CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Zhichao Zhang,Zheng Li,Qiujin Li,Xiuming Liu,Jixian Gong,Huiqin Li
Noise has become a significant global pollutant but is considered unconventional energy. General, flexible materials like fiber and fabrics cannot substantially improve noise reduction, especially in middle frequencies. This investigation presented a novel strategy based on acoustic energy harvesting. A kind of aerogel composed of strongly piezoelectric nanofiber was prepared using the Decentralized Freeze-Casting method. The aerogel demonstrates the function of absorbing low-frequency energy and medium to high-frequency sound in relation to noise. The sound absorption coefficient in the frequency test band can reach 0.58, and the noise reduction coefficient (NRC) can reach 0.36. The maximum open-circuit voltage and short-circuit current tested during the acoustic-electrical conversion process are 48.2 V and 4.1 μA, respectively, and can be stored and used. In addition, the prepared nanofiber aerogel has good waterproof and mechanical properties. This work has a promising application in future noise management and acoustic energy conversion.
研究领域:
材料科学
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能源与环境工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Xuewu Li,Chenghu Ma,Tian Shi,Hejie Yang
The corrosion failure of aluminum‑lithium (Al Li) alloy, extensively used in aerospace and industry area, inevitably brings about considerable economic loss. In this work, stearic acid (STA) is utilized as a modulator for the low surface energy modification of TiO 2 particle. Polyurethane (PU) is employed as a binder to ensure the firm adhesion of modified STA@TiO 2 to Al Li alloy through a controllable and low-cost spraying process. Such structure design brings about a robust preparation of STA@TiO 2 /PU superhydrophobic coating for large-scale engineering application. The resultant coating exhibits a static water contact angle (CA) of 161.3 ± 0.8°, and a sliding angle (SA) of 3.1 ± 0.7°. The subsequent characterizations of surface morphology and chemical structure are performed using SEM, EDS, XPS, and laser confocal microscopy. Furthermore, the contrastive electrochemical impedances and kinetic potential polarizations are investigated on as-prepared coating and Al Li alloy substrate. The results indicate that the impedance modulus of STA@ TiO 2 /PU coating is enhanced by two orders of magnitude, while the corrosion potential demonstrates an increasement of 180 mV. The experimental tests confirm a significant improved corrosion resistance for STA@ TiO 2 /PU coating. Moreover, the effective self-cleaning, anti-pollution, buoyancy enhancement and anti-icing properties are discussed, and the corresponding interface behaviors and function implementation mechanisms are also systematically investigated. The findings have positive implications for expanding industrial applications of such multi-functional ceramic coatings in engineering construction, environmental protection, and harsh working conditions.
研究领域:
材料科学
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表面工程
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腐蚀与防护
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Zhaojian Gao,Shuai Zhou,Yingmei Zhou,Hongri Wan,Cai Zhang,Bing Yao,Teng Chen
In this work, a feasible collaborative design method for preparing magnetic superhydrophobic PU-PDA-Fe 3 O 4 -Ag sponge was proposed. Inspired by mussels, polydopamine (PDA) was used as a bio-glue to adhere Fe 3 O 4 , Ag nanoparticles and octadecylamine to the skeleton of the PU sponge. Under the synergistic effect, Fe 3 O 4 , Ag nanoparticles and octadecylamine endowed the PU sponge with magnetic response properties, antibacterial activity and superhydrophobic surface. The obtained superhydrophobic PU-PDA-Fe 3 O 4 -Ag sponge showed high absorption capacity for various oils and organic solvents with up to 22.9–52.0 times its own weight, which possessed a comparable or relatively high adsorption capacity compared with other reported superhydrophobic PU sponges. Due to the magnetic properties and good elasticity of the obtained PU sponge, the adsorbed oil can be quickly circulated through magnetic recovery and mechanical extrusion. After 20 absorption-desorption cycles, the adsorption capacity of the modified sponge remained above 90.9 % of the initial value, and under negative pressure, the sponge can be used as a filter for continuous separation of light oil and heavy oil from water. In addition, the surface-modified PU sponge also shows excellent oil-in-water emulsion degreasing performance, and the separation efficiency of toluene in water can reach 96.4%. Interestingly, the resulting PU sponges exhibited antibacterial activity with the action of Ag nanoparticles, indicating their potential environmental adaptability and durability in bacteria-contaminated oil/water mixture. The multifunctional characteristics of the modified polyurethane sponge prepared in this study have great potential for the practical application of oil spill treatment.
研究领域:
材料科学
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环境科学
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生物学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Functional Foods
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2016
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IF 3.973
Ran Zhao,Dong Chen,Hualing Wu
To investigate the effects of Pu-erh ripened tea on lowering uric acid levels and identify its possible mechanisms, three different doses of the tea, with allopurinol as a positive control, were administered intragastrically to hyperuricemic mice. Hyperuricemia was induced in the mice by oral administration of potassium oxonate for 7 days. Serum levels of uric acid, liver xanthine oxidase (XOD) and adenosine deaminase (ADA) activities, and expression of renal mURAT1, mGLUT9, mOAT1 and mOCT1 protein and mRNA were measured. Pu-erh ripened tea, at all doses, significantly lowered serum uric acid levels. At the high and medium doses, it also markedly inhibited liver XOD and ADA activities. Furthermore, mURAT1 and mGLUT9 expression levels were significantly down-regulated by Pu-erh ripened tea treatment. These results suggested that Pu-erh ripened tea can resist to hyperuricemia, possibly by inhibiting, concurrently, uric acid production and renal urate reabsorption.
研究领域:
药理学
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生物化学
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医学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2018
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IF 6.578
Daikun Li,Daoyong Mao,Qing Li,YaShi Chen,Xinhong Chen,Xi Xu
Developing versatile materials for simultaneous removal of organic dyes, heavy metals and oil from water has big significance for water protection. Herein, we fabricate a porous 3D polyurethane/polyacrylic acid (PU-PAA) membrane by simple solvent casting-salt leaching and thermal crosslinking, which combines the properties of underwater superoleophobicity and quantities of carboxyl groups. The stable superoleophobicity can be used for efficient surfactant-stabilized oil-in-water microemulsions separation. And the negative carboxylic ions are able to capture cationic dyes and heavy metals, simultaneously. Using the PU-PAA membrane in filtration column enables one-step multiple pollutants water treatment with high flux, selectivity, recyclability, efficiency and capacity. Moreover, PU-PAA can be used for efficient dye mixture separation. These results indicate that this versatile porous 3D membrane can be a very potential candidate for advanced purification applications.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Chemistry Frontiers
·
2022
·Vol. 6
·期 17
·2524-2534
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IF 8.683
Xinyan Lv,Zhonglin Wei,Canyu Cui,Wenwen Wang,Yumei Tan,Shihui Jiao,Guangsheng Pang
Developing superhydrophobic material with good chemical stability, non-toxic and low-cost for effectively handling oil spill incidents, chemical leakages and industrial oily wastewater has become an urgent need. In this work, superhydrophobic Fe3O4@C microspheres have been successfully anchored on polyurethane (PU) sponge skeleton surface with polyvinylidene fluoride (PVDF) as intermediate layer. The superhydrophobic Fe3O4@C/PVDF/PU sponge possesses outstanding superhydrophobic performance with water contact angle (WCA) of 156.5° and sliding angle (SA) of 6°. Meanwhile, the Fe3O4@C/PVDF/PU sponge shows excellent chemical, thermal and mechanical stabilities under harsh conditions, high separation efficiencies for surfactant-stabilized organic solvent/water emulsions (more than 99.6% for both O/W and W/O emulsions) and preferable recyclability (more than 15 cycles). The comprehensive performances of the Fe3O4@C/PVDF/PU sponge make it a promising candidate for the treatment of industrial oily wastewater.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 23
·27524-27533
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IF 2.478
Wang Wenbo,Liu Botao,Lv Xiaomeng
To achieve adaptation to the heat dissipation effect of electronic devices in the 5G era and improvement of the anisotropic thermal conductivity of the insulating polymer, three-dimensional (3D) PU@BNNS-OH network structure was constructed via layer-by-layer assembly with polyurethane (PU) foam as the robust skeleton of three-dimensional structure, and hydroxylated boron nitride nanosheet (BNNS-OH) as thermal conductive filler. Then PU@BNNS-OH was composited with polyvinyl alcohol (PVA) via microwave-assisted curing method to get the final thermal conductivity composites (PVA/PU@BNNS-OH). The result showed that the interconnected thermal conductivity network was significantly effective in improving the anisotropic thermal conductivity of the composite with high-temperature endurance and moderate mechanical property. When the BNNS-OH coating is 10 wt%, the optimal thermal conductivity of the composite is 4.68 W · \({\mathrm{m}}^{-1}\) · \({\mathrm{K}}^{-1}\) and the thermal conductivity enhancement efficiency is 45.50, which is significantly higher than others reported in the literature. Both the finite element analysis and thermal infrared analysis indicated that the thermal conductivity of the composites was significantly improved and paved the way for its potential application. The present microwave-assisted synthesis strategy is fast and energy-saving and can be widely used for synthesizing different insulated polymer-based thermal interface materials.
研究领域:
材料科学
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热管理材料
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
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2023
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IF 9.9
Miao Sun,Haiyue Yang,Xin Wang,Xiong Gao,Chengyu Wang,Shih-Hsin Ho
Solar desalination technology is an effective approach to produce clean water through evaporating seawater driven by solar energy. However, it remains a great challenge to develop a kind of solar evaporator with high salt-resistance, great stability and superior efficiency. Herein, inspired by wood structure, a polyurethane/chitosan/MXene aerogel with directional channel structure was originally designed as the solar evaporator for desalination by the freeze-casting method. The constructed unique anisotropic three-dimensional (3D) structure enabled the solar evaporator with efficient water transport network, which can effectively improve the salt-rejecting capability. Meanwhile, due to the combination of the full spectral absorption capacity of MXene and the unique directional channel structure, a satisfactory evaporation rate (1.81 kg.m −2 h −1 ) and high evaporation efficiency (85.07 %) under one-sun irradiation were achieved. Moreover, taking chitosan and waterborne polyurethane (PU) as matrix materials endowed the evaporator with favorable mechanical stability, which made the evaporator continuously achieving high evaporation rate for 12 h under one-sun irradiation and stably floating on the high- concentration salt water for over 14 days. In addition, the evaporator showed excellent salt resistance performance owing to its anisotropic directional channel structure. Also, a series of simulation and numerical modeling were carried out to assist in proving the mechanism of water transportation and desalination in the evaporator. Together, this work may provide a promising avenue for developing an efficient solar evaporator with superior salt blocking ability that could be potentially used for long-term clean water generation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Applied Sciences-Basel
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2023
·Vol. 13
·期 11
·6682
·
IF 2.7
Shunqi Mei,Teng Liu,Long Chen,Yifan Wang
The diaphragm is a key component of the lithium-ion battery and largely determines its performance. Currently, commercial diaphragms suffer from poor thermal stability, low porosity, and low liquid absorption rate. In this study, we prepared a polyurethane/polyacrylonitrile (PU/PAN) lithium-ion battery diaphragm using a centrifugal spinning method with PU as the main substrate and PAN as the additive. The results showed that the PU/PAN nanofiber diaphragm prepared by centrifugal spinning had a 3D porous structure, and when using 18% PU:PAN = 7:3, the porosity of the fiber diaphragm was 83.9%, the liquid absorption rate was 493%, and the ionic conductivity was 1.79 mS/cm. The battery system had good electrochemical performance and thermal stability, with an electrochemical stability window of 5.2 V. The diaphragm did not shrink when heated at 160 °C. In a lithium-ion battery system with lithium iron phosphate (LiFePO4) as the cathode material, the capacity remained at 147.1 mAh/g after 50 cycles at a 0.2 C rate, with a capacity retention rate of 95.8%. This indicated excellent cycle stability and a multiplicative performance with good application potential.Keywords:centrifugal spinning;nanofiber;lithium-ion battery separator;polyurethane;polyacrylonitrile
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Advanced Science
·
2023
·
IF 15.1
Long Fang,Ruofei Zhang,Lin Shi,Jiaying Xie,Long Ma,Yili Yang,Xiyun Yan,Kelong Fan
The success of arsenic in degrading PML-RARα oncoprotein illustrates the great anti-leukemia value of inorganics. Inspired by this, the therapeutic effect of inorganic selenium on t(8; 21) leukemia is studied, which has shown promising anti-cancer effects on solid tumors. A leukemia-targeting selenium nanomedicine is rationally built with bioengineered protein nanocage and is demonstrated to be an effective epigenetic drug for inducing the differentiation of t(8;21) leukemia. The selenium drug significantly induces the differentiation of t(8;21) leukemia cells into more mature myeloid cells. Mechanistic analysis shows that the selenium is metabolized into bioactive forms in cells, which drives the degradation of the AML1-ETO oncoprotein by inhibiting histone deacetylases activity, resulting in the regulation of AML1-ETO target genes. The regulation results in a significant increase in the expression levels of myeloid differentiation transcription factors PU.1 and C/EBPα, and a significant decrease in the expression level of C-KIT protein, a member of the type III receptor tyrosine kinase family. This study demonstrates that this protein-nanocaged selenium is a potential therapeutic drug against t(8;21) leukemia through epigenetic regulation.
研究领域:
肿瘤学
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分子生物学
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纳米技术
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表观遗传学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
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2017
·Vol. 7
·期 54
·33701-33707
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IF 3.108
Yufen Zhang,Weiwei Li,Ronglan Wu,Wei Wang
We report a study on the triple-shape memory polymer composition of polyurethane/polymethyl methacrylate (PU/PMMA) synthesized using reaction-induced phase separation. Microscopic phase separation, which forms sea-island structures, enhances the shape memory effect, and phase separation can be achieved by changing the volume ratio of the two components in the polymer composites. In this study, we used the same method and synthesized 5 composites with different volume ratios of PU/PMMA. The composites with a PU/PMMA ratio of 2 : 1 exhibited triple-shape memory effect. The PU/PMMA composites were characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and dynamic mechanical analysis (DMA). Based on the studies, we propose that reaction-induced phase separation can be used as a general approach to achieve the shape memory effect.
研究领域:
材料科学
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高分子化学
✓ 已验证
DOI
高影响因子
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
·
2025
·
IF 3.4
Liwei Yang,Xinshuai Yan,Jianguo Duan,Kun Lei,Yaxiong Wang,Jianguo Cheng
Phase change materials (PCM) possess the issues of leakage, low thermal conductivity, lack of rigidity and poor photo thermal conversion ability. To overcome these challenges, we have successfully designed and prepared flexible PW/PU/CuNWs/MXene (PPCuM) composite phase change materials with high thermal conductivity by solution blending and vacuum impregnation by using polyurethane (PU), one-dimensional copper nanowires (CuNWs) as high thermal conductivity, and two-dimensional transition metal carbide/nitride (MXene) as fillers. Furthermore, PU based PCM is developed by adding MXene at different weight fractions and the influence of MXene content on PPCuM properties was studied. As expected, benefiting from the high aspect ratio and strong capillary force of the MXene as well as the interfacial interaction between the PCM molecule and MXene, the resulting PPCuM exhibit a large thermal conductivity (0.705 W·m−1·K−1), which is 332.5% higher than that of pure PW, high latent heat (155.42 J·g−1), mechanical strength reaches 81.83 KPa, and are form-stable upon heating up to 75°C. The solar simulator and thermal conductivity demonstrated a superior photo-thermal conversion capability and thermal networks for the developed PU based composite sample at 83.3 wt% of MXene. At the same time, MXene effectively improved the photo-thermal conversion capacity (91.35%) and heat transfer rate (2.91 J·s−1) of PPCuM, which was further confirmed by the surface temperature distribution results. In addition, PPCuM has excellent photo-thermal conversion efficiency, good chemical compatibility, crystallization properties, and acceptable thermal stability.
研究领域:
材料科学
·
能源工程
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）