JOURNAL OF MEMBRANE SCIENCE
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2020
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IF 7.183
Jin Wang,Yirong Sun,Weihui Bi,Zhenhua Jiang,Mei Zhang,Jinhui Pang
Nowadays, PEEK , as a kind of high performance polymer characterized with high strength , great corrosion resistance and thermal stability is regarded as a promising membrane material. In this study, PEEK fibers were prepared by melt spinning and then woven into textiles. Furthermore, interface reduction was utilized to give a more hydrophilic textile (PEEK-OH textile). In addition, considering to make full use of the huge membrane pores of the textile, a liquid-infused method was employed to regulate its surface energy and to establish an under-water oleophobic surface. Surprisingly, PEEK-OH textile functioned in not only oil/water separation, but also separating immiscible organic liquids with different polarities just through a liquid-infused approach. More importantly, we firstly introduced ‘mediator effect’ during the pre-wetting process before separation, taking ethanol as a ‘mediator’. Furthermore, according to the ‘mediator effect’, an under-oil hydrophobic membrane was established using dichloromethane as a ‘mediator’. As we expected, both PEEK and PEEK-OH textiles revealed features such as high flux, admirable selectivity, competitive strength, great corrosion resistance and thermal stability, herein, they promised to be used for oil/water separation in practical environment.
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
International Journal of Electrochemical Science
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2024
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IF 1.3
Ya Zhang,Chen Tian,Ke Wang,Qiang Shen
The high temperature sintered ceramic pellets of solid electrolyte Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP), obtained in the absence of any sintering aids, should contain a large amount of interparticle gaps, which is one of the main bottlenecks in developing LATP-based all-solid-state Li-metal batteries. In this study, a facile solution (LiCl in ethanol) immersion method is adopted to soak the already 900℃-sintered LATP ceramic pellets, and the resulting series of LATP-xLiCl (x denotes the weight fraction of LiCl, 0.0 ≤ x ≤ 3.7) are assayed to address the high-performance mechanism of lithium-graphite (Li-C) symmetric cells. At the optimal x value of 2.3, the grain-boundary resistance of the ceramic pellet can be significantly reduced from 1772 to 28 Ω·cm² at room temperature, which endows the Li-C symmetrical cells of LATP-2.3LiCl with a high critical current density of 3.00 mA cm² at 60°C. Especially, the enhanced ionic conductivity of LATP-2.3LiCl (4.7×10 −4 S cm −1 , at 20℃; 1.1×10 −3 S cm −1 , at 60℃) indicates an effective strategy of utilizing capillary force to densify LATP-based ceramic pellets for potential application purposes.
研究领域:
材料科学
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能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2025
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IF 8
Mingwei Wang,Bin Li,Zhendi Wang,Ling Wang
Understanding the porosity characteristics and mechanisms of superabsorbent polymers (SAPs) in cement-based materials is crucial for evaluating their effects on autogenous shrinkage and compressive strength in cement-based materials. In this study, SAPs with different chemical compositions were synthesized by copolymerization of acrylic acid (AA) and acrylamide (AM). Absorption and release behaviors were analyzed, while pore formation parameters were assessed using ultraviolet fluorescence impregnation and digital image processing. Combined with FTIR, TG/DTA, and performance tests, water release characteristics, pore formation mechanisms, and regulatory effects on cement paste were evaluated. Key findings include in terms of absorption behavior, the equilibrium absorption capacity in cement filtrate decreases as AA content in SAP increases. Pore-forming absorption capacity in actual cement paste is higher than that obtained in cement filtrate. The ability of SAP to reduce autogenous shrinkage depends on its water storage and release properties. The optimal composition for minimizing shrinkage is m AA : m AM = 25 %:75 %. For compressive strength, SAP-induced porosity ( η pf ) is the primary factor. Similar η pf values for certain compositions lead to lower strengths. When SAP contains only −CONH groups, the compressive strength is highest. This study provides a theoretical basis for optimizing SAP composition to reduce autogenous shrinkage and enhance concrete strength.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2022
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IF 5.532
Site Luo,Yang He,Yangjie Li,Bin Zhang,Wenjin Gao,Haihu Yu
Rewritable paper is of great significance for environmental and sustainable development. Specially, the water rewritable paper based on hydrochromism has aroused extensive research interesting for being clean, convenient and compatible with the current ink jet printer. Nevertheless, previously reported water rewritable paper requires complex and time-consuming fabricating process. Here, we report a facile strategy to fabricate structural colored water rewritable paper simply via two step infiltration on commercially available paper. After infiltration of graphene laminates and SiO 2 colloidal spheres in sequence, the obtained paper is integrated with assembled graphene laminates (AGLs)/amorphous colloidal arrays (ACAs) hierarchical composite structure. Owing to the advantageous micro-topography, selective separation capacity and high visible light absorption property of the underlying AGLs, SiO 2 ACAs with vivid structure color can be realized. Moreover, the hydrochomism of the hierarchical composite structure is resulted from the synergistic contribution of the hydrophilic structural color and the visible light absorption property of AGLs. Our strategy is based on the environmental-friendly structural color and convenient to realized, which offers a promising alternative to rapidly fabricate colored water rewritable paper.
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
危险品化学品经营许可证（带存储）