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学者姓名:陈怀银
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The growing complexity of dyeing and printing effluents has presented considerable challenges for their effective treatment and recycling. Recently, there has been a notable increase in the development of loose nanofiltration (NF) membranes, which are characterised by their exceptional environmental resilience, high throughput, and superior dye/salt selectivity. This work presents the development of a new loose NF membrane prepared from a modified polymer called poly(ether sulfone ether ketone ketone) (PESEKK). The membrane features a dense- loose-support structure and is prepared through a straightforward one-step, non-solvent induced phase separation (NIPS) technique, eliminating the need for heating or post-treatment. Precise regulation of membrane pore size down to 4.27 nm can be achieved through modulation of PESEKK and pore-former composition. The membranes could separate positively and negatively charged dyes in mixed dye solutions accurately and selectively. Additionally, the membrane demonstrated exceptional dye/salt selective separation with a high water flux of 230.7 L m- 2 h- 1 bar- 1 , Congo red rejection of 99.91 +/- 0.13 %, NaCl rejection of 2.71 +/- 0.23 %, and a separation factor (alpha) of 347.4, outperforming state-of-the-art membranes. Remarkably, PESEKK membrane maintained outstanding stability and separation performance for up to 200 h under extreme environments, including NaOH solution (up to 9 mol L-1), NaClO solution (up to 40,000 mg L-1 h), n-hexane, isopropanol, and methanol. This high-performing loose NF membrane, developed using innovative polymer materials, offers a promising solution for treating the challenging wastewater generated by printing and dyeing processes.
Keyword :
Dense-loose-supporting structure Dense-loose-supporting structure Dye/salt separation Dye/salt separation Loose nanofiltration Loose nanofiltration Non-solvent induced phase separation Non-solvent induced phase separation Poly(ether sulfone ether ketone ketone) Poly(ether sulfone ether ketone ketone)
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GB/T 7714 | Zhang, Hongxiang , Lai, Xing , You, Jian et al. Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation [J]. | DESALINATION , 2025 , 601 . |
MLA | Zhang, Hongxiang et al. "Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation" . | DESALINATION 601 (2025) . |
APA | Zhang, Hongxiang , Lai, Xing , You, Jian , Wang, Wei , Wu, Meihua , Liu, Longmin et al. Facile construction of novel poly(ether sulfone ether ketone ketone) loose nanofiltration membrane for efficient dye/salt separation . | DESALINATION , 2025 , 601 . |
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Highly permeable polyamide (PA) membranes with precise ion selection can be used for many energy-efficient chemical separations but are limited by membrane inefficiencies. Herein, polyphenol-mediated ZIF-8 nano- particles with hydroxyl-rich hollow structure were synthesized by tannic acid tailored regulation. PA-based membranes with fast penetration, high retention, and precise Cl-/SO42- selection were then synthesized through spatially and temporally controlling interfacial polymerization with modified ZIF-8 nanoparticles (tZIF8) as aqueous phase additives or as interlayers. The effects of the embedding position of tZIF-8 on the structure, morphology, physicochemical properties, and performance of PA-based membranes were explored through a sequence of characterization techniques. The results revealed that the PA-based membrane with tZIF-8 embedded in the PA layer could achieve a high water permeance of 24.8 L m- 2 h- 1 bar- 1 with a high retention of 99.4 % Na2SO4 and a Cl-/SO42- selectivity of 141, which was superior to most state-of-the-art PA-based membranes. Comparatively, the Cl-/SO42- selection of the PA-based membrane with tZIF-8 embedded between the PA layer and the substrate was 136, while the water permeance was slightly enhanced to 28.2 L m- 2 h- 1 bar- 1 . Excitingly, the resulting membranes all exhibit superior antifouling properties and stability. Our facile strategy for tuning membrane microstructures provides new ideals into the development of highly permeable and excellently selective PA-based membranes for precise ion sieving.
Keyword :
Different embedding positions Different embedding positions Interfacial polymerization Interfacial polymerization Ion sieving Ion sieving Nanoparticles Nanoparticles Spatial-temporal regulation Spatial-temporal regulation
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GB/T 7714 | Lai, Xing , Zhang, Hongxiang , Xu, Weiye et al. Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 714 . |
MLA | Lai, Xing et al. "Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation" . | JOURNAL OF MEMBRANE SCIENCE 714 (2025) . |
APA | Lai, Xing , Zhang, Hongxiang , Xu, Weiye , You, Jian , Chen, Huaiyin , Li, Yongzhao et al. Polyamide membranes with tannic acid-ZIF-8 for highly permeable and selective ion-ion separation . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 714 . |
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Green hydrogen is currently the dominant trend in the evolution of hydrogen energy, producing almost no greenhouse gas emissions. Alkaline water electrolysis (AWE) is recognized as a leading and well-established technology for producing green hydrogen. However, safety hazards may occur during hydrogen production currently as defective commercial separate membranes used in the AWE process. Therefore, it is imperative to create a membrane characterized by low area resistance, high stability, and high bubble point pressure (BPP) to realize high-performance AWE. Herein, we synthesize alumina-based composite membranes with Y2O3-added and polyethylene glycol coupling agent functionalized Al2O3 for AWE through a phase inversion method. The porous composite membrane exhibits excellent hydrophilicity, with a lower contact angle of approximately 55 degrees. It also presents exceptional performance metrics, including a low area resistance of about 0.17 Omega cm(2), an ultrahigh BBP of approximately 4.4 bar, and excellent mechanical properties with a tensile strength of around 25 MPa. The membranes achieved a current density of up to 2.5 A cm(-2) under 2.0 V voltage in a 30 wt% KOH solution at 80 degrees C by utilizing commercial catalysts. Notably, the composite membranes exhibited remarkable stability, maintaining operation for over 1200 h at a 2.0 A cm(-2) current density without any performance degradation at 80 degrees C. Furthermore, this composite membrane possesses outstanding gas-barrier capability with H-2 and O-2 purity higher than 98.70 % and 99.69 %, respectively. The above results demonstrate that the prepared novel high-performance alumina-based composite membrane for hydrogen generation has significant potential for applications within the AWE process.
Keyword :
Alkaline water electrolysis Alkaline water electrolysis Composite membrane Composite membrane Functionalized alumina Functionalized alumina High current density High current density Hydrophilicity Hydrophilicity
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GB/T 7714 | Lu, Jinyu , You, Jian , Chang, Ben et al. Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis [J]. | JOURNAL OF MEMBRANE SCIENCE , 2025 , 725 . |
MLA | Lu, Jinyu et al. "Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis" . | JOURNAL OF MEMBRANE SCIENCE 725 (2025) . |
APA | Lu, Jinyu , You, Jian , Chang, Ben , Wang, Wei , Li, Yongzhao , Lin, Jiabin et al. Polyethylene glycol functionalized alumina-based composite membrane with high-performance for alkaline water electrolysis . | JOURNAL OF MEMBRANE SCIENCE , 2025 , 725 . |
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Flexible thermal insulation membrane plays a key role in outdoor wear of human body and thermal management of electronic products. This study used electrospinning to prepare thermal insulation hollow silica/polytetrafluoroethylene (HSi/PTFE) fiber membranes. HSi were prepared using tetraethylorthosilicate as the silicon source and hydrothermal carbon spheres as templates. A spinning solution of PTFE containing the HSi was used to prepare fiber membranes. The heat transfer resistance of the fiber is improved by embedding HSi into the PTFE fiber, resulting to improved heat insulation capability of the fiber membrane. The influence of HSi content on the thermal insulation performance of PTFE fiber membrane was studied. When the HSi content was 5 %, the fiber membrane showed the lowest thermal conductivity (0.0197 W/(m·K)), which was not only lower than most fiber thermal insulation materials, but also had excellent tensile properties (tensile deformation capacity of 168 %), which was convenient for practical application. In addition, this kind of fiber membrane also has high hydrophobicity (water contact angle of 147°), effectively reducing the influence of moisture on thermal insulation performance. This work presents innovative prospects for the future advancement of thermal insulation materials. © 2024 Elsevier Ltd
Keyword :
Electrospinning Electrospinning Fiber membrane Fiber membrane Hollow silica Hollow silica Polytetrafluoroethylene Polytetrafluoroethylene Thermal insulation Thermal insulation
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GB/T 7714 | Wang, G. , Wang, L. , You, J. et al. Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning [J]. | Applied Thermal Engineering , 2024 , 255 . |
MLA | Wang, G. et al. "Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning" . | Applied Thermal Engineering 255 (2024) . |
APA | Wang, G. , Wang, L. , You, J. , Yang, Y. , Wang, Y. , Wang, W. et al. Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning . | Applied Thermal Engineering , 2024 , 255 . |
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Dinitroaromatics are valuable organic compounds. However, the high value of these compounds is accompanied by significant risks and formidable challenges. Herein, we report a safe and highly efficient method for the dinitration of various aromatic compounds, using KNO3 as nitrating agent, polyphosphoric acid as solvent and catalyst. This approach provides a safer and more efficient alternative to the traditional mixed acid system, making it suitable for a range of substrates, especially highly deactivated arenes.
Keyword :
Dinitration Dinitration Dinitroaromatics Dinitroaromatics KNO3 KNO3 PPA PPA
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GB/T 7714 | Jia, Yixiong , Wen, Bin , Nan, Peiran et al. Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition [J]. | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY , 2024 , 28 (1) . |
MLA | Jia, Yixiong et al. "Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition" . | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY 28 . 1 (2024) . |
APA | Jia, Yixiong , Wen, Bin , Nan, Peiran , Chen, Huaiyin , Chen, Xingquan , Li, Shiyun . Polyphosphoric Acid Catalyzed C-H Dinitration of Passivated Aromatic Compounds with Potassium Nitrate under Mild Condition . | EUROPEAN JOURNAL OF ORGANIC CHEMISTRY , 2024 , 28 (1) . |
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Polyphenylene sulfide (PPS), commonly used as a core material for high -temperature flue gas treatment, exhibits elevated viscosity when processed even at temperature exceeding 280 degrees C. In this study, a novel high-flowability PPS -based composite was fabricated through the incorporation of graphitic carbon nitride (g-C3N4) via a wellestablished melt extrusion procedure. The enhancement of flowability in PPS was verified, and the material's texture structures and fundamental properties of composites with varying contents were determined. The composites exhibit well -dispersed g-C3N4, a significant reduction in shear viscosity (>10 %), a notable increase in melt index (>30 %), improved crystallinity, and comparable or superior performance compared to pure PPS. When the g-C(3)N(4 )was introduced into the PPS matrix, a phase -separated composite structure was formed. This structure reduces the entanglement degree between the PPS molecular chains and provides more space for freemovement of the PPS chains, and thus the improvement in flowability for the composites can be clearly demonstrated. Therefore, g-C(3)N(4 )can be used as a novel flow modifier to enhance the flowability and stability of PPS resin without compromising its fundamental properties, which offers significant prospects for improving productivity, optimizing energy usage, and managing costs for PPS -based products.
Keyword :
Graphitic carbon nitride (g-C3N4) Graphitic carbon nitride (g-C3N4) High flowability High flowability Melt blending Melt blending Phase-separated structure Phase-separated structure Polyphenylene sulfide (PPS) Polyphenylene sulfide (PPS)
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GB/T 7714 | Cao, Hong , Zhang, Bing , Wang, Wei et al. Development of high-flowability melt PPS-based composites through blending with g-C3N4 [J]. | POLYMER , 2024 , 293 . |
MLA | Cao, Hong et al. "Development of high-flowability melt PPS-based composites through blending with g-C3N4" . | POLYMER 293 (2024) . |
APA | Cao, Hong , Zhang, Bing , Wang, Wei , Li, Yongzhao , Jia, Mengke , Yu, Weihe et al. Development of high-flowability melt PPS-based composites through blending with g-C3N4 . | POLYMER , 2024 , 293 . |
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Flexible thermal insulation membrane plays a key role in outdoor wear of human body and thermal management of electronic products. This study used electrospinning to prepare thermal insulation hollow silica/polytetrafluoroethylene (HSi/PTFE) fiber membranes. HSi were prepared using tetraethylorthosilicate as the silicon source and hydrothermal carbon spheres as templates. A spinning solution of PTFE containing the HSi was used to prepare fiber membranes. The heat transfer resistance of the fiber is improved by embedding HSi into the PTFE fiber, resulting to improved heat insulation capability of the fiber membrane. The influence of HSi content on the thermal insulation performance of PTFE fiber membrane was studied. When the HSi content was 5 %, the fiber membrane showed the lowest thermal conductivity (0.0197 W/(m center dot K)), which was not only lower than most fiber thermal insulation materials, but also had excellent tensile properties (tensile deformation capacity of 168 %), which was convenient for practical application. In addition, this kind of fiber membrane also has high hydrophobicity (water contact angle of 147 degrees), effectively reducing the influence of moisture on thermal insulation performance. This work presents innovative prospects for the future advancement of thermal insulation materials.
Keyword :
Electrospinning Electrospinning Fiber membrane Fiber membrane Hollow silica Hollow silica Polytetrafluoroethylene Polytetrafluoroethylene Thermal insulation Thermal insulation
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GB/T 7714 | Wang, Guotao , Wang, Lin , You, Jian et al. Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning [J]. | APPLIED THERMAL ENGINEERING , 2024 , 255 . |
MLA | Wang, Guotao et al. "Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning" . | APPLIED THERMAL ENGINEERING 255 (2024) . |
APA | Wang, Guotao , Wang, Lin , You, Jian , Yang, Yuchen , Wang, Yuanze , Wang, Wei et al. Preparation of hollow silica/PTFE fiber membrane with excellent thermal insulation performance by electrospinning . | APPLIED THERMAL ENGINEERING , 2024 , 255 . |
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Organic solvent nanofiltration (OSN) is a green, energy-saving, and highly efficient emerging membrane separation technology, and there is an urgent need for robust, easy-to-process OSN membranes with high permeance and small solute selectivity for industrial applications. Herein, we propose a new strategy for accurately designing novel OSN membranes. Specifically, a polyamide (PA) interlayer was synthesized in-situ on the surface of homogeneous reinforced poly(p-phenylene terephthamide) (PPTA) hollow fiber membrane by interfacial polymerization (IP) using both ultra-low concentrations piperazine (PIP, 0.05 wt%) and trimesoyl chloride (TMC, 0.005 wt%), and then a defect-free and dense PPy layer was deposited on top of the hydrophilic PA interlayer by chemical vapor deposition (CVD) process to prepare PA/PPy composite membranes with spherical cluster or strip cluster "Turing-like" structure. The resulting PA/PPy composite membranes presented an excellent high selective permeability, the dimethylacetamide (DMAc) permeability was 21.1 Lm(-2)h(-1)MPa-1, and the molecular weight cut-off (MWCO) was as low as 185 Da. A 30-hour OSN test at elevated temperatures (80 degrees C) and in organic solvent (DMAc), as well as a one-month immersion test in ethanol and DMAc at room temperature, demonstrated superior separation performance and structural stability of the membranes, indicating their application potential in harsh solvent systems. Our novel method for developing nanoscale ordered structured PA/PPy composite membranes offers great potential for the development of multilevel structural designs in the preparation of high-performance OSN membranes with potential industrial applications.
Keyword :
Chemical vapor deposition Chemical vapor deposition Hollow fiber Hollow fiber Interfacial polymerization Interfacial polymerization Interlayer Interlayer Organic solvent nanofiltration Organic solvent nanofiltration Poly(p-phenylene terephthamide) Poly(p-phenylene terephthamide)
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GB/T 7714 | Lai, Xing , Wang, Chun , Chen, Huaiyin et al. Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 338 . |
MLA | Lai, Xing et al. "Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration" . | SEPARATION AND PURIFICATION TECHNOLOGY 338 (2024) . |
APA | Lai, Xing , Wang, Chun , Chen, Huaiyin , Zhu, Tianxue , Huang, Jianying , Xiao, Changfa et al. Controllable preparation of novel homogenous reinforcement poly (p-phenylene terephthamide) hollow fiber nanofiltration membrane with nanoscale ordered structures for organic solvent nanofiltration . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 338 . |
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In recent years, loading antioxidants onto inorganic nanoparticles has attracted increasing interest. However, the existing studies not only have low antioxidant loading efficiency, but also ignore the relationship between structural changes and antioxidant properties before and after antioxidant modification, greatly limiting the improvement of the antioxidant properties of composites and their application scope. In this work, we successfully prepared bis-hindered phenolic antioxidants containing silica hydroxyl groups (Bis-mAO) and loaded them onto silicon dioxide (SiO 2 ) to get the nanocomposites (Bis-mAO-SiO 2 ). The melt blending method further prepared the corresponding polyphenylene sulfide (PPS)/Bis-mAO-SiO 2 composites. The results showed that the higher antioxidant loading and more suitable antioxidant structure made Bis-mAO-SiO 2 possess excellent antioxidant properties. The prepared PPS/Bis-mAO-SiO 2 composites remained stable under high temperatures and oxygen environments. Impressively, the maximum weight loss rate temperature of PPS/Bis-mAO-SiO 2 was increased by 11.60 degrees C compared to that of PPS, and after accelerated thermal oxidation at 220 degrees C for 24 h, the relative intensity ratio between O and C of PPS/Bis-mAO-SiO 2 only increased to 0.086, much lower than 0.132 for PPS. Moreover, the viscosity of PPS/Bis-mAO-SiO 2 only increased by 29.05 % and 88.75 % after accelerated thermal oxidation at 220 degrees C for 12, 24 h. Compared, PPS ' s viscosity increased substantially by 79.22 % and 250.3 %, respectively. This meant that the Bis-mAO-SiO 2 successfully achieved a synergistic integration of high antioxidant properties and thermal stability, implying that the work offered a strategy for fabricating hightemperature resistant antioxidant composites.
Keyword :
Hindered phenolic Hindered phenolic Polyphenylene sulfide Polyphenylene sulfide Rheological properties Rheological properties Silicon dioxide Silicon dioxide Thermal oxidation stability Thermal oxidation stability
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GB/T 7714 | Cai, Weilong , You, Jian , Wang, Wei et al. Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 . |
MLA | Cai, Weilong et al. "Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS" . | CHEMICAL ENGINEERING JOURNAL 487 (2024) . |
APA | Cai, Weilong , You, Jian , Wang, Wei , Chen, Huaiyin , Liu, Longmin , Ma, Yuhan et al. Double-hindered phenolic SiO 2 composites with excellent oxidation resistance and thermal stability for enhanced thermal oxidation stability of PPS . | CHEMICAL ENGINEERING JOURNAL , 2024 , 487 . |
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Superhydrophobic coatings show great application prospect in various fields such as corrosion protection, antiicing, waterproof and oil-water separation, due to their unique properties. However, the poor mechanical stability and the preparation complexity severely limit their practical application. In this study, superhydrophobic epoxy coatings with excellent mechanical stability were facilely constructed based on fluoridation modification of amine curing agent and TiO2 nanoparticles. Epoxy curing agent, diethyltriamine, was fluorinated by the reaction with heptafluorobutyric acid to obtain the required low surface energy. Meanwhile, fluorinated TiO2 nanoparticles were prepared through the reaction with 1 H,1 H,2 H,2H-perfluorooctanetriethoxysilane and further used for generating the roughness. The properties of the coatings were adjusted by the addition amount ratio of TiO2 nanoparticles to epoxy resin. The performance tests of water wetting, abrasion resistance, and corrosion resistance of the coatings were carried out. The results show that the hydrophobicity of epoxy coating is greatly improved after fluoridation modification of amine curing agent, and the greater the amount ratio fluorinated TiO2 nanoparticles to epoxy resin, the higher hydrophobicity of the modified coating. The modified coating prepared under optimal conditions displays excellent abrasion resistance, self-cleaning and anticorrosion performances. The electrochemical impedance spectroscopy tests in 3.5 wt% NaCl solution reveal that the hydrophobically modified epoxy coating has the largest charge transfer resistance, which is 8 orders of magnitude larger than that of uncoated Q235 steel. This work provides a simple method for preparation of superhydrophobic epoxy coatings with excellent mechanical stability, and will enlighten researchers to develop more superhydrophobic coatings and their applications.
Keyword :
Anti-corrosion Anti-corrosion Epoxy coatings Epoxy coatings Fluoridation Fluoridation Hydrophobicity Hydrophobicity Self-cleaning Self-cleaning
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GB/T 7714 | Chen, Haoxiang , Su, Feifei , Wang, Zhonghe et al. Facile construction of hydrophobically modified epoxy coatings with excellent anti-corrosion, abrasion resistance and self-cleaning performances [J]. | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
MLA | Chen, Haoxiang et al. "Facile construction of hydrophobically modified epoxy coatings with excellent anti-corrosion, abrasion resistance and self-cleaning performances" . | MATERIALS TODAY COMMUNICATIONS 41 (2024) . |
APA | Chen, Haoxiang , Su, Feifei , Wang, Zhonghe , Li, Congxiang , Fan, Zhihong , Zhang, Dongfang et al. Facile construction of hydrophobically modified epoxy coatings with excellent anti-corrosion, abrasion resistance and self-cleaning performances . | MATERIALS TODAY COMMUNICATIONS , 2024 , 41 . |
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