Journal of Saudi Chemical Society
·
2024
·
IF 5.8
Zhengjie Li,Miao Liu,Chunxia Fang,Huanshu Zhang,Tianyi Liu,Yixian Liu,Heli Tian,Jilong Han,Zhikun Zhang
The widespread use and subsequent accumulation of florfenicol (FFC), a common antibiotic, through the food chain poses significant risks to aquatic ecosystems and human health, necessitating effective strategies for its removal from water bodies. To solve the challenge, herein, we developed a novel aluminum-based metal–organic framework CAU-1, engineered for the efficient adsorption of FFC. CAU-1 contains the plentiful –NH 2 and μ-OH groups with the positively charged on the surface. In the adsorption process, CAU-1 perform hydrogen bonding interactions with FFC’s functional groups (−F, –OH, −Cl, –NH–, and −SO 2 –). Furthermore, the positively charged surface of CAU-1 enhances FFC adsorption via electrostatic attraction together. FFC adsorption equilibrium on CAU-1 is attained within 180 min with a monolayer adsorption capacity of 386 mg/g at 303 K, surpassing most of the reported adsorbents. The exothermic FFC adsorption process on CAU-1 remains largely unaffected by coexisting ions. Additionally, CAU-1 can be efficiently regenerated using a mixed solution of 0.1 M HCl and ethanol–water as an eluent. This work highlights CAU-1’s potential as an effective adsorbent for FFC removal, emphasizing the importance of tuning or designing surface functional groups on adsorbents to boost their adsorption capabilities.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Shujuan Xiao,Xiaowen Huo,Yuxia Tong,Changyi Cheng,Shouwu Yu,Xiaoyao Tan
Metal-organic framework material (MOF) can increase water flux greatly without reducing the retention performance due to its porous structure, large specific surface area and high compatibility with the polymer matrix. There are few studies on the influence of MOF particle size and charge to nano composite membranes. In this study, CAU-1 particles with different average sizes (300, 400 and 800 nm) were synthesized and dispersed in organic solvent to prepare a composite separation membrane for nanofiltration. The effect of MOF particle size on membrane properties was studied. It was found that CAU-1 particles with higher positive charge would lead to the formation of network separation layer structure. The results show that the high charge and large particle size of CAU-1 particles can enhance the membrane flux, but it is easy to cause membrane defects and reduce the retention. Compared with thin-film composite (TFC) membrane, the composite membrane with low charge and small particle size of CAU-1 (300 nm) has better separation performance. Compared with the TFC membrane, the flux increases by 40% with the retention rate unchanged.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 7
·3177-3190
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IF 3.5
Lu Xiaohui,Yu Shouwu,Gao Tian,Chen Yifu,Zhao Xiang,Xiao Shujuan
The wettability of the membrane surface is very important for the separation of oil-in-water emulsion. In this paper, the hydrophilic NH 2 -CAU-1 was added to the membrane surface by interfacial polymerization, which greatly improved the separation efficiency of oil-in-water emulsion. The effect of the amount of NH 2 -CAU-1 on the separation efficiency of TFN membrane was studied, and it was determined that TFN-1 membrane had ultra-high separation efficiency of oil-in-water emulsion (> 97.60%). TFN-1 membrane has a high underwater oil contact angle (higher than 139.53°), resulting in excellent oil adhesion resistance on the membrane surface. The universality and cycling performance of TFN-1 membrane were tested, and UWOCA had good stability under strong acid, strong base and different NaCl concentrations, and the separation efficiency did not change significantly after 8 cycles. The results show that TFN-1 membrane has excellent performance in separating oil-in-water emulsions and has broad application prospects in separating oil-in-water emulsions stabilized by surfactants. Graphical abstract
研究领域:
膜科学
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化学工程
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材料科学
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环境工程
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分离技术
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Zhiyue Wang,Yaru Wang,Shihong Xin,Xueqing Yong,Qixin Wang,Yunlin Chen
Hydrogen (H 2 ) leakage poses critical safety hazards and environmental risks in clean energy systems, driving urgent demands for cost-effective hydrogen sensors with high sensitivity, high selectivity, and rapid response time. Herein, high-performance hydrogen sensor based on photonic crystals (PCs) assembled by CAU-1, nickel (Ni) -doped CAU-1, and TiO 2 are prepared. Comparing with the CAU-1/TiO 2 and CAU-1Ni 15% /TiO 2 PC sensors, CAU-1Ni 25% /TiO 2 PC sensor shows a high sensitivity of hydrogen response to be 0.083 nm/ppm with a good linear relationship in the concentration range of 9–90 ppm hydrogen. Density-functional theory (DFT) adsorption energy calculations quantitatively validate the enhanced hydrogen adsorption capacity through Ni-induced electronic structure modulation. The CAU-1Ni 25% /TiO 2 PC sensor exhibits an ultrafast optical response time of 3 s and a recovery time of 12 s with exceptional repeatability and reliability. Moreover, the CAU-1Ni 25% /TiO 2 PC sensor displays exceptional selectivity toward H 2 by comparing with CO 2 , NH 3 , and O 2 , which is important for practical hydrogen detection applications. This work presents incorporating Ni into CAU-1 enhances hydrogen adsorption energy through electronic structure modulation, enabling the CAU-1Ni 25% /TiO 2 PC to achieve rapid optical sensing response to hydrogen, which establish a new pathway for developing high-efficiency photonic crystal-based optical hydrogen sensors.
研究领域:
材料科学
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光子学
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传感器技术
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纳米技术
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能源安全
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环境监测
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
·
IF 4.9
Suqi Liu,Linjiang Pang,Xiaowei Wu,Shihao Chen,Mingyi Yang,Jiyu Cheng,Guoquan Lu,Zhenhe Wang,Wei Chen,Yuge Guan,Xinghua Lu
Changes in the content of trans -caryophyllene could identify whether sweetpotatoes are infected with black spot disease. Therefore, in this study, a quartz crystal microbalance (QCM) sensor based on modified CAU-1@ZIF-8 was used for non-destructive detection of sweetpotato black spot. The experimental results showed that the constructed sensor performed best when both modified CAU-1 and ZIF-8 were present. The sensor showed a linear trend (R 2 = 0.996, limit of detection (LOD) = 0.55 ppm) in response to trans -caryophyllene in the concentration range of 20–340 ppm with a sensitivity of −0.489 Hz (ppm) −1 . The developed gas sensor was successfully used for the detection of trans -caryophyllene in real samples of sweetpotato. The experimental data showed a significant correlation with the results of gas chromatography-mass spectrometry (GC–MS) with a correlation coefficient of 0.970 ( p < 0.01). Therefore, it could be used for early warning of black spot disease in sweetpotato.
研究领域:
农业科学
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食品科学
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传感技术
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植物病理学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Guangyuan Chen,Linzhen Wu,Zeru Wang,Ruixi Liu,Chuan Tan,Yi Tan,Yawen Liu,Miaomiao He,Hao Zhang,Yikun Huang,Jiongzhi Zhu,Tao Duan,Lin Zhu
The capture of radioactive gaseous iodine is essential for the sustainable development of nuclear energy and the long-term safe supply of nuclear fuel. However, the presence of nitrogen oxides in the exhaust gas generated during spent fuel reprocessing poses significant challenges to the stability of iodine adsorbents. It is crucial to consider the impact of NOx on the structure and adsorption performance of the materials. We report here the development of an aluminum-based metal–organic framework (MOF), CAU-1, engineered for efficient iodine capture. Synthesized through a cost-effective and straightforward method, CAU-1 exhibits excellent structural stability and robust adsorption performance, with a maximum iodine vapor adsorption capacity of 1277.18 mg/g at 130 °C and methyl iodide adsorption capacity of 533.10 mg/g, highlighting its potential for efficient iodine vapor removal. Notably, CAU-1 retains its structural integrity and iodine adsorption performance even in the presence of 5 % NO 2 , maintaining high adsorption capacities for I 2 (1129.41 mg/g) and CH 3 I (436.79 mg/g). Mechanistic analysis revealed the key role of the –NH 2 group in the iodine adsorption process. Additionally, co-adsorption studies with I 2 and NO 2 showed that CAU-1 can still capture iodine in the form of both I 2 and I 3 - in the presence of NO 2 . This study illustrates the potential of CAU-1 as an effective industrial adsorbent for removing iodine from NO 2 -containing gas streams.
研究领域:
材料科学
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核能工程
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环境科学
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2020
·
IF 2.627
Shujuan Xiao,Xiaowen Huo,Shuxin Fan,Kui Zhao,Shouwu Yu,Xiaoyao Tan
To enhance the performance of the polyphenylene sulfone (PPSU) membrane, a novel mixed matrix membrane with hydrophilicity and antifouling properties was prepared. Using PPSU as the basic membrane material, polyvinyl pyrrolidone (PVP) as the porogen, N -Methyl pyrrolidone (NMP) as the solvent, and MOF-CAU-1 (Al 4 (OH) 2 (OCH 3 ) 4 (H 2 N-BDC) 3 · x H 2 O) as the filler, PPSU/CAU-1 mixed matrix membrane (MMM) was prepared by an immersion precipitation and phase transformation technique. By changing the amount of MOF-CAU-1, the properties and performance of the MMM membrane were investigated in terms of hydrophilicity, pore morphology, surface roughness, and dye removal. The results show that the highest pure water flux of the mixed reached 47.9 L·m −2 ·h −1 , when the CAU-1 addition amount was 1.0 wt%, which was 23% higher than that of the pure PPSU membrane. Both the rejection rate and the antifouling performance of the MMM membrane also noticeably improved.
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
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Han Zhang,Lu Wang,Hao Zhang,Zhenjie Gu,Zhihua Qiao,Chongli Zhong
A novel Pebax-based ternary MMM was rationally designed with PEG serving as a dual-functional additive. • Interfacial regulation via PEG modification effectively boosts membrane gas diffusion performance and improves filler dispersion. • The optimized membrane exhibits enhanced C 2 H 6 /C 2 H 4 separation performance with balanced permeability and selectivity. Ethylene (C 2 H 4 ) purification from ethylene-ethane (C 2 H 6 ) mixtures is a crucial process in the petrochemical industry, and membrane separation technology offers a promising solution to overcome the limitations of traditional separation technologies. In this work, a Pebax/PEG/CAU-1-OH ternary mixed matrix membranes (MMMs) was rationally designed and fabricated by incorporating poly(ethylene glycol) (PEG) as a functional additive and CAU-1-OH (a hydroxyl-functionalized ultra-microporous aluminum-based MOF) into the Pebax matrix. The structural properties of CAU-1-OH and the resultant membranes were systematically characterized via X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray Photoelectron Spectroscopy (XPS) and gas adsorption measurements. CAU-1-OH exhibited preferential adsorption for C 2 H 6 over C 2 H 4 with an ideal adsorption solution theory (IAST) selectivity of 3.15, along with a C 2 H 6 adsorption capacity of 91.76 cm 3 g −1 . PEG played a dual role: it disrupted the crystalline structure of Pebax to increase free volume, and acted as a molecular bridge between Pebax and CAU-1-OH via hydrogen bonding interactions, thereby improving the dispersion of CAU-1-OH and enhancing interfacial compatibility. The gas separation performance of the ternary MMMs was evaluated using a C 2 H 6 /C 2 H 4 (50:50, v /v) mixture at 25 °C and 2 bar. Gas permeation tests showed that the Pebax/PEG/CAU-1-OH (20) ternary MMM exhibited a C 2 H 6 permeability of 1533.6 barrer and C 2 H 6 /C 2 H 4 selectivity of 4.76. The hydroxyl groups in CAU-1-OH can form strong hydrogen bonds with C 2 H 6 , leading to a stronger adsorption preference for C 2 H 6 , as supported by DFT calculations. Additionally, the ternary MMM exhibited outstanding long-term stability and pressure resistance, with stable separation performance maintained over 10 days and under various pressures. These results indicate that the Pebax/PEG/CAU-1-OH ternary MMM offers a viable strategy for developing an efficient C 2 H 6 /C 2 H 4 separation materials.
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DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2025
·
IF 3
Zeng Qingbin,Wang Zhen,Guo Qianni,Song Wei,Zhao Xiuchao,Yang Yuqi,Zhou Xin
Hyperpolarized 129 Xe magnetic resonance imaging (MRI) is a powerful tool for detecting respiratory system diseases. However, 129 Xe is an inert gas and lacks specific detection capability. Entrapping xenon within molecular cages to enable specific detection is a challenging task, and numerous molecular cages have been developed and evaluated to address this challenge. Herein, we report that the aluminum-based metal-organic framework, CAU-1, can effectively entrap xenon for hyperpolarized 129 Xe MRI in aqueous solutions. This platform exhibits high water stability and good dispersibility, and shows excellent xenon entrapment capability, even at a concentration as low as 50 µg/mL. Importantly, it is responsive to pH changes across a range from 6.6 to 5.0, making it promising for monitoring the weakly acidic environment in tumors or metabolic abnormality. Furthermore, the scalable and cost-effective production of this molecular cage will facilitate future advancements in molecular imaging and chemical sensing applications.
研究领域:
医学影像学
·
分子生物学
·
材料科学
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产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 22
·7761
·
IF 4.927
Yuhong Li,Jianxiong Tang,Yueli Lin,Jiejun Li,Yaqi Yang,Pengcheng Zhao,Junjie Fei,Yixi Xie
Rutin, a natural flavonol glycoside, is widely present in plants and foods, such as black tea and wheat tea. The antioxidant and anti-inflammatory effects of flavonoids are well known. In this study, a new electrochemical rutin sensor was developed using multiwalled carbon nanotubes/aluminum-based metal–organic frameworks (MWCNT/CAU-1) (CAU−1, a type of Al-MOF) as the electrode modification material. The suspension of multiwalled carbon tubes was dropped on the surface of the GCE electrode to make MWCNT/GCEs, and CAU−1 was then attached to the electrode surface by electrodeposition. MWCNTs and CAU−1 were characterized using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Due to the synergistic effect of CAU−1 and MWCNT-COOH, the prepared sensor showed an ultrasensitive electrochemical response to rutin. Under optimized conditions, the sensor showed a linear relationship between 1.0 × 10−9~3.0 × 10−6M with a detection limit of 6.7 × 10−10M (S/N = 3). The sensor also showed satisfactory stability and accuracy in the detection of real samples.Keywords:electroanalysis;pyrolysis;carbon materials;drug analysis;modified electrode
研究领域:
分析化学
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材料科学
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电化学
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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）