SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jinshan Xie,Xiaoxiang He,Kexin Liu,Wulong Li,Zhanxiong Li
In this paper, carboxylated cotton fabric (CF-Ph-COOH) were obtained as active substrate by diazonium radical polymerization modification of cotton fibers. Then the MOF fabric composites were prepared by in situ growth of metal zirconium ions (Zr) and organic ligands on the surface of carboxylated cotton fabrics under carboxylic acid modifier. MOF fabric composites with controllable morphologies structures were achieved by regulating organic ligands, reaction time the type and dosage of regulator (formic acid and acetic acid). The prepared acetic acid regulated MOF fabric composites were designated as CF-HAc1-UiO-66, CF-HAc2-UiO-66, CF-HAc1-UiO-66-NH 2 , and CF-HAc2-UiO-66-NH 2 , respectively, and the formic acid regulated as CF-FA-UiO-66 and CF-FA-UiO-66-NH 2 . The fabricated carboxylic acid modulated MOF fabric composites were well characterized using SEM, TGA, XRD, FTIR, and XPS spectra. The adsorption experiment results show that carboxylic acid modulated Zr based MOF fabric composites can serve as adsorbent for effective removal of Cr(VI) from water, in which the CF-FA-UiO-66-NH 2 was prepared under the ratio of ZrCl 4 and BDC-NH 2 is 1.006 and with 5.47 M formic acid regulator exhibits that the optimal adsorption efficiency and the removal efficiency is 79.5 %. In addition, the adsorption of Cr(VI) in water by CFA-UiO-66-NH 2 showed a quasi-secondary kinetic model following the Langmuir adsorption model, showing a a typical of chemisorption. What’s more, the Cr(VI) removal efficiency and saturated adsorption capacity of CF-FA-UiO-66-NH 2 was up to 80 % and 318.85 mg/g, respectively. The prepared CF-FA-UiO-66-NH 2 MOF fabric composite was recyclable for removal of Cr(VI), and could be used as the potential adsorbent membrane for waste water treatment.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Junying Wu,Ruijie Guo,Houting Kang,Yanming Wang,Jingyuan Tian,Jierong Wang,Hong Yan
Metal–organic frameworks (MOFs) have great potential in improving the fire safety of polymer materials. To improve the fire resistance and smoke suppression of polypropylene (PP), a flame-retardant system ZIF-67@γ-CD-MOFs@APP incorporating multiple flame-retardant elements was designed and applied to PP. The coated PP passed UL-94 V-0 level with the LOI up to 36.2% and char residue of 12.47%. The PHRR, PSPR, COP, and CO 2 P of coated PP were reduced by 52.65%, 24.72%, 36.49%, and 52.29%, respectively, compared to neat PP. In addition, the tPHRR, tPSPR, tCOP, and tCO 2 P were prolonged by 405.3%, 345.4%, 427.8%, and 405.3% compared to pure PP, allowing more escape time when facing a real fire. Integrating the hierarchical porous structure provided by ZIF-67 and γ-CD-MOFs, catalytic carbonization of transition metal Co and the nitrogen-containing ligand, ZIF-67@γ-CD-MOFs@APP played a flame-retardant role both in the condensed and gas phase, endowing PP with enhanced flame retardancy and smoke suppression. The “all-in-one” strategy provides helpful insights for constructing fire retardant system with multi-level nanostructure.
研究领域:
材料科学
·
高分子科学
·
消防安全工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Fuhua Wei,Jie Gong,Qinhui Ren,Xiang Yu,Yan Wang,Hongliang Chen,Zhao Liang
The Zn/Zr-MOFs were synthesized via microwave-assisted ball milling and subsequently characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The thermal stability of the Zn/Zr-MOFs was evaluated through thermogravimetry (TGA). The results demonstrated the exceptional adsorption properties of the Zn/Zr-MOFs towards Lomefloxacin hydrochloride and Levofloxacin hydrochloride. At a concentration of 30 ppm for Lomefloxacin hydrochloride, the addition of 30 mg of Zn/Zr-MOFs material resulted in an adsorption capacity of 179.2 mg•g−1. Similarly, at a concentration of 40 ppm for Levofloxacin hydrochloride, the addition of 30 mg Zn/Zr-MOFs material led to an adsorption capacity of 187.1 mg•g−1. Kinetic analysis revealed that the experimental data aligned well with a pseudo-second order kinetic model. Overall, these findings highlight the significant potential application of Zn/Zr-MOF materials in wastewater treatment.
研究领域:
材料科学
·
环境工程
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 10
·期 2
·829-845
·
IF 12.732
Ting Ying,Jiafei Su,Yijing Jiang,Lingyu Ni,Xin Jiang,Qinfei Ke,He Xu
Emulsified oily wastewater from dye production chemical plants is one of the most serious components of wastewater treatment. To develop an effective strategy that can not only efficiently separate the emulsified oily wastewater but also do an effective treatment of cationic dye pollutants in water simultaneously before discharging is still a significant challenge. In this work, a kind of hierarchically micro-patterned porous nanofibrous membrane with superhydrophobic metal–organic frameworks (MOFs) incorporated (SMOFs@PT) was successfully prepared for the efficient separation of the emulsified oily wastewater and cationic dye adsorption. The results exhibited that the fabricated membranes possessed micro-patterned structures, and the elliptical pores on the fibers were evenly distributed, while there were superhydrophobic MOFs (SMOFs) embedded in the fibers. Based on the existence of SMOFs, the hydrophobicity of the as-prepared membranes was steadily improved. Not only that, during the treatment of emulsified oily wastewater, the membranes exhibited a stable and excellent separation efficiency (98% or above), and the flux was significantly improved, which was nearly 2–3 times than that of the membranes without SMOFs. Moreover, due to the electronegativity of the SMOFs and the strong capillary force caused by the highly developed pore structure as well as the high specific surface area of the fibers, the membranes can effectively adsorb the cationic organic dyes (from 20 mg L−1 to 2.5 mg L−1 or even lower in 12 h). All these attractive characteristics demonstrated that the SMOFs@PT have promising application prospects in the treatment of emulsified oily wastewater and cationic dye wastewater.
研究领域:
环境科学
·
材料科学
·
化学工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2016
·
IF 4.035
Meng Chen,Ning Gan,You Zhou,Tianhua Li,Qing Xu,Yuting Cao,Yinji Chen
An ultrasensitive electrochemical aptasensor for simultaneous detection of oxytetracycline (OTC) and kanamycin (KAN) has been developed based on metal ions doped metal organic frame materials (MOFs) as signal tracers and RecJ f exonuclease-catalyzed targets recycling amplification. The aptasensor consists of capture beads (the anti-single-stranded DNA Antibody, as anti-ssDNA Ab, labeled on Dynabeads) and nanoscale MOF (NMOF) based signal tracers (simplified as Apts-MNM, the NMOF labeled with metal ions and the aptamers). Particularly, the MOF (UiO-66-NH 2 ), with large internal surface areas, ultrahigh porosity and abundant amine groups in the pores, was employed as substrates to carry plenty of metal ions (Pb 2+ or Cd 2+ ) and label aptamers of OTC or KAN. Thus, the aptasensor is formed by the specific recognition between anti-ssDNA Ab and aptamers. In the presence of targets (OTC and KAN), aptamers prefer to form targets-Apts-MNM complexes in lieu of anti-ssDNA Ab-aptamer complexes, which results in the dissociation of Apts-MNM from capture beads. With the employment of RecJ f exonuclease, targets-Apts-MNM in supernatant was digested into mononucleotides and liberated the target, which can further participate in the next reaction cycling to produce more signal tracers. After magnetic separation, the enhanced square wave voltammetry (SWV) signals were produced from signal tracers. The aptasensor exhibited a linear correlation in the range from 0.5 pM to 50 nM, with detection limits of 0.18 pM and 0.15 pM (S/N=3) toward OTC and KAN respectively. This strategy provides specificity and sensitive approach for multiplex antibiotics detection and has promising applications in food analysis.
研究领域:
分析化学
·
环境科学
·
食品安全
·
生物传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Cuizhu Ye,Xingguang Chen,Dong Zhang,Junjun Xu,Huiting Xi,Tiantian Wu,Danwen Deng,Chunhong Xiong,Jinsheng Zhang,Ganhui Huang
Coated with polypyrrole (Ppy)-based molecularly imprinted polymer (MIP), 3D CoFe-metal organic frameworks (CoFe-MOFs) with gold nanoparticles (AuNPs) was developed for electrochemical trace detection of norfloxacin (NOR). On one hand, the trace detection of NOR was realized with MIP/CoFe-MOFs/AuNPs/Glassy carbon electrode (GCE). The effective surface area of the imprinted cavities capable of identifying NOR on MIP/CoFe-MOFs/AuNPs/GCE increased to 0.1058 cm 2 after 3D CoFe-MOFs/AuNPs was modified, which indicates that CoFe-MOFs/AuNPs could generate more imprinted cavities, thus contributing to a lower limit of detection (LOD) of 0.131 pmol L −1 (S/N = 3) with a wider linear range (5–100, 100–1000 and 1000–6000 pmol L −1 ). On the other hand, the recognition reaction to NOR by MIP/CoFe-MOFs/AuNPs/GCE is an irreversible electrochemical oxidation reaction involving an electron and a proton, controlled by a mixed adsorption-diffusion mechanism. Rapid and precise detection of NOR in prescription (norfloxacin capsules with the specification of 0.1 g) and pure milk with the recovery rates between 97.04 and 110.2% and the relative standard deviations (RSD) were less than 5.7%. The measured results by MIP/CoFe-MOFs/AuNPs/GCE were close to the commercial norfloxacin enzyme-linked immunosorbent assay (ELISA) kit, demonstrates its high potential to NOR trace detection in environmental and animal foods.
研究领域:
分析化学
·
电化学
·
材料科学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yi Shao,Hao Suo,Shuting Wang,Yaou Peng,Xiaoying Chu,Ziyue Long,Kanghui Du,Lili Su,Xinyue Sun,Xinyi Wang,Qingying Wang,Renlong Li,Bailiang Wang
Eye trauma, ophthalmic surgery and contact lens (CL) wearing cause corneal infection and bacterial biofilms formation, which further lead to corneal ulcer and perforation. In view of the low bioavailability of antibiotic eye drops and the clinical problems that cause bacterial resistance, we used pH sensitive zeolitic imidazolate framework-8 metal–organic frameworks (ZIF-8 MOFs) to load broad-spectrum antibacterial drugs levofloxacin (LEVO). After the surface modification by hyaluronic acid (HA), the nanomaterial surface was negatively charged. A simple amination treatment was used to endow CL surface with amino groups to combine the negatively charged nano drug loading system through electrostatic forces. The bacteriostatic ring of ZIF-8@LEVO@HA-PEI modified CL (ZLHP-CL) was 34 mm, which could be owing to the high drug loading capacity of ZIF-8 (0.65 mg/cm 2 ). The bactericidal function was further confirmed by shake flask method and live/dead bacterial staining assay against S. aureus , S. epidermidis and E. coli . It is worth mentioning that ZLHP-CL showed significant pH sensitivity to the bacterial infection, which released drug rapidly at pH 5.5 and hardly released drug at pH 7.4. In the bacterial biofilm’s formation experiment, it was found that ZLHP-CL obviously inhibited bacterial adhesion and biofilms formation. Furthermore, it was proved in infectious keratitis animal that ZLHP-CL could kill the bacteria and reduce the inflammation reaction, which showed advantages in corneal tissue repair and light transmittance maintenance. In this work, based on nanotechnology, a facile CL drug loading technology is developed, which can be used to sustained release of various drugs for ophthalmic diseases treatment.
研究领域:
纳米技术
·
药学
·
眼科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Chuan Fan,Lirong Wang,Yong Luo,Yongchao Song,Tailin Xu,Xueji Zhang
Metal–organic frameworks (MOFs) have recently been widely used in antimicrobial fields due to their adjustable composition and morphology. The inherent properties of MOFs (e.g., their shape, size, and metal element) are highly related to their antibacterial performance. The traditional beaker-based synthesis system to evaluate antibacterial properties of MOFs often leads to high reagent costs and environmental pollution. Here, a low-cost droplet-based microscale synthesis platform for better and economical screening of antimicrobial performance of MOFs is demonstrated. Multiple MOFs (Zn-, Co-, and Cu-MOFs) with controlled morphologies are successfully one-click fabricated through such a droplet-based synthesis platform. Further antimicrobial performance screening (Staphylococcus aureus and Escherichia coli) of the above MOFs indicates that the Co-MOFs show better antibacterial effects than Zn-MOFs and Cu-MOFs. Such integration of droplet array synthesis and screening can greatly reduce the cost and time, especially for parallel experiments, and provide great potential in guiding the large-scale synthesis of high-performance materials.
研究领域:
材料科学
·
化学
·
生物技术
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2016
·
IF 13.038
Hai-Qun Xu,Kecheng Wang,Meili Ding,Dawei Feng,Hai-Long Jiang,Hong-Cai Zhou
The synthesis of phase-pure metal–organic frameworks (MOFs) is of prime importance but remains a significant challenge because of the flexible and diversified coordination modes between metal ions and organic linkers. In this work, we report the synthesis of phase-pure MOFs via a facile seed-mediated approach. For several “accompanying” pairs of Zr–porphyrinic MOFs that are prone to yield mixtures, by fixing all reaction parameters except introducing seed crystals, MOFs in phase-pure forms have been obtained because the stage of MOF nucleation, which generates mixed nuclei, is bypassed. In addition, phase-pure MOF isomers with distinct pore structures have also been prepared through such an approach, revealing its versatility. To the best of our knowledge, this is an initial report on seed-assisted synthesis of phase-pure MOFs.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Tayyaba Iftikhar,Tahir Imran,Jinhua He,Chuangjie Zhang,Yuanting Xie,Haitao Ye,Lei Su
Conventional UA detection relies on invasive blood or urine tests, limiting convenience and real-time monitoring. In this study, we have designed a novel microneedle array-based wearable electrochemical sensor to detect UA in skin interstitial fluid (ISF), which consists of a bi-metal-organic framework (bi-MOF) modified screen-printed electrode (SPE) and 3D-printed hollow microneedle array patch (HMNsAP). To this end, a “MOFs on MOFs” strategy was applied by combining HKUST-1 and Eu-MOF nanocomposites on an SPE, enhancing electrode surface area, electrode material porosity, and electron transfer efficiency. The HMNsAP was equipped with a microvalve and connected to a vacuum tube to facilitate efficient ISF extraction while preventing backflow to mitigate biosafety risk. The sensor showed outstanding analytical performance, with a low limit of detection of 20 nM and high recovery rates ranging from 98.6% to 100.4% across various UA concentrations in ex-vivo rat skin tests, along with strong selectivity and reproducibility, indicated by a relative standard deviation (RSD = 1.68%). These findings underscore the synergistic advantages of combining advanced MOF materials with an innovative microneedle system for precise UA monitoring in ISF, enhancing its role in personalized diagnostics and beyond.
研究领域:
生物传感器
·
可穿戴电子设备
·
电化学
·
即时检测
·
纳米材料
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Bioactive Materials
·
2023
·
IF 18.9
Jianqiu Yang,Zhenzhen Huang,Jiang Tan,Jingye Pan,Shixuan Chen,Wenbing Wan
Bacterial infection and scar formation remain primary challenges in wound healing. To address these issues, we developed a decellularized pomelo peel (DPP) functionalized with an adhesive PVA-TSPBA hydrogel and antibacterial gallic acid/copper MOFs. The hybrid wound dressing demonstrates favorable biocompatibility. It does not impede the proliferation of fibroblasts or immune cells and can stimulate fibroblast migration, endothelial angiogenesis, and M2 macrophage polarization. Additionally, the dressing can scavenge reactive oxygen species (ROS) and provide antioxidant effects. Furthermore, DPP + MOF@Gel effectively inhibits the viability of S. aureus and E. coli in vitro and in vivo. The histological observations revealed enhanced granulation tissue formation, re-epithelialization, and angiogenesis in the DPP + MOF@Gel group compared to other groups. The local immune response also shifted from a pro-inflammatory to a pro-regenerative status with DPP + MOF@Gel treatment. The skin incision stitching experiment further exhibits DPP + MOF@Gel could reduce scar formation during wound healing. Taken together, the hybrid DPP + MOF@Gel holds great promise for treating bacteria-infected skin wounds and inhibiting scar formation during wound healing.
研究领域:
材料科学
·
生物医学工程
·
伤口愈合
·
生物材料
·
抗菌剂
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2022
·Vol. 18
·期 34
·2203964
·
IF 15.153
Peng Zhou,Mingyu Zhang,Liping Wang,Qizhong Huang,Zhean Su,Ping Xu,Renhao Zou,Xiaodong Wang,Cen Zeng,Kaixun Ba
The slow kinetics and poor structural stability prevent transition metal selenides from being widely used in sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). Herein, the “flower-like” porous carbon anchored by Zn-Mn binary selenides (ZMS@FC) composites are fabricated by selenizing the modified hierarchically metal-organic frameworks. The 2D conductive hierarchically flakes’ abundant pore structure and multiple active sites shorten the ion diffusion length and promote conductivity, while the synergistic effect of the binary metals and intrinsic large pseudocapacitive contribution effectively improve capacity and rate performance. ZMS@FC composites exhibit impressive rate capability of 294.4 mA h g –1 at 10 A g –1 and excellent cyclic stability with 369.6 mA h g –1 specific capacity retention at 2 A g –1 after 1000 cycling in SIBs. It is noted that 156.9 mA h g –1 can be retained at 5 A g –1 and 227.0 mA h g –1 is remained after 500 cycles at 2 A g –1 in PIBs. The ex situ X-ray diffraction patterns and transmission electron microscopy pictures are used to confirm the conversion reaction processes of the Zn-Mn-Se. Designing high-performance energy storage materials may benefit greatly from the universal synthesis technology of bimetallic sulfide anodes for enhanced SIBs and PIBs.
研究领域:
材料科学
·
能量存储
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）