CRYSTENGCOMM
·
2012
·Vol. 14
·期 17
·5487-5492
·
IF 3.842
Feng Zhang,Xiaoqin Zou,Fuxing Sun,Hao Ren,Yuan Jiang,Guangshan Zhu
A thin film of MIL-53(Al) on the activated Al slice has been prepared successfully. The crystals in the films exhibit high phase purity and a preferential orientation with straight channel network (or (h0l) planes) of the crystals parallel to the support surface, which are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The loading of organic (2-(2-hydroxyphenyl)-pyridine) (PP) fluorescent molecules in the film has been accomplished. The behaviours of the fluorescent molecules assembled in the pores of the oriented crystals are probed by Fourier transform infrared (FT-IR) and fluorescence spectroscopies.
研究领域:
材料科学
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纳米技术
·
生物医学工程
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药物递送
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表面科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xin-Ru Chen,Heng Mao,Qiu-Ying Zhang,Wei-Min Liu,Shen-Hui Li,Qian-Qian Li,Li-Hao Xu,Yan-Mei Zhang,Xin-Yue Zhang,Jun-Jie Liu,Ao Kou,Zhi-Ping Zhao
Interfacial engineering in mixed matrix membranes (MMMs) is essential to attain superior separation performance and ensure long-term operational stability. In this research, a range of novel MMMs were designed and fabricated for pervaporation (PV) separation of n-butanol/water solution by introducing the MIL-53(Al) particles and three variants (i.e., MIL-53(Al)–NH 2 , MIL-53(Al)–NO 2 , MIL-53(Al)–OH) into PEBA polymer matrix. These four MIL-53(Al) counterparts were synthesized via a microwave-assisted solvothermal method by selectively functionalizing the terephthalic acid linkers with different chemical groups. The functional MIL-53(Al) variants were employed to explore the relationship between membrane microstructures and PV performance by manipulating the interfacial interactions with PEBA matrix. The findings reveal that incorporating MIL-53(Al) variants not only displayed excellent interfacial compatibility and uniform dispersion within PEBA matrix, but also constructed the preferential transport pathways for n-butanol over water molecules. Impressively, in a 1 wt% n-butanol aqueous solution at 40 °C, the resultant membrane attained a permeation flux of 1483.3 g·m -2 ·h -1 and a separation factor of 18.1. Compared to the PEBA/PVDF membrane, the total flux was enhanced by 17.1 %, and the separation factor was improved by 46.4 %. Moreover, the embedding MIL-53(Al) variants boosted thermal and mechanical properties of the membrane, endowing it with considerable potential for practical applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2016
·
IF 2.567
Huimin Ruan,Changmeng Guo,Hongwei Yu,Jiangnan Shen,Congjie Gao,Arcadio Sotto,Bart Van der Bruggen
This study reports the fabrication of mixed matrix membranes (MMMs) using immersion precipitation phase inversion for promising application in desalination of dye solutions. Aromatic poly(m-phenylene isophthalamide) is used as the polymer material, and the metal–organic framework MIL-53(Al) is added to develop integrally skinned asymmetric membranes. Successful dispersion of MIL-53(Al) particles into the membrane-separating layer is confirmed by scanning electron microscopy. The optimum performance of the membranes is obtained at 0.5 wt % MIL-53(Al) concentration. In particular, the M-0.5 membrane is planned for use in separating dye/salt aqueous mixtures. It is observed that the M-0.5 membrane has a rejection for NaCl and Na2SO4 below 11% and 37%, respectively, in mixed salt/dye solutions. Additionally, the M-0.5 membrane is found to have a rejection rate of 83.9%, 98.3%, and 99.8% for nitroso-R salt, xylenol orange, and ponceau S, respectively, in mixed Na2SO4/dye solutions. The rejection rate for Na2SO4 is lower than that of some commercial nanofiltration membranes (NF90, NF270, and DK). The membrane is promising for dye desalination in industrial-scale applications.
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 BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Le Zhong,Yuxiao Feng,Zichen Wang,Tian Tian,Yali Bi,Jiandong Cui
Enzymatic synthesis of flavor esters is crucial for applications in food, beverage, and cosmetics industries. However, the poor activity and stability of free lipase hinder these reaction. Inspired by the concept of lipase interface activation, MIL-53(Al)-NH 2 was modified with alkyl acid anhydrides of varying chain lengths to tailor its hydrophobicity, and Candida Rugosa lipase (CRL) was subsequently immobilized on this surface to achieve efficient interface activation. The resulting CRL@MIL-53(Al)-AM11 exhibited 3.5 times higher activity than the unmodified CRL@MIL-53(Al)-NH 2 . Moreover, CRL@MIL-53(Al)-AM11 enabled one-step purification of crude CRL via selective adsorption. It also showed enhanced storage and thermal stability as well as higher resistance to protease degradation and denaturants than free CRL. CRL@MIL-53(Al)-AM11 retained 75 % of its initial activity after 30 min treatment at 55 °C, whereas the free CRL retained only 41 %. After 11 days of storage, CRL@MIL-53(Al)-AM11 maintained 70 % of its initial activity, in contrast to 36 % for the free lipase. Notably, CRL@MIL-53(Al)-AM11 achieved a 97 % conversion rate in the esterification synthesis of the flavoring substance (butyl butyrate) within 24 h and retained over 40 % conversion after five consecutive cycles. Therefore, this strategy offers a feasible approach for constructing high-performance immobilized lipases for flavor ester synthesis.
研究领域:
生物化学
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食品科学
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酶工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 24
·8540-8548
·
IF 4.39
Zixuan Li,Deyi Zhan,Abdul Saeed,Nanjing Zhao,Junfeng Wang,Weihong Xu,Jinhuai Liu
Due to their ultra-thin morphology, larger specific surface area and more exposed active sites, two-dimensional (2D) metal–organic framework (MOF) nanosheets can break the limitations of three-dimensional (3D) MOFs in sensitivity, response speed and the limit of detection for sensing applications. In this work, fluorescent NH2-MIL-53(Al) nanosheets were developed as a fluoride detection sensor compared with the 3D bulk counterpart. The morphological and structural characteristics of the obtained products were systematically characterized, and the favourable chemical and fluorescence stability of the NH2-MIL-53(Al) nanosheets were explored. The fluorescent NH2-MIL-53(Al) nanosheets showed high sensitivity, fast response speed (as short as 10 seconds), low limit of detection (15.2 ppb), and wide linear detection range (5–250 μM), and all performances were better than those of their bulk counterpart. In addition, the sensing mechanism was investigated to be based on the transformation of the NH2-MIL-53(Al) framework that induced the release of fluorescent ligands, resulting in an exceptionally enhanced fluorescence. This work highlights the advantages of 2D MOF nanosheets in fluorescence sensing applications.
研究领域:
材料科学
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化学传感器
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光学检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Hao Li,Canyuan Lin,Ruhui Ma,Yuancai Chen
In this study, the selective adsorption of aromatic compounds on mesoporous MIL-53(Al) was investigated, and followed the order: Biphenyl (Biph) > Triclosan (TCS) > Bisphenol A (BPA) > Pyrogallol (Pyro) > Catechol (Cate) > Phenol (Phen), and exhibited high selectivity toward TCS in binary compounds. In addition to hydrophobicity and hydrogen bonding, π–π interaction/stacking predominated, and more evidently with double benzene rings. TCS-containing halogens could increase π interaction on the benzene rings via forming Cl–π stacking with MIL-53(Al). Moreover, site energy distribution confirmed that complementary adsorption mainly occurred in the Phen/TCS system, as evidenced by Δ Q pri (the decreased solid-phase TCS concentration of the primary adsorbate) < Q sec (the solid-phase concentrations of the competitor (Phen)) . In contrast , competitive sorption occurred in the BPA/TCS and Biph/TCS systems within 30 min due to Δ Q pri = Q sec , followed by substitution adsorption in the BPA/TCS system, but not for the Biph/TCS system, likely attributed to the magnitude of energy gaps (E g ) and bond energy of TCS (1.80 eV, 362 kJ/mol) fallen between BPA (1.74 eV, 332 kJ/mol) and Biph (1.99 eV, 518 kJ/mol) according to the density-functional theory of Gaussian models. Biph with a more stable electronic homeostasis than TCS lead to the occurrence of substitution adsorption in the TCS/BPA system, but not in the TCS/Biph system. This study provides insight into the mechanisms of different aromatic compounds on MIL-53(Al).
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Liwei Sun,Meilin Yin,Zhen Li,Shaokun Tang
To alleviate environment issues derived from CO 2 emission, developing effective and economical methods for CO 2 capture has attracted much attention for decades. Metal-organic frameworks possess high porosity and stability, which is favorable to the adsorption of small molecules. Herein, an aluminum-based MOF, aluminum terephthalate [MIL-53(Al)], was synthesized with H 2 O and N , N′ -dimethylformamide as co-solvent via microwave-assisted method for CO 2 adsorption. The parameters including pre-mixing mode, microwave temperature, microwave power and reaction time were varied to study their influences on crystal structure, morphology and CO 2 adsorption capacity of MW-MIL-53(Al). Wherein, MW-MIL-53(Al) prepared with pre-mixing mode of stirring at 130 °C, 200 W and 3 h presents high crystallinity and rod-like morphology. The synthesized MW-MIL-53(Al) possesses relatively high BET surface area (961 m 2 /g), pore volume (0.46 cm 3 /g) and thermal stability (up to 480 °C), and its CO 2 adsorption capacity is 2.16 mmol CO 2 /g adsorbent under 25 °C and 0.1 MPa, which is higher than CS-MIL-53(Al) synthesized via conventional solvothermal method at 130 °C for 48 h.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Yuhao Che,Wenhui Li,Chunqi Wang,Xuemin Zhang,Zilei Guo,Aziz Bakhtiyarovich Ibragimov,Junkuo Gao
The development of materials with superior thermal insulation and flame retardancy is critical for industrial applications and daily life. Metal–organic framework (MOF)@poly(vinyl alcohol) (PVA) (MOF@PVA) aerogel composites have demonstrated remarkable thermal insulation and flame retardancy properties. In this work, MIL-53(Al) was directly mixed with PVA and formed by freeze-drying, and the influence of the pore structure on the thermal insulation and flame retardancy properties of the materials was investigated. The incorporated MIL-53(Al) nanoparticles introduced abundant micro- and mesopores, enhancing the complexity of the pore structure and improving the thermal insulation and flame retardancy properties of the aerogels. The directionally freeze-cast aerogel achieved a thermal conductivity of 0.040 W·mK–1, and maintained excellent thermal insulation ability even at 220 °C. Furthermore, the aerogel exhibited nonflammable and self-extinguishing characteristics. This environmentally friendly manufacturing method provides new ideas for the design of MOF-based composites, thereby expanding their application areas.
研究领域:
材料科学
·
化学工程
·
热能工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2013
·
IF 5.695
Cheng-Xiong Yang,Hu-Bo Ren,Xiu-Ping Yan
Fluorescent metal–organic frameworks (MOFs) have received great attention in sensing application. Here, we report the exploration of fluorescent MIL-53(Al) for highly selective and sensitive detection of Fe3+ in aqueous solution. The cation exchange between Fe3+ and the framework metal ion Al3+ in MIL-53(Al) led to the quenching of the fluorescence of MIL-53(Al) due to the transformation of strong-fluorescent MIL-53(Al) to weak-fluorescent MIL-53(Fe), allowing highly selective and sensitive detection of Fe3+ in aqueous solution with a linear range of 3–200 μM and a detection limit of 0.9 μM. No interferences from 0.8 M Na+; 0.35 M K+; 11 mM Cu2+; 10 mM Ni2+; 6 mM Ca2+, Pb2+, and Al3+; 5.5 mM Mn2+; 5 mM Co2+ and Cr3+; 4 mM Hg2+, Cd2+, Zn2+, and Mg2+; 3 mM Fe2+; 0.8 M Cl–; 60 mM NO2– and NO3–; 10 mM HPO42–, H2PO4–, SO32–, SO42–, and HCOO–; 8 mM CO32–, HCO3–, and C2O42–; and 5 mM CH3COO– were found for the detection of 150 μM Fe3+. The possible mechanism for the quenching effect of Fe3+ on the fluorescence of MIL-53(Al) was elucidated by inductively coupled plasma-mass spectrometry, X-ray diffraction spectrometry, and Fourier transform infrared spectrometry. The specific cation exchange behavior between Fe3+ and the framework Al3+ along with the excellent stability of MIL-53(Al) allows highly selective and sensitive detection of Fe3+ in aqueous solution. The developed method was applied to the determination of Fe3+ in human urine samples with the quantitative spike recoveries from 98.2% to 106.2%.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Meipeng Jian,Xiaoqin Yang,Congxin Huang,Chaochun Tang,Xiwang Zhang,Ruiping Liu,Haiyan Li
Flexible metal–organic frameworks (MOFs) with the gate opening feature can optimize the removal efficiency on the adsorption behavior by accommodating to the specific target molecules. In this study, a flexible MOF denoted as NH 2 -MIL-53(Al) was investigated to remove Hg(II) from water, in which the adsorption capacities of large-pore NH 2 -MIL-53(Al) (NH 2 -MIL-53(Al)-LP) for Hg(II) reached 433.20 mg/g, which is about 4 times higher than narrow-pore NH 2 -MIL-53(Al) (112.75 mg/g). Further, the kinetic experiment also revealed that nearly 90 % Hg(II) can be captured within 60 min for NH 2 -MIL-53(Al)-LP. Advanced characterizations and density functional theory calculations demonstrated that the strong coordination of the amino and oxygen centers on NH 2 -MIL-53(Al)-LP to Hg(II). Importantly, molecular dynamic simulation verified the gate opening effect of NH 2 -MIL-53(Al)-LP, as the faster diffusivity of Hg(II) ions in NH 2 -MIL-53(Al)-LP was observed. This work provides another opportunity in designing the pore geometry of porous materials for water remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Cong Xie,Xiao Zhang,Wenbin Shi,Ping Yang
The poor stability of perovskite nanomaterials exposed in high temperature, moisture, light radiation, and polar solvent conditions severely restrict their commercial application. To address this issue, the growth in situ of CsPbX 3 (X = Cl, Br, I) nanocrystals (NCs) is carried out by using the stable aluminum (Al)-based metal-organic frameworks to create CsPbX 3 @MIL-53(Al) composites. Compared with pristine CsPbX 3 NCs prepared using room temperature ligand assisted re-precipitation synthesis, the CsPbX 3 @MIL-53(Al) composites exhibit narrow photoluminescence (PL) spectra and greatly improved stability. The green emitting CsPbBr 3 @MIL-53(Al) composite exhibit narrowed PL spectrum (the full width at half-maximum of PL spectra: 20 nm for the composite and 28 nm for CsPbBr 3 NCs) and a blue-shifted PL peak wavelength (517.6 nm for the composite and 527.6 nm for the CsPbBr 3 NCs). The relationship of microstructure, components, PL, fluorescence lifetime, and stability are discussed systematically. Anomalous stability against heat-treatment, polar solvent and humidity conditions indicated the composites retained their initial PL intensity after storge more than 4 months in ambient conditions and heat-treated to 120ºC for 5 cycles. The emitting color of CsPbBr 3 @MIL-53(Al) composites are easily adjusted from blue, green to red by controlling the halide components of precursors. The composite was used to create emitting coating and highly bright flexible emitting films which also reveal high stability, suggesting that in situ encapsulation of CsPbX 3 NCs in MIL-53(Al) would supply a novel platform for various emitting devices.
研究领域:
材料科学
·
纳米技术
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 36
·9465-9471
·
IF 5.256
Ting Lu,Hongjie Song,Xiaoqun Dong,Jianyu Hu,Yi Lv
NH2-MIL-53(Al) nanorods studded with F− were successfully synthesized via coordination modulation with HF as a modulator. The investigation of the growth mechanism pointed out that F− plays a key role in the formation process. The incorporation of F− into the framework of NH2-MIL-53(Al) not only made the crystal morphology tunable but also magnified the fluorescence enhancement performance of NH2-MIL-53(Al) in water vapor, based on which a highly efficient humidity sensor was fabricated. Among different kinds of humidity sensors, the present sensing system stood out due to its fast response rate, good sensitivity and high selectivity with a low detection limit of 0.6 μg mL−1 (S/N = 3) and a wide detection range from 4 to 40 μg mL−1. On the other hand, a majority of the conventional electronic humidity sensors seriously suffered from temperature dependence, while the present sensing system got over this disadvantage. Therefore, the NH2-MIL-53(Al) nanorod layer-based fluorescence sensing system has the potential for application in the real-time monitoring of humidity under ambient conditions.
研究领域:
材料科学
·
化学工程
✓ 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）