by immobilization of ferrocyanides modified zinc phytate into polysulfone (PSF) substrate for the treatment of Cs-contaminated water. The maximum adsorption capacity of ZnFC-PA/PSF was 305.38 mg/g, and the removal efficiency of Cs + was reached 94.27% within 2 hr. The ZnFC-PA/PSF presented favorable stability with negligible dissolution loss of Zn 2+ and Fe 2+ (< 2%). The ZnFC-PA/PSF achieved high-selectivity towards Cs + ( K d = 2.24×10 4 mL/g) even in actual geothermal water. The adsorption mechanism was inferred to be the ion-exchange between Cs + and K + . What's more, ZnFC-PA/PSF worked well in the fixed-bed adsorption ( E = 91.92%), indicating the application potential for the hazardous Cs + removal from wastewater.
研究领域:
环境科学
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材料科学
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核废料管理
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DOI
PubMed
高影响因子
RSC Advances
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2019
·Vol. 9
·期 35
·19973-19982
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IF 3.049
Yusif Mohammed Mukhtar,Kaili Wang,Ran Li,Wenwen Deng,Michael Adu-Frimpong,Huiyun Zhang,Kangyi Zhang,Chenlu Gu,Ximing Xu,Jiangnan Yu
Hepatocellular carcinoma (HC) and glioblastoma (GBA) are the most commonly aggressive malignant liver and brain tumors. Based on an established method for the synthesis of amide, two novel analogues (4 and 5) of (S)-perillic acid were synthesized and their structures were affirmed using nuclear magnetic resonance spectroscopic analysis. An MTT cytotoxic assay showed that our derivatives (4 and 5) demonstrated a substantial anti-proliferative effect against HC (HepG2) and GBA (U251) cell lines. Particularly, compound 5 showed growth inhibitory (IC50) effects on U251 (IC50 = 3.10 ± 0.12 μg mL−1) and HepG2 cells (IC50 = 1.49 ± 0.43 μg mL−1), which fall within the acceptable standard recommended by the National institute of cancer (Bethesda, MD, USA) for the selection of anticancer drug candidates. Consequently, we assessed the in vivo antitumor and organ/tissue toxicity of 4, 5 and 5-fluorouracil (5-FU) in hepatoma H22-inoculated mice. The results obtained indicated remarkable tumor growth inhibition with no substantial toxicological effects on the mice and the organs/tissues in the treated groups compared well with the control.
研究领域:
药理学
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肿瘤学
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药物化学
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DOI
PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Xingyan Liu,Jinfeng Zhao,Jie Hao,Ying Zhang,Weiyi Cui,Dawei Lou,Xiyue Wang
The solvothermal approach was used to create a three-dimensional covalent organic framework (TP-PA) using p-phenylenediamine (PA), 1,3,5-triformyl phoroglucinol (TP), and anhydrous ethanol as the solvent. It was utilized as a coating material for needle trap devices (NTD) to determine five polychlorinated biphenyls (PCBs) from milk coupled with gas chromatography (GC). The results displayed that TP-PA presented excellent extraction performance to PCBs owing to its abundant micro/mesopores structure, high specific surface area and good chemical and thermal stability. The proposed needle-type micro-extraction (NTME)-GC method had wide linearity (0.025–200 μg L −1 ) with R 2 ≥ 0.9928, low limits of detection (0.0072–0.0146 μg L −1 ), and good single device repeatability and device-to-device reproducibility with the relative standard deviations (RSDs) below 7.07 %. It was applied to detect five trace PCBs in milk, and satisfactory spiked recoveries were obtained (79.7 %∼96.4 %) with relative standard deviations less than 11.9 %. The above results indicated that the method has excellent application potential for detecting PCBs in food.
研究领域:
分析化学
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环境科学
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食品安全
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材料科学
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2024
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IF 6.3
Huijie Qin,Tongwei Zhang,Lihong Bao,Bo Dang,Jianxi Li
In this study, MXene@Ag@PA hybrids were synthesized using radiation methods and chelation, aiming to enhance the key properties of EVA/MH composites, particularly their flame retardancy. The test results demonstrated that the addition of MXene@Ag@PA hybrids effectively reduced the amount of heat and smoke released during the combustion process of EVA composites. When 2 parts of MXene@Ag@PA hybrids were added, the peak heat release rate (pHRR) of the EVA/MH/2.0MXene@Ag@PA composite was reduced to 233 kW/m², representing a decrease of 78.5% and 63.3% compared to pure EVA and EVA/MH composites, respectively. Additionally, the time to reach the peak heat release rate was delayed to 300–400 s. Moreover, the MXene@Ag@PA hybrids further reduced the total smoke production (TSP) of the EVA composites to 3 m², which is 50% and 38.7% lower than that of pure EVA and EVA/MH composites, respectively. Besides providing significant flame-retardant enhancement to EVA/MH composites, the MXene@Ag@PA hybrids also acted as a radiation sensitizer. At an irradiation dose of 100 kGy, the addition of MXene@Ag@PA hybrids enhanced the cross-linking effect of EVA composites, thereby strengthening their mechanical properties.
研究领域:
材料科学
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聚合物工程
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纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Chao Liu,Yawei Liu,Yongqiang Guo,Chao Wang,Zhen Hu,Chunhua Zhang
In this study, a novel PA-g/co-PVP reverse osmosis (RO) composite membrane with high-hydrophilic, antifouling, high salt rejection properties, was prepared according to the principle of sand-fixing grass effect for pharmaceutical wastewater treatment. N-vinyl-2-pyrrolidone (NVP) was used as a “seed agent” that was seeped into a low cross-linked polyamide (PA) film. A hydrophilic molecular brush of polyvinylpyrrolidone (PVP) grafted on the PA surface (PA-g-PVP) similar to grass growing on sand and a cross-linked copolymer layer of PA and NVP (PA-co-NVP) similar to grass roots distributed in sand, as well as an interlayer cross-linking between PA separation layer and PES ultrafiltration membrane with a highly stable interfacial structure, synchronously occurred through γ-ray radiation. Upon incorporation of 1.0% of NVP, the resultant PA-g/co-PVP membrane achieved 18.8° water contact angle and high flux recovery ratio (FRR) values of 91.23%, 96.28%, and 93.67% for the foulants of bovine serum albumin (BSA), sodium alginate (SA), and sodium dodecyl sulfate (SDS), respectively. The FRR value of pharmaceutical wastewater-polluted membrane after cleaning was 94.30%. The PA-g/co-PVP RO membrane showed outstanding separation stability due to the radiation cross-linking reactions, which limit matrix swelling and interface delamination similar to the action principle of sand-fixing grass. These merits prove that the RO membrane developed in this study can be used in many applications, including small organic molecular wastewater separation.
研究领域:
环境科学
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材料科学
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药学
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产品关联
DOI
高影响因子
Water
·
2024
·Vol. 16
·期 19
·2752
·
IF 3
Weibin Cai,Yuzhe Wang,Yuannan Li,Hong Ye,Fuyuan Xiao,Lei Wang,Hengjun Gai
Nanofiltration (NF) has become a widely used technology in water treatment due to its environmental friendliness, energy efficiency, cost-effectiveness, and operational simplicity. However, polyamide (PA) NF membranes still face challenges, including low permeate flux, limited resistance to organic pollutants, and inadequate resilience to residual chlorine. To address these issues, this study developed a thin-film composite (TFC) NF membrane featuring a separation layer of sandwich structure. Initially, a single separation layer of polyvinyl alcohol (PVA) NF membrane was prepared, followed by the fabrication of a PA layer on its surface, and ultimately, a second PVA layer was constructed on the PA layer. The experimental results show that the PVA/PA/PVA sandwich structure TFC exhibits high permeability to pure water and robust resistance to both pollution and residual chlorine. The PVA-0.20/PA/PVA-0.20 TFC, prepared with a 0.20%w/vPVA solution, achieved a pure water flux of up to 22.05 L m−2h−1bar−1(LMH/bar), which was 2.92 times higher than that of the control TFC membrane. Additionally, it demonstrated a salt rejection rate exceeding 96% for Na2SO4and over 99% for Congo Red (CR) and Victoria Blue B (VB). In comparison with the control TFC membrane, the PVA-0.20/PA/PVA-0.20 membrane exhibited significantly enhanced resistance to pollution. Following immersion in a 1000 ppm NaClO solution for 4 h, the rejection rate of the control TFC membrane decreased markedly and that of the PVA-0.20/PA/PVA-0.20 membrane decreased marginally, indicating excellent resistance to residual chlorine. Due to the robust overall performance of the PVA/PA/PVA membrane, it holds potential advantages for application in treating reclaimed water or slightly polluted water.
研究领域:
水处理
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膜技术
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环境工程
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材料科学
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产品关联
DOI
高影响因子
POLYMER TESTING
·
2023
·
IF 5.1
Zixuan Lv,Huimin Wang,Shiyang Li,Chaojie Bai,Mingjie Lin,Congjie Gao,Lixin Xue
Thin film nano-composite polyamide (TFN PA) total heat exchange membranes (THEMs) containing ZIF-7, ZIF-8, ZIF-9 and ZIF-67 particles (PTs) introduced during interface polymerization process were prepared. A novel integrated online testing system was established to simultaneously evaluate their CO 2 and moisture exchange rates as well as energy recovery efficiencies. ZIF PTs added in water phase improved the CO 2 barrier property of the THEMs due to their good dispersion in water, the coordination of the excess cations on their surfaces with the –NH 2 groups of MPD from the PA matrix and partially by increasing the PA layer thickness. Addition of ZIF PTs in organic phase showed variety of effects on the CO 2 barrier property of the THEMs depending on their dispersion, structure rigidity, and interaction with the PA polymer matrix. Adding 0.01 g/144 cm 2 of ZIF-67 in aqueous phase and 0.02 g/144 cm 2 of ZIF-9 in organic phase could form TFN membranes with improved CO 2 barrier property without sacrificing energy recovery efficiencies. ZIF-9 addition in organic phase formed ZIF/PA TFN THEMs with the highest total heat recovery rates of 72% and lowest on-line CO 2 exchange rates of 1.7%. The newly obtained online CO 2 exchange rates (h CO2 ) were found to have good correlation with the off-line CO 2 permeance values (PER CO2 ), ηCO 2 = ln (PER CO2 )%-0.005, with a high Pearson's R value of 0.9914. There was also a linear correlation between the permeation selectivity obtained online (DS H2O/CO2 ) and calculated offline (IS H2O/CO2 ), IS H2O/CO2 = 0.289*DS H2O/CO2 +14.4, with an excellent Pearson's R values of 0.9942. The integrated testing system could give more realistic evaluation for novel THEMs with a lot less efforts.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Nano Energy
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2022
·
IF 19.069
Jin Yang,Jie An,Yanshuo Sun,Jianjun Zhang,Lulu Zu,Hao Li,Tao Jiang,Baodong Chen,Zhong Lin Wang
Human-machine interaction (HMI) has made great progress in the intelligent medical system, realizing the interaction between patients, medical staff and medical equipment . Here, we report a triboelectric nanogenerator with the flexible-stretchable polyvinyl alcohol/phytic acid (PVA/PA) hydrogel for self-powered HMI sensing in intelligent medical system. Benefiting from effective optimization design of materials, it possesses excellent mechanical and electrical properties, such as over 20,000 cycles durability, transparency, flexibility, and power density up to 1.33 W·m −2 . The device has a linearity of up to 0.949 in the tensile range of 200% and 0.992 in the bending angle range from 30° to 90°, respectively. Through processing and encoding the electrical signals collected by multiple channels in independent or synergistic mode, a self-powered medical nursing HMI system attached to patient fingers was developed to provide real-time help and assistance for both patients and medical staff, which the demand for distress calls can be successfully transmitted with just gently bending fingers in diagnosis. This work exhibits the application value of the self-powered triboelectric sensor to the medical HMI field, and can be extended to other aspects, showing a broad impact in brain computer interface .
研究领域:
生物医学工程
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材料科学
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智能医疗
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Mingjuan Li,Na Zhao,Chenyao Wang,Yuhao Zou,Xinzhi Chen,Yi Mei
Polymer solid electrolytes (PSEs) are still under the safety risk because of flammability and low mechanical strength. Here a TiO 2 coated piperazine-modified ammonium polyphosphate (TiO 2 @PA-APP) is synthesized and incorporated into poly (ethylene oxide) (PEO)-based PSE membranes to meet the above challenges. The thermal stability and ionic conductivity of PSE membrane incorporated with TiO 2 @PA-APP have been improved. Micro-scale combustion calorimetry experiments indicate a dramatic 70 % decrease in heat release rate, from 919 W g −1 to 267 W g −1 . The lithium symmetric cell demonstrates remarkable durability, operating normally for 500 h with minimal polarization potential across various current densities at 60 °C. The all solid-state LiFePO 4 //Li battery using the cathode-supported TiO 2 @PA-APP/PEO-PSE membrane can reach a high discharge specific capacity of 153 mAh g −1 at 0.1 C and demonstrates good cycle performance, achieving a capacity retention rate of 88 % after 200 cycles at 0.2 C, along with an average coulombic efficiency of 99.24 %. These findings underscore the effectiveness of the TiO 2 @PA-APP flame retardant in fabricating solid-state lithium-ion batteries that provide enhanced safety and exceptional electrochemical performance.
研究领域:
材料科学
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电化学
·
能源存储
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yashi Qing,Enming Huang,Lixia Cao,Haigang Gao,Shengyong Zhao,Yanxiang Li,Wangliang Li
The prevalence of 17β-estradiol (E2) in wastewater has attracted widespread attention due to the negative impacts on ecological environments and human health. Nowadays, photocatalysis has been emerged as an efficient technology for E2 containing wastewater treatment. However, traditional powder photocatalysts face challenges such as easy agglomeration, secondary pollution and difficult recovery, limiting their large-scale application. In this study, a photocatalytic PA/C-PANI@BiOBr membrane was fabricated by immobilizing polyaniline (PANI) layer and BiOBr nanosheets on polyamide (PA) membrane through in-situ chemical bath deposition. This process leveraged the strong hydrogen bond interaction between PANI and PA, with the fine PANI fibers providing nucleation sites for the in-situ growth of BiOBr nanosheets. By repeating the immersion process, we controlled variations in the coverage density and morphology of BiOBr on the membrane surface. The PA/C-PANI@BiOBr membrane exhibited outstanding light absorption and photocatalytic performance. Notably, the optimal PA/C-PANI@BiOBr-10 membrane achieved 100 % removal efficiency of 3 mg L −1 E2 within 40 min. In dynamic cyclic experiments, PA/C-PANI@BiOBr-10 membrane maintained stable permeability and high removal efficiency of pollutants. The photocatalytic mechanism underlying these results was elucidated through photoelectric testing and further photocatalytic experiments. Furthermore, the PA/C-PANI/BiOBr-10 membrane demonstrated remarkable durability over multiple consecutive cycles, with E2 removal efficiency remaining above 96.5 % after 5 cycles.
研究领域:
环境科学
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材料科学
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化学工程
·
水处理
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Jiaming Yuan,Yuexiang Chang,Rongkai Gu,Zijian He,Ruining Zhang,Ann Van Schepdael,Tingting Zhang,Jincai Wang,Zhengjin Jiang
The highly conserved N -terminal domain of polymerase acidic endonuclease (PA N ) makes it an attractive target for the development of anti-influenza virus drugs. This study developed an innovative multi-detector based at-line nanofractionation platform by coupling an HPLC system containing triple-detector (diode array detector (DAD), charged aerosol detector (CAD) and MS) with fluorescence resonance energy transfer (FRET)-based bioassays to systematically identify potential PA N inhibitors from traditional Chinese medicine (TCM). A preliminary screening of 230 TCM extracts revealed an exceptional PA N inhibition by Terminalia chebula Retz. (IC 50 = 0.88 μg/mL). A time-resolved FRET bioassay in 384 well-plates with parallelized MS/MS analysis enabled real-time acquisition of both biological activity profiles and chemical information from Terminalia chebula Retz . extracts. HPLC-DAD-CAD analysis further elucidated the correlation between the content and bioactivity of the identified potential PA N -inhibitory compounds, addressing the limitations of traditional single UV-based detection. Remarkably, 31 bioactive compounds (including gallotannins, ellagitannins, and phenolic acids) were identified through this approach, with 75.9% exhibiting low abundance (CAD response < 1 pA·min), highlighting the unique capability of this platform in discovering low-abundant bioactive entities. Five verified compounds (ellagic acid, chebulinic acid, punicalagin, chebulagic acid, and 1,3,6-tri-O-galloyl- β -D-glucose) exhibited superior PA N inhibition (IC 50 = 0.52-1.00 μM) in comparison to baloxavir marboxil (IC 50 = 10.83 ± 1.46 μM). A molecular docking study elucidated their crucial PA N -binding interactions and fundamental mechanisms. Overall, this study not only identified several potential PA N inhibitors from Terminalia chebula Retz., but also offered a scalable at-line nanofractionation strategy to reveal the content-activity correlation of complex TCM extracts.
研究领域:
药物化学
·
天然产物药理学
·
抗病毒研究
·
中药现代化
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分子药理学
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分析化学
·
药物发现
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）