JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Shuting Tian,Yang Bai,Shuangshuang Li,Zuoming Chen,Liyun Zhang,Hongjie Li,Peng Zhou,Yi He
Microsphere layers/nanofibrous membranes decorated with UiO-66-NH 2 as a metal-organic framework (MOF) were successfully obtained by one-step coaxial electrospinning. The coaxially spun dense microsphere/wire-like structure and UiO-66-NH 2 hydrophilic components with excellent hydration ability enabled the prepared membrane to have excellent static and dynamic adsorption capacity for dyes and oil-in-water emulsion separation performance (adsorption capacity >247 mg/g; separation efficiency >99%). What's more, the membrane can purify complex wastewater dynamically and efficiently (separation efficiency >99%). After the membrane was desorbed in ethanol and methanol, the reversible recovery rate was as high as 98%, indicating its excellent recyclability. In a word, the as-prepared membrane has broad prospects in the remediation of complex polluted water bodies containing dyes-oil.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCES IN POLYMER TECHNOLOGY
·
2022
·
IF 2.502
Qing-Chun Chen,Yu Bang,Lu Li,Hui-Yu Deng
Owing to the specific porous structure which could provide additional passage channel for some molecules, metal organic frameworks are attractive candidates for enhancing permeability and selectivity of membranes in pervaporation, reverse osmosis, and gas separation. In this experiment, Ag@UiO-66-NH2 was introduced into polyamide separation layer by interfacial polymerization of triethylenetetramine and 1,3,5-benzenetricarboxylic acid chloride for nanofiltration. The results indicated that Ag@UiO-66-NH2 nanoparticles did endow the membranes with rapid diffusion pathways for water molecules. When the content of Ag@UiO-66-NH2 was 0.03 g, the prepared membrane (NF-Ag-3) showed high flux about 47.3 L·m-2·h-1 at 0.6 MPa, which is about 2-fold higher than that of polyamide membrane without Ag@UiO-66-NH2, while the MgSO4 rejection rate remained about 87.4%. The membrane also showed excellent antifouling properties, and the water flux recovery ratio was 95.6% after filtration BSA solution. When it was applied for 50 mg/L bisphenol A removal, the rejection rate reached 94.6%, and the flux is about 49.1 L·m-2·h-1. Moreover, Ag particles on UiO-66-NH2 rendered the membrane with good inhibition for Escherichia coli. The antibacterial rate of the membranes is above 95% when the loading of Ag@UiO-66-NH2 is more than 0.03 g.
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2022
·
IF 5.546
Shuang Han,Yuzhuo Song,Shiwei Liu,Le Zhao,Ruonan Sun
The preparation of synthetic drug delivery systems free of antibody modifications that can effectively recognize tumor sites and control drug delivery is essential for cancer therapy. In this study, UiO-66 metal–organic framework (MOF) modified with amino and phenylboronic acid groups was used as substrate to load the anti-cancer drug doxorubicin (DOX). Then a molecularly imprinted polymer (UiO-66-DOX@MIP) with sialic acid (SA) as the template molecule was further prepared on the surface of the synthesized nanoparticles using surface molecular imprinting technique (MIT). This polymer combines the excellent properties of UiO-66 and molecularly imprinted polymer (MIP). It was simple to prepare, economical and easy to obtain, and had a regular morphology. UiO-66-DOX@MIP containing molecularly imprinted binding sites that match the template molecule SA, could specifically recognize target tumor cells. The imprinted layer prevented drug leakage in normal body fluids while degrading and drug release under tumor microenvironment, with pH and glutathione (GSH) dual-responsive drug release properties. The UiO-66-DOX@MIP showed excellent biocompatibility and great cellular uptake efficiency to cancer cells without influence of interfering substances.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Lan Ma,Yan Wan,Teng Wang,Yaling Liu,Ying Yin,Liyun Zhang
Developing the high-anti-fouling membrane has kept continuous attention in oil/water emulsion treatment. However, the majority of works on anti-fouling membranes mainly focused on low-viscosity oils, which greatly limited the development and application of a membrane to face the real crude oil wastewater. Inspired by the hydrophilicity of sodium carboxymethyl cellulose (CMC) and zirconium base metal–organic frame (Zr-MOF), an anti-oil-fouling CMC/UiO-66-NH2 composite membrane was constructed by a self-assembly method. Profiting from the hydrophilicity and micro-nanostructure of the CMC/UiO-66-NH2 layer, the obtained CMC/UiO-66-NH2 membranes displayed underwater superoleophobicity and desired oil resistance. It could display the effective separation capability with 1282 ± 62 to 6160 ± 81 L/(m2·h·bar) and above 99.08% toward the different light oil emulsions. More importantly, the CMC/UiO-66-NH2 membrane displayed ultralow crude oil adhesion behaviors toward the crude oil emulsions, which could achieve a considerably high flux (746 ± 60 to 5224 ± 87 L/(m2·h·bar)). Furthermore, electrostatic interaction and physical enwinding–wrapping between CMC and UiO-66-NH2 also endowed the composite membranes with outstanding stability. After immersing the as-prepared membranes into the harsh environments for 24 h, the membranes still maintained high underwater–oil contact angles (UWOCA > 155°) and separation ability (oil rejection was above 99.0%). Therefore, CMC/UiO-66-NH2 composite membranes could demonstrate promising prospects in real oily emulsion treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Xuesheng Liu,Junsu Jin,Hong Meng
In this study, we successfully synthesized a novel composite material UiO-66/polyacrylate (UiO/PA) by suspension polymerization and in situ growth of metal–organic frameworks (MOFs). Due to the control of heterogeneous nucleation and firm growth, nano-UiO-66 with a diameter of only 400 nm has been reduced by about 90%, resulting in lower transfer resistance, effective separation of photogenerated carriers, and more catalytic active sites exposed. Under visible light irradiation, UiO/PA with 48.7% loading can almost completely degrade rhodamine B (RhB) in 120 min and the corresponding degradation rate constant of RhB reached 0.0203 min–1 from 0 min–1. After easy filtration and five cycles, the degradation rate is still above 85%. This study can provide new insights into effectively improving the photocatalytic performance of MOFs.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2022
·
IF 6.556
Yi Wu,Keren Lu,Fubin Pei,Yanghao Yan,Shasha Feng,Qingli Hao,Mingzhu Xia,Wu Lei
The wide clinical application of d -penicillamine (D-PA) makes it inevitably accumulates in the environment, seriously threatening human health and the ecological environment. To better supervisory control D-PA, a highly sensitive and reliable photoelectrochemical (PEC) sensor based on gold nanoparticles (Au NPs) loaded on graphitic carbon nitride sheet and hexagonal NH 2 -UiO-66 composite (g-C 3 N 4 /Au/NH 2 -UiO-66) was synthesized. Tactfully using the strong bonding between D-PA and Au NPs and the effective carrier separation of Z-scheme heterojunction, the designed g-C 3 N 4 /Au/NH 2 -UiO-66 PEC sensor without an extra recognition unit exhibited a selective and sensitive photocurrent to D-PA. With the aid of UV diffuse reflectance spectra (UV-DRs), electron paramagnetic resonance (EPR) characterization, and free radical capture experiments, the electron transfer path of the PEC sensing system was deduced. The proposed g-C 3 N 4 /Au/NH 2 -UiO-66 PEC-based sensor achieved a low detection limit of 0.0046 μM (S/N = 3) with a wide linear response ranging from 10 nM to 400 μM. In addition, its good stability and selectivity also laid a good foundation for practical applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Rong Shang,Qizhao Zhang,Peng Lin,Bang Gu,Qinghu Tang,Qiue Cao,Wenhao Fang
Direct oxidative coupling of alcohols and amines is an environmental-benign and atomic-economy approach for imine synthesis. We disclosed that UiO-66 framework successfully confined Ru to single-atom scale with assistance of oxophilic Zn 2+ promoter. This RuZn@UiO-66 catalyst showed a highest TOF of 78 h -1 among all Ru catalysts in literature and attained > 99% yield to benzylideneaniline in the model reaction in an O 2 atmosphere at a low temperature without alkaline additives. In addition, this catalyst demonstrated satisfying gram-scale imine synthesis, wide substrate scope and stable reusability. Kinetic investigations and in situ characterizations allowed getting insights to active sites, amphoteric carrier and reaction mechanism. Dynamic interactions between Ru and Zn based on their ratios induced electron-deficient Ru 0 active sites promoted by oxophilic Zn 2+ species. Hence, primary alcohols can be efficiently converted to the corresponding aldehydes using molecular O 2 , i.e. , the rate-determining step. Besides, Zr 4+ -O 2- pairs on UiO-66 provided adequate acidic-basic sites for the tandem catalysis.
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2022
·Vol. 147
·期 17
·3867-3875
·
IF 5.227
Fangfang Yu,Yihan Wang,Tengfei Liu,Xiaohui Liu,Hui Jiang,Xuemei Wang
Hypochlorite plays a vital role in biological systems and our daily life. The rapid and convenient detection of hypochlorite is imperative and significant for disease treatment and human health. In this work, EY/UiO-66-NH2 (EY = eosin Y) was prepared through a hydrothermal process and could be applied to the detection and bioimaging of hypochlorite as a self-calibrating sensing nanoprobe. EY/UiO-66-NH2 features two emissions at 432 nm and 533 nm, and the emission intensity of 533 nm is enhanced with increasing ClO− concentration. EY/UiO-66-NH2 could be utilized as a ratiometric fluorescence sensor of ClO−. The linear range of EY/UiO-66-NH2 towards ClO− is 0.1–200 μM and its detection limit is 46.4 nM. In comparison with previously reported probes for ClO−, EY/UiO-66-NH2 has the advantages of a wide linear range, low detection limit, turn-on fluorescence and ratiometric response. This work provides a new method for ClO− detection in living cells.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Zhi-Juan Zhang,Peng-Wei Li,Lu-Ping Liu,Li-Hua Ru,Han-Xiao Tang,Wei-Sheng Feng
The analysis of breath VOC biomarkers is an efficient method for the early diagnosis of lung cancer. In this work, the zirconium UiO-66 was post-synthetically modified by using methylamine (MA), ethylenediamine (ED) and N,N′ -dimethylethylenediamine (MMEN), respectively. The modified UiO-66 materials were thoroughly characterized, including PXRD , FTIR, TGA , physical adsorption at 77 K by nitrogen and photoluminescence analysis. The sensing properties of the modified UiO-66 materials toward the selected five potential breath VOC biomarkers were investigated. Results showed that after modification, the BET surface area and total pore volume all decreased, and followed the order: UiO-66 > UiO-66-MA > UiO-66-MMEN > UiO-66-ED. Furthermore, the N–H group was successfully grafted into the modified UiO-66 samples. In comparison with UiO-66, the fluorescence intensities of UiO-66-MA, UiO-66-ED and UiO-66-MMEN toward hexanal , styrene and isoprene all obviously increased, while the fluorescence intensities of the modified UiO-66 materials toward 1-propanol and ethylbenzene all decreased a lot, accompanied by the frequency shift. In addition, the LOD of hexanal on UiO-66-MA was calculated to be as low as 12 ppm, which was obviously lower than that of UiO-66 (31 ppm). The fluorescence quenching of hexanal was mainly due to the FRET mechanism. The results of this study would provide information for the development of early breath diagnosis of lung cancer.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2021
·Vol. 28
·期 6
·1737-1747
·
IF 2.496
Jiang Haoxi,Zhao Yingying,Lin Jing,Chen Yifei,Wang Sheng
Highly dispersed palladium nanoparticles (NPs) supported on UiO-66 as catalyst for CO 2 methanation were prepared by supercritical fluid deposition (SFD). As a result, the most suitable Pd precursor salt and co-solvent are Na 2 PdCl 4 and ethanol/DMF, respectively. The best SFD process condition to deposit the Pd precursor on UiO-66 is 40 °C, 10 MPa and 2 h. Under the above condition, 4% Pd/UiO-66 exhibits the highest activity with 53% of CO 2 conversion and 95% of CH 4 selectivity while the turnover frequency (TOF) value is 3669.4 h −1 . The catalysts were characterized by XRD, BET, TEM, XPS, TGA, CO-DRIFTS and ICP-OES to investigate the structure–activity relationship. The 4% Pd/UiO-66 with the average size of 2.2 nm of Pd prepared in assistance of supercritical fluid behaved the similar activity as the 6%Pd/UiO-66 with average size of 9.7 nm of Pd prepared by sol–gel method. It is showed prospect of technique for reducing noble metal loading resulting from high dispersion effect.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Peng Liu,Xin Li,Xuechao Xu,Xiangheng Niu,Mengzhu Wang,Hengjia Zhu,Jianming Pan
Detection of pesticide residues is important because it is related to food and environmental safety. Although lots of sensors have been developed and applied for pesticide analysis, most of them rely on the use of vulnerable bioenzymes, weakening the highlights of these sensors. Here we recommend a bioenzyme-free colorimetric assay of malathion, a typical organophosphorus pesticide, based on the analyte inducing the oxidase-mimicking activity loss of Ag 3 PO 4 /UiO-66. Compared to counterparts, the Ag 3 PO 4 /UiO-66 composite can provide enhanced oxidase-mimetic catalytic activity to trigger the 3,3′-tetramethylbenzidine chromogenic reaction with the participation of dissolved O 2 . When malathion exists, it rapidly adsorbs onto the composite surface via their unique interactions and significantly shields the oxidase-like activity of Ag 3 PO 4 /UiO-66, thus affecting the catalytic chromogenic reaction. With such a principle, sensing of malathion in a wide linear range (0.0083–5.333 μg/mL) was realized with a detection limit 7.5 ng/mL. Given no biological elements were involved in the proposed assay, it exhibited robust and reliable performance in determining malathion in practical samples. Furthermore, a chromogenic hydrogel-based smartphone sensing system was developed for instrument-free on-site analysis of malathion. With good analytical performance and facile operation, our assay and device will find promising applications in phosphothionate pesticide determination.
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2021
·Vol. 6
·期 14
·3370-3377
·
IF 2.109
Kazem Karami,Ali Mardaniboldaji,Mohammad R. Rezayat,Parvaneh Bayat,Mohammad T Jafari
Graphical New UiO-66-NH 2 /Gly/GO nanocomposite solvothermally synthesised and characterized by techniques such as FTIR, XRD, EDAX, TGA, TEM and SEM. Nanocomposite has been exploited as an adsorbent in solid phase microextraction (SPME) method and also the pesticide chlorpyrifos as an organophosphorous pesticide is selected for the model compound. As for a determination system, Corona discharge ionization-ion mobility spectrometry (CD-IMS) has been employed. This paper seeks to produce UiO-66-NH 2 /Gly/GO nanocomposite, which is solvothermally synthesised by the “prefunctionalisation” approach using 2-aminoterephthalic acid as an organic linker in a Teflon lined autoclave and its linking to a graphene surface by glycine and finally characterized by methods such as FTIR spectrometer, Powder X-ray diffraction (XRD), energy dispersive X-ray analysis (EDAX), thermal stability measurement (TGA), transmission electron microscope (TEM), scanning electron microscope (SEM) and the Brunauer-Emmet-Teller (BET). UiO-66-NH 2 /Gly/GO nanocomposite has been exploited as an adsorbent in solid phase microextraction (SPME) method and also the pesticide chlorpyrifos as an organophosphorous pesticide is selected for the model compound. As for a determination system, Corona discharge ionization-ion mobility spectrometry (CD-IMS) has been employed. The nanocomposite capability in extracting the target analyte before and after the coating of the GO has been experimentally investigated. The IMS sensitivity has been strikingly increased in the course of using the GO as the nanocomposite coating. In order to increase the extraction efficiency and preconcentration of the analyte, both extraction temperature and time are scrutinized. All through this method, analysis factors are achieved as follows: linear dynamic range (LDR); 0.5-20.0 μg L −1 , correlation coefficient (R 2 ); 0.9992, the limit of quantification (LOQ); 0.5 μg L −1 , and limit of detection (LOD); 0.15 μg L −1 . On the whole, the proposed approach seems to be regarded as a successful method for analyzing the organophosphouros pesticide.
✓ 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）