SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jingling Gong,Bin Xiang,Ruirui Jin,Zhaoyang Li,Weimin Liu,Jian Li
Membrane fouling is a key challenge to the sustainable operation of oil–water separation membranes. Constructing a stable hydration layer on the membrane surface as an oil-fouling resistance barrier by modulating the physicochemical structure of the membrane is one of the most effective strategies. Herein, inspired by the petal structure in nature, Cu 3 (PO 4 ) 2 and UiO-66-NH 2 particles were combined by a self-assembly strategy to construct CUP (Cu 3 (PO 4 ) 2 /UiO-66-NH 2 /PVA) composite membranes with anti-fouling capability against viscous crude oil. Benefiting from the petal structure and abundant polar groups within the membrane, the as-prepared membrane could easily combine with water molecules to form a stable hydration layer, which acted as a barrier to hinder the oil contamination of the membrane. Further, the hierarchical flower-like structure was conducive to the improvement of the emulsion breaking rate and permeation flux of oil-in-water emulsions. After 60 min continuous cross-flow separation, the obtained CUP composite membrane still remained prominent separation efficiency (99.6 %) and permeate flux (4685.96 LMH/bar). In addition, the CUP composite membranes showed outstanding resistance to acid and alkali as well as abrasion. This study provides an effective method for the advancement of high-performance membranes with high flux and anti-fouling capability in the flied of oily wastewater treatment.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yue Wang,Wenjun Zhang,Yanjun Zhang,Meng Chen
Metal-organic frameworks (MOFs), with tunable morphologies and porous architectures, show great potential in photocatalysis. A variety of MOFs can be synthesized by changing the types of metal ions and organic ligands. However, fewer studies have explored the influence of the metal-to-ligand molar ratio on the catalytic performance of the resulting MOF-related products. In this work, capsule-shaped NH 2 -MIL-68(In)/InOOH composites were synthesized by adjusting molar ratios of In(NO 3 ) 3 to 2-aminoterephthalic acid. Time-dependent characterization revealed sequential crystallization: rod-shaped NH 2 -MIL-68(In) initially formed in the solution, followed by the in-situ growth of InOOH nanowires on its surfaces via excess indium ions, ultimately constructing a Z-scheme heterojunction. The optimized NM/InOOH (8:1) composite exhibited a larger specific surface area and extended light absorption. The Z-scheme configuration significantly promoted charge carrier separation efficiency while maintaining strong redox potentials of the photoinduced holes and electrons, thereby resulting in 5–8-fold improvement in degradation rates for four dyes (AOII, RhB, MB, and Rh6G), highlighting its broad photocatalytic applicability.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xiaoxia Liang,Jiakang Duan,Yu Tian,Yue Han,Zewan Qin,Huixia Zhu,Yating Lu,Dongyu Nie,Yingna Guo,Xia Yang
AgCl/Ag 0 shows great promise for the removal of environmental pollutants, while its photocatalytic performance is still a great challenge on account of the agglomeration. Herein, orientational deposited and octahedral AgCl/Ag 0 were obtained by etching the UiO-66-NH 2 template for the first time. The 0.35:1–AgCl/Ag 0 exhibited outstanding efficiency in the degradation of Diazinon (DZN), which was closely 300 times than that of UiO-66-NH 2 and 0.35:1–AgCl@Ag 0 prepared without a template. Its bigger surface area provided more active sites to promote mass transfer efficiency and large amounts of •OH and 1 O 2 were fabricated to offense specific positions of DZN determined through Fukui function. Meanwhile, a high removal rate of 91.0 % was obtained after 5 recycles. Finally, the results of HPLC-MS, T.E.S.T., TOC and IC indicated all intermediates had less toxicity than DZN and were rapidly mineralized. Our work developed a new strategy for designing superb performance AgCl/Ag 0 photocatalysts.
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Hao Yang,Yi Liu,Hao Chen,Hua Li
Epoxy resin coatings are widely used for corrosion protection due to their cost efficiency, strong chemical durability and favorable mechanical strength. Antifouling agents have also been commonly applied to epoxy coatings for further antifouling function. However, due to the lack of reliable control of continuous release of the antifouling agents, the antifouling effect and service life keeps elusive. This study used a zinc-based metal organic framework ZIF-8 as a nanocarrier to prepare a novel antifouling agent NH 2 -ZIF-8@BITEP. The antifouling agent has uniform particle size and can effectively kill E. coli and S. aureus . After blending with epoxy resin, the resulting ZB coating effectively achieves contact sterilization, especially the ZB coating containing 20wt%NH 2 -ZIF-8@BITEP shows pronounced capability of inhibiting the formation of bacterial biofilm and the adhesion of algae even after 14 days incubation. In addition, the coating shows significantly enhanced corrosion resistance due to the hindering effect of the nanoparticles in the coating. After 7 days of salt spray testing, the ZB coating exhibits the least corrosion occurrence and no decrease in |Z| during EIS testing. The results would give insight into further understanding and potential antifouling and anti-corrosion applications of the newly synthesized antifoulant.
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高影响因子
MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Xin Zhao,Hao Guo,Rui Xue,Mingyue Wang,Qixia Guan,Tian Fan,Wenhu Yang,Wu Yang
Alteration in the concentrations of guanine (G) and adenine (A) leads to various abnormalities in the metabolic process which causes various diseases. Therefore, it still remains a challenge to establish an accurate, simple and accurate method for simultaneous detection of guanine and adenine. In this paper, using covalent organic frameworks (COFs) as a carrier and the amino functionalized reduced graphene oxide as charge transfer accelerator, layer molybdenum disulfide (MoS 2 ) nanosheets are deposited on glassy carbon electrode (GCE) by simple physical stacking to fabricate a dual-signal amplification biosensor for simultaneous detection of adenine and guanine. Under optimized conditions, the electrochemical behaviors of guanine and adenine on the COFS/NH 2 -rG/MoS 2 modified electrode were studied by cyclic voltammetry and differential pulse voltammetry. The sensor performs well in determining G and A at the same time with wide linear ranges of 0.5–150.0 μM and 1.0–280 μM and low detection limits of 0.51 μM(S/N = 3) and 0.44 μM(S/N = 3), respectively. The sensor was successfully used to assay G and A in thermally denatured herring sperm DNA, and the G/A ratio was calculated to be 0.79. The biosensor has the advantages of simplicity, speed, high sensitivity, good reproducibility, and long-term stability.
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高影响因子
CRYSTAL GROWTH & DESIGN
·
2021
·
IF 4.076
Xiaoya Weng,Chensheng Lin,Guang Peng,Huixin Fan,Xin Zhao,Kaichuang Chen,Min Luo,Ning Ye
The first tellurium(II) thiourea sulfate semiorganic nonlinear optical (NLO) material, Te(CS(NH2)2)4SO4·2H2O, was successfully obtained using the slow evaporation technique. The structure of this metal-free crystal featured three types of NLO-active units, namely CS(NH2)2, (SO4)2–, and (TeS4)6–, which synergistically contributed to its moderate second harmonic generation response (2.4 × KDP@1064 nm) and large birefringence (0.210@546.1 nm). Remarkably, this is the first example in which the quadrangular (TeS4)6– groups significantly contributed to the SHG effect and birefringence, and the first principles calculations revealed its special mechanism of NLO activity. These findings highlighted the exploration of semiorganic NLO materials and provide new opportunities for the discovery of new NLO crystals.
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高影响因子
TALANTA
·
2025
·
IF 6.1
Xueyun Wei,Baorong Zhang,Zhuomin Zhang,Gongke Li
Haloacetic acid (HAA) disinfection by-products (DBPs) with high polarity, low concentration and significant health hazard are widely present during disinfection processes, particularly iodinated and brominated acetic acids. Due to the lack of selective enrichment media, current sample preparation methods are insufficient for efficient enrichment of low concentrations of HAA DBPs in complex samples, which usually influences the analytical sensitivity and accuracy. In this study, a modulator-induced defect formation strategy was employed to prepare defective UiO-66-NH 2 (D-UiO) as a selective enrichment medium which was further fabricated as membrane solid-phase extraction (M-SPE) to efficiently enrich HAA DBPs. The structure and enrichment performance of the D-UiO medium was studied in detail. D-UiO exhibited good extraction selectivity for the five target DBPs in the presence of structural analogs as interfering compounds. Then, a sensitive quantification method by D-UiO based M-SPE was developed for trace brominated and iodinated acetic acid DBPs in tea drinks coupled with ultra-performance liquid chromatography-tandem mass spectrometry. The limits of detection of the method were in the range of 5.0-15.0 ng/L, and the recoveries were in the range of 78.3%-124%. By combining a ten-pass syringe pump with M-SPE technology, this method enabled batch sample processing and significantly reduced pre-treatment time. The method developed was efficient, selective, sensitive, and accurate for the analysis of hazardous HAA DBPs in complex tea drinks.
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PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2016
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IF 3.926
Saichai Lin,Ning Gan,Yuting Cao,Yinji Chen,Qianli Jiang
In this paper, a novel dispersive solid phase extraction (dSPE) adsorbent based on aptamer-functionalized magnetic metal-organic framework material was developed for selective enrichment of the trace polychlorinated biphenyls (PCBs) from soil sample. Firstly, we developed a simple, versatile synthetic strategy to prepare highly reproducible magnetic amino-functionalized UiO-66 (Fe 3 O 4 @PDA@UiO-66-NH 2 ) by using polydopamine (PDA) as covalent linker. Then amino-functionalized aptamers which can recognize 2,3′,5,5′-tetrachlorobiphenyl (PCB72), 2′,3′,4′,5,5′-pentachlorobiphenyl (PCB106) were covalent immobilized on UiO-66-NH 2 through coupling reagent of glutaraldehyde. Aptamer-functionalized adsorbent (Fe 3 O 4 @PDA@UiO-66-Apt) can specifically capture PCBs from complex matrix with high adsorption capacity based on the specific affinity of aptamer towards target. Moreover, the adsorbent can be easily isolated from the solution through magnetic separation after extraction. Afterwards, the detection was carried out with gas chromatography tandem mass spectrometry (GC–MS). The selective dSPE pretreatment coupled with GC–MS possessed high selectivity, good binding capacity, stability, repeatability and reproducibility for the extraction of PCBs. Furthermore, the adsorbent possessed good mechanical stability which can be applied in replicate at least for 60 extraction cycles with recovery over 80%. It provided a linear range of 0.02–400 ng mL −1 with a good correlation coefficient (R 2 = 0.9994–0.9996), and the limit of detection was found to be 0.010–0.015 ng mL −1 . The method was successfully utilized for the determination of PCBs in soil samples.
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PubMed
高影响因子
Foods
·
2025
·Vol. 14
·期 18
·3264
·
IF 5.1
Yimeng Pang,Zehao Yang,Xiaohua Liu,Xing Shen,Hongtao Lei,Xiangmei Li
Gentamicin (GEN) is a broad-spectrum antibiotic widely used in livestock production, and its excessive residues in animal-derived foods pose potential health risks to consumers. However, conventional colloidal gold immunochromatographic assays (AuNPs-ICA) often suffer from low sensitivity and poor tolerance to sample matrices. Herein, a UiO-66-NH2framework decorated with gold nanoparticle (UiO-66-NH2@Au)-based ICA was employed to construct an ICA platform for GEN detection, combining the optical advantages of AuNPs with the protective and stable octahedral framework of the Metal-organic framework (MOF) to enhance antibody stability under extreme conditions. The method achieved limits of detection for GEN of 0.1 µg/kg in four tested matrices, with recoveries of 80.1–112.0% and coefficients of variation below 11.7%. Compared to traditional AuNPs-ICA, the sensitivity was improved by up to 30-fold, the pH tolerance range was expanded from 6–8 to 4–10, and the organic solvent tolerance to organic solvents expanded up to 40%. Verification with 40 real samples demonstrated excellent correlation (R2> 0.99) with results from commercial ELISA kits. This UiO-66-NH2@Au-ICA platform offers a new technical solution with high sensitivity, strong good anti-interference performance, and robustness for rapid field detection of GEN residues in products of animal origin and holds significant practical importance for advancing rapid food safety detection technologies.
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PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 3
·037526
·
IF 3.1
Deyong Kang,Shanbao Ma,Qiaoling Zheng
Squamous cell carcinoma antigen (SCCA) is an important biomarker in the diagnose of cancer, so developing effective methods for its detection is of great significance. In the present work, a novel sandwich-like electrochemical immunosensing assay (STEM) of SCCA was constructed by preparing gold nanoparticle/reduced graphene-oxide (Au NPs/rGO) to immobilize primary antibody (PAb) of SCCA and UIO-66-NH2 MOFs structure to immobilize second antibody (SAb) and electroactive toluidine blue (Tb) probe. In this designed STEM assay, the prepared Au NPs/rGO nanohybrid offers the advantages in large surface area and conductivity as carrier, and UIO-66-NH2 provided an ideal platform to accommodate SAb and a large number of Tb molecules as signal amplifier. In the existence of SCCA, the current peaks of Tb from the formed STEM structure increase with the increase of SCCA level. After optimizing the related control factors, a wide linear range (0.01 pg ml−1 and 15.0 ng ml−1) and very low detection limit (0.003 pg ml−1) of SCCA was achieved, it's thus expected the designed STEM strategy has important applications for the detection of SCCA.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 4
·047503
·
IF 3.1
Zhengjie Zhang,Yiheng Zhang,Yangchun Li,Yurong Wang
An electrochemical sensor for the simultaneous detection of magnolol (MAG) and honokiol (HON) was constructed based on the metal-organic framework, UIO-66-NH2, and electroreduced carboxylated graphene oxide (ErGO-GOOH). The UIO-66-NH2@ErGO-COOH coating was characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and electrochemical impedance spectroscopy. Cyclic voltammetry was applied to investigate the electrochemical behavior of MAG and HON on UIO-66-NH2@ErGO-COOH/GCE. The electroanalytical method for the simultaneous determination of MAG and HON was established using linear sweep voltammetry. Under optimal experimental conditions, a linear range of 0.05 ∼ 8 μM and limits of detection of 16 and 7.0 nm for MAG and HON, respectively, were obtained. The sensor exhibited good repeatability, reproducibility, stability and anti-interference ability. The sensor was successfully applied to the simultaneous detection of MAG and HON in urine and serum samples with good recovery.
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高影响因子
RENEWABLE ENERGY
·
2024
·
IF 9
Wenli Zhang,Jifei Liu,Hongwei Gu,Cheng Pan,Yifei Long,Qunpeng Cheng,Guozhi Fan
The metal-organic framework materials ZIF-8 and UiO-66-NH 2 , synthesized by hydrothermal methods, were characterized in detail and combined to catalyze the transfer hydrogenation of 5-hydroxymethylfurfural (5-HMF) to 2,5-di(hydroxymethyl)furan (2,5-DHMF) using isopropanol as the hydrogen source. The ZIF-8/UiO-66-NH 2 catalyst mixture exhibited abundant Lewis acid-base sites and a hierarchical multiporous structure with a large specific surface area (564.0 m 2 /g). The conversion of 5-HMF reached 98.2 %, and the selectivity and yield of 2,5-DHMF were 96.2 % and 94.5 %, respectively. The recycling performance of ZIF-8/UiO-66-NH 2 was also investigated, and the conversion of 5-HMF and selectivity of 2,5-DHMF significantly decreased to 78.4 % and 79.1 % in the second run, respectively. The loss of −NH 2 groups was found to be the main reason for the decrease in activity. However, the catalytic activity of the recovered catalyst can be almost completely restored by the addition of a small amount of fresh UiO-66-NH 2 and ZIF-8, and the conversion of 5-HMF and selectivity of 2,5-DHMF were increased to 89.4 % and 95.5 %, respectively. In the proposed reaction mechanism, Lewis acid-base sites play important roles and exhibit a synergistic catalytic effect in the selective conversion of 5-HMF to 2,5-DHMF.
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高影响因子
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