Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Pei Nian,Xiaojuan Wang,Shuming Li,Zheng Wang,Yibin Wei
There remains a great challenge to develop a switchable and feasible membrane for integrate reversible separation of oil/water mixtures. Herein, a highly-quality CAU-10-H mesh membrane with switchable superwettability was fabricated via solvothermal synthesis for on-demand oil/water separation. The CAU-10-H membrane exhibited under-liquid dual superlyophobicity due to the hierarchical micro-/nanostructures constructed by interpenetrating CAU-10-H crystals grown on the mesh. Meanwhile, the secondary growth time affecting the wetting behavior of the membrane is studied. More importantly, the membrane can achieve both immiscible oil/water separation and emulsion separation with high separation flux and high efficiency (>99.9%). Moreover, the membrane shows an excellent anti-corrosive property in various harsh environment. The present development would provide novel insights into the rational fabrication of MOF-based membranes for on-demand oil/water separation.
研究领域:
材料科学
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环境工程
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2023
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IF 3.3
Binbin Zhang,Huizhong Zhao,Yajie Gao,Qingge Wang,Zhihao Xi,Kui Wang
On the basis of the method used by Reinsch and Solovyeva, the aluminum based MOF material CAU-10-H (CAU stand for Christian-Albrechts-University) was synthesized by multiplying the amount of aluminum sulfate octahydrate and isophthalic acid by 10 times. CAU-10-H (b) is obtained after washing. In order to improve the water vapor adsorption performance of pure CAU-10-H (b), lithium chloride (LiCl) solution was compounded with CAU-10-H (b) by impregnation method to obtain a composite adsorbent CAU-10-H (L) and its adsorption characteristics were studied. The results showed that the composite adsorbent showed good adsorption and desorption performance under test conditions. Among them, the equilibrium adsorption capacity of the composite adsorbent with 33.1% LiCl content is 0.5007 g/g after 30 cycles, which is about 1.675 times of the adsorption capacity of pure CAU-10-H (b) under the same conditions. This shows the potential of the composite adsorbent to be used in the air-water extraction system.
研究领域:
材料科学
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环境工程
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高影响因子
ACS Applied Energy Materials
·
2024
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IF 5.4
Cuicui Li,Tongtong Gao,Wanzhen Wu,Xinpu Zhou,Shuyu Zhang,Guangpeng Ma,Xianfeng Guan,Shuang Wang
A series of composite membranes (sPBIp3-CAUX) are prepared by using modified sulfonated polybenzimidazole with an optimal side link grafting degree of 30% as a polymer matrix and then doping with CAU-10-H. The hydrophobic alkyl side chains and hydrophilic sulfonic acid groups easily form microphase separated structures due to the polarity difference, which is conducive to the enhancement of proton conductivity. The introduction of CAU-10-H into the polymer effectively prevents the passage of vanadium ions because the vanadium ion transport path becomes more tortuous. The sPBIp3-CAU2 membrane has low vanadium permeability (3.1 × 10–9 cm2 min–1) and excellent ion selectivity (9.16 × 106 S min cm–3). In addition, the sPBIp3-CAU2 membrane shows good cell performance at 60 mA cm–2 with CE of 93.32% and EE of 83.03% compared with those of Nafion 117.
研究领域:
材料科学
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电化学
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能源存储
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高影响因子
INORGANIC CHEMISTRY
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2023
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IF 4.6
Enming Ping,Xiaoxiao Chen,Yunshan Zhou,Lijuan Zhang,Lingyun Kong,Nan Chen
In this work, CAU-10-H@γ-AlOOH is prepared, and then UTSA-16 is loaded on CAU-10-H@γ-AlOOH to obtain UTSA-16@CAU-10-H@γ-AlOOH. Using the as-prepared composites as stationary materials by cryogenic gas chromatography at 77 K, while CAU-10-H@γ-AlOOH achieves the complete separation of ortho-H2 (o-H2) and D2 with a resolution R of 1.66 and a separation time t of 9.52 min, UTSA-16@CAU-10-H@γ-AlOOH achieves higher efficiency separation of hydrogen isotopes in a shorter separation time (4.56 min) with R = 1.7. Molecular simulation results show that CAU-10-H has both chemical affinity quantum sieving and kinetic sieving effects for H2/D2 at 77 K, and UTSA-16 can only exert the kinetic sieving effect. UTSA-16’s load on CAU-10-H@γ-AlOOH weakens the adsorption of hydrogen isotopes, and the presence of Co2+ in UTSA-16 promotes the conversion of para-H2 to ortho-H2. In gas chromatography, H2 was preferentially desorbed from the system due to strong D2 adsorption caused by the chemical affinity quantum sieving effect and faster H2 diffusion caused by the kinetic sieving effect. These additive effects achieved efficient hydrogen isotope separation at 77 K.
研究领域:
化学
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材料科学
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Hao Yu,Jiakai Shi,Jiaqi Wen,Shi Liu,Jingyu Cai,Linxi Hou
Permittivity is a key parameter characterising the polarisation capacity of a dielectric, and directly influences a material’s signal transmission and energy storage properties. As electronic devices evolve towards higher frequencies and greater integration, there is an increasing demand for polymer materials that combine low dielectric constant with excellent thermal and environmental stability. In this study, a aluminium-based metal-organic framework material CAU-10-H, which exhibits negative thermal expansion, was synthesised using the hydrothermal method and incorporated into PEEK matrix by hot-press to prepare CAU-10-H/PEEK composite films. The as-obtained CAU-10-H is relatively well dispersed within the PEEK matrix at low-to-moderate filler loadings, while its incorporation is associated with a reduction in the dielectric constant of the composite. The reduced dielectric response is mainly attributed to the introduction of low-polarity nanoporous domains, while the increase in free volume fraction may also contribute to this behaviour. When the filler content is 5 wt%, the composite exhibits a low die This may be attributed to the following factors:lectric constant across the 2–18 GHz frequency range, with an average value as low as 2.45, whilst the thermal decomposition temperature is above 500℃. In addition, this composite material offers moisture resistance, excellent dimensional stability, outstanding frequency stability and good signal integrity. This study provides new insights into the regulation of the high-frequency dielectric properties and stability of polymer composites using microporous materials with negative thermal expansion characteristics. Download: Download high-res image (181KB) Download: Download full-size image Owing to the inherent microporous structure of MOFs and their interaction with the polymer matrix, this composite material achieves a dual reduction in both the dielectric constant and dielectric loss at high frequencies, whilst exhibiting excellent thermal stability and superior moisture resistance.
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高影响因子
Advanced Materials Interfaces
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2025
·Vol. 12
·期 15
·e00421
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IF 4.4
Hengyu Pan,Lingmei Zhu,Huijie Wei,Chang Gao,Maolin Zhou,Tiance Zhang,Qiang Luo,Boyang Tian,Jianhua Wang,Yongping Hou,Yongmei Zheng
A bioinspired spider silk fiber (i.e., PCLC) is presented by introducing the zwitterionic hydrogel poly-[2-(methacryloyloxy)ethyl] dimethyl-(3-sulfopropyl)ammonium hydroxide (PDMAPS) and CAU-10-H used as carriers of hygroscopic salt Lithium chloride (LiCl), and the addition of carbon black (CB) nanoparticles makes the prepared fibers have photothermal effect. PCLC fiber achieves the moisture absorption capacity of ≈1.49 – 1.99 g g −1 after 2 h adsorption at ≈40% relative humidity (RH). The temperature of a single PCLC knot can rise to 46.4 °C for ≈3600 s, and the temperature of a batch of PCLC spider knot fibers can rise to 112.1 °C for ≈3600 s (under ≈1 sun illumination), which has excellent photothermal effect. Water collection is conducted for five consecutive days with a daily collected amount of ≈1.87 g g −1 . The PCLC fiber shows good water vapor adsorption reversibility after 10 consecutive adsorption-desorption cycles, the moisture absorption can be stabilized at ≈1.9 g g −1 , and the water vapor desorption capacity reaches ≈1.73 g g −1 (under ≈1 sun illumination, exhibiting water vapor desorption efficiency of ≈92.1%).
研究领域:
材料科学
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环境科学
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纳米技术
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高分子科学
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化学工程
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高影响因子
危险品化学品经营许可证（带存储）