JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shuaiyang Jiang,Ya Liu,Yulu Liu,Dongfang Wang,Xiaofeng Wang,Qian Li
A portable home hemodialysis device is a miniaturized and easy-to-operate medical apparatus designed for patients with chronic kidney disease, enabling them to conveniently perform hemodialysis at home or while traveling. However, it imposes high requirements on the dialysis membrane in terms of dialysis efficiency, adsorption capacity, and blood compatibility. In this study, the composite membrane was fabricated through electrospinning, which is an in situ synthesis of carbon nano tube (CNT) bridged UiO 66 (COOH) 2 on PTFE fibers. UiO 66 (COOH) 2 increased the adsorption site by association with CNT, and achieved the adsorption of creatinine by hydrogen bond and π bond, which greatly reduced the usage of dialysis solution. UiO 66 (COOH) 2 and CNT were first combined for creatinine adsorption, and its maximum static adsorption capacity was 66 mg/g. During the dialysis, the yielding membrane showed a creatinine clearance of 64.89% and a resistance protein rate of more than 98%. Compared with pure PTFE dialysis membrane, the amount of dialysate used to achieve the same dialysis effect was merely 1/10. Furthermore, the membrane has a hemolysis rate of 2% and a low platelet adhesion rate, which shows excellent blood compatibility. Therefore, the dialysis membrane prepared in this study is expected to promote the development of portable home hemodialysis devices.
研究领域:
材料科学
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医学工程
·
肾病治疗
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Zifei Wu,Hao Ding,Kailai Xu,Chenghui Li,Xiandeng Hou
Background due to the toxicity and widespread distribution of inorganic mercury ions (Hg 2+ ), it is a crucial task for researchers to develop simple methods for field analysis of water samples for trace Hg 2+ . Result a colorimetric and ratiometric fluorescent dual-mode assay based on bifunctional UiO–(COOH) 2 –NH 2 /Eu and gold nanocomplexes (AuNPs@UiO–(COOH) 2 –NH 2 /Eu) was constructed for the sensitive, selective and potentially on-site determination of Hg 2+ . The incorporation of Hg 2+ resulted in the formation of gold amalgam, which enhanced peroxidase-like activity of AuNPs@UiO–(COOH) 2 –NH 2 /Eu, accelerating the oxidization of zymolyte 3,3′,5,5′-tetramethylbenzidine (TMB). Concurrently, the color of the reaction solution turned blue, and the RGB (red, green, and blue) of the solution color changed accordingly. The fluorescence at 618 nm was almost unchanged with the increase of Hg 2+ concentration, whereas the fluorescence at 460 nm was obviously quenched due to the inner filter effect (IFE). Under UV irradiation, the fluorescence emission of the sensing system changed from blue to red, enabling easy visual detection. The probe showed great linearity over a wide range of 20–1200 nM (colorimetric) and 50–4000 nM (fluorescent), with limits of detection (LODs) of 8 nM and 3 nM, respectively. Significance the proposed method was successfully applied to the determination of trace Hg 2+ in tap water and groundwater, while the use of a smartphone enables its simplicity and portability. The results show that the colorimetric and ratiometric fluorescent dual-mode method based on AuNPs@UiO–(COOH) 2 –NH 2 /Eu can achieve rapid visual determination of Hg 2+ potentially useful for on-site analysis.
研究领域:
分析化学
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环境科学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2023
·Vol. 98
·期 5
·1222-1237
·
IF 3.4
Minjuan Chen,Jianxian Zeng,Zhenwei Wu,Rui Zhang,Zhengqiu Yuan,Xiaoping Huang,Kai Jin,Shengkai Yang,Yahong Li
BACKGROUND Developing new materials for separating Sr 2+ ions from aqueous solutions is significant. Metal–organic frameworks are regarded as excellent adsorption materials due to their high specific surface area and abundant adsorption sites. In this work, a novel UiO-66-(COOH) 2 -based mixed matrix membrane (MMM) was prepared by combining UiO-66-(COOH) 2 with polyethersulfone (PES) for separating Sr 2+ . RESULTS The MMMs were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy and water contact angle and water flux measurements. Various contents (0–2.5 wt%) of UiO-66-(COOH) 2 were blended into PES membranes. The results showed that incorporating UiO-66-(COOH) 2 significantly increased membrane porosity and water flux, and reduced contact angle. The membrane (M4) that contained 2.0 wt% UiO-66-(COOH) 2 exhibited an excellent morphology and the highest Sr 2+ uptake capacity (111.9 μg cm −2 ). Adsorption kinetics and isotherms showed that the nature of the adsorption of the membrane towards Sr 2+ was chemisorption, homogeneous and monolayer. Compared with the adsorption capacity of UiO-66-(COOH) 2 towards Sr 2+ in adsorption packed column, these values of M4 decreased by about 75% during membrane filtration. The rejection performance of MMMs increased with increasing UiO-66-(COOH) 2 content. Breakthrough curves of MMMs were not correlated with flow rate in the range of 10–180 mL h −1 . The presence of Ca 2+ and Mg 2+ ions did not obviously affect the separation of Sr 2+ , but Pb 2+ had a significant influence. Furthermore, after five adsorption–desorption experiments, the regeneration remained at about 95% of initial values. CONCLUSIONS The MMMs showed good adsorption capacity for Sr 2+ and exhibited favorable reusability and stability. © 2023 Society of Chemical Industry (SCI).
研究领域:
材料科学
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环境工程
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Feihu Mu,Qiong Cai,Hao Hu,Jian Wang,Yun Wang,Shijian Zhou,Yan Kong
To solve the problem of energy shortage and environmental pollution, the construction of properly designed photocatalysts is a promising method. Here, UiO-66-(COOH) 2 /ZnIn 2 S 4 Z-scheme photocatalyst decorated with MoS 2 nanosheets was designed and constructed as a novel 3D hierarchical structure via hydrothermal methods. In this particular 3D hierarchical structure, the UiO-66-(COOH) 2 nanoparticles are decorated in the interweaving petal nanosheets of ZnIn 2 S 4 microspheres, while the co-catalyst of MoS 2 is folded at the edge of these interweaving petals. The excellent heterojunctions with highly exposed catalytic active sites are correspondingly built, and the close interfacial interaction between UiO-66-(COOH) 2 , MoS 2 and ZnIn 2 S 4 create a stage for fast transfer of photogenerated electrons, which are both effective for the photocatalytic reaction process. Also, the Z-scheme charge-transfer process improves the oxidizability and reducibility between UiO-66-(COOH) 2 and ZnIn 2 S 4 . As a result, the optimized UiO-66-(COOH) 2 /MoS 2 /ZnIn 2 S 4 photocatalyst exhibits excellent photocatalytic hydrogen production (18.794 mmol h −1 g −1 ) and reduction of Cr(VI) (0.06850 min −1 ) under simulated solar light irradiation, which are 15.3 and 6.7 times higher than that of bare ZnIn 2 S 4 , respectively, and also the prominent stability and excellent recyclability are obtained. This study provides new insights into the research on the Z-scheme system containing MOF components for growing energy and environmental demands.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
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IF 7.635
Shuangjiang He,Yingqing Zhan,Jiaxin Hu,Guiyuan Zhang,Shumei Zhao,Qingying Feng,Wei Yang
Multi-component pollutant-oil-water emulsion from the fast-growing industry seriously threatens the human health and ecological environment, which poses a huge challenge to membrane technology. Recently, 2D MXene materials have shown promising and potential candidates for functional separation membranes . Herein, for the first time, a multitasking hierarchical MXene@UIO-66-(COOH) 2 composite membrane supported on nylon 66 microporous substrate was designed via a facial strategy, which possessed high chemical stability and efficient multi-component pollutant-oil-water emulsion separation performance. The promising synergistic separation performance of various oil-in-water emulsions and dye, high antifouling resistance, and excellent recyclability of MXene@UIO-66-(COOH) 2 composite membrane originated from the inherent hydrophilicity , low oil adhesion feature, and hierarchical intercalation structure of membrane. Furthermore, the chemically stable MXene@UIO-66-(COOH) 2 composite membrane exhibited outstanding corrosion resistance under strong acid (3 M HCl), alkali (1 M NaOH) and salty (Saturated NaCl) solutions. Therefore, this work provides a powerful platform for designing stable and functional 2D membrane materials for multi-component pollutant-oil-water emulsion separation in harsh chemical environments.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2024
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IF 10.7
Yuan Gao,Peng He,Jingwen Yang,Bo Liu,Qiong Zhang,Qi Zhou,Hanlu Xu,Rongli Jiang,Zhongran Dai,Shaorong Wang
We focus on optimizing acid-base interactions and hydrogen bonding networks to achieve enhanced proton conductivity under low relative humidity (RH) and high temperature. By functionalizing UiO-66-(COOH) 2 with glutamic acid (Glu) and lysine (Lys), we generate Glu-UiO-66-(COOH) 2 and Lys-UiO-66-(COOH) 2 . These modified materials are subsequently incorporated into chitosan (CS) to produce the composites Glu-UiO-66-(COOH) 2 @CS and Lys-UiO-66-(COOH) 2 @CS. The successful incorporation of amino acids and cross-linking between -COOH and -NH 2 groups in the composites, confirmed by FTIR and PXRD analyses, significantly enhances the structural integrity and durability by strengthening the network, and reducing polymer chain mobility. Proton conductivity assessments reveal that Lys-UiO-66-(COOH) 2 @CS-7 exhibits a remarkable conductivity of 0.022 S/cm at 100 % RH and 363 K, outperforming Glu-UiO-66-(COOH) 2 @CS-7. The lower activation energy ( E a ) of 0.28 eV for Lys-UiO-66-(COOH) 2 @CS-7, compared to 0.336 eV for Glu-UiO-66-(COOH) 2 @CS-7, highlights the significant improvement in intramolecular acid-base interactions and hydrogen bonding. Furthermore, Lys-UiO-66-(COOH) 2 @CS-7 maintains notable proton conductivity at 43 % RH, with an E a of 0.216 eV, demonstrating its efficacy in low-humidity conditions. These findings underscore the profound impact of amino acid modifications and cross-linking on proton conductivity by reinforcing acid-base interactions, hydrogen bonding networks, and proton transfer efficiency.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Zhiyuan Huang,Ye Yuan,Weifan Wang,Hao Zheng,Zhi Wang
Mixed matrix membranes (MMMs) have demonstrated remarkable advantages in gas separation applications through the synergistic integration of polymeric matrices and nanostructured reinforcements. While these advanced composite thin-film materials exhibit substantial potential for CO 2 separation, their industrial-scale implementation confronts threefold challenges: elevated manufacturing costs, interfacial compatibility optimization between nanofillers and polymer matrices, and performance enhancement requirements for achieving superior separation efficiency. In this study, the green and economical nanofiller UIO-66-(COOH) 2 (denoted as UC) was strategically selected. A novel strategy involving synergistic modification using Zn 2+ and polyvinylamine (PVAm) was developed to address the critical challenge of severe particle agglomeration and sedimentation. This phenomenon, caused by intense electrostatic interactions between the strongly negatively charged UC and the cationic polymer PVAm during surface modification, was effectively mitigated through the proposed cooperative modification mechanism, resulting in the successful synthesis of P@UC-Zn exhibiting exceptional dispersibility and enhanced compatibility with the polymeric matrix. The fabricated P@UC-Zn-PVAm/mPSf MMMs containing 35 wt% filler exhibited remarkable CO 2 permeance (3250 GPU) and selectivity (166) under feed gas conditions (CO 2 /N 2 = 15/85 vol%, feed pressure: 2 bar). Furthermore, the optimized MMMs demonstrated robust operational stability in simulated flue gas tests and showed potential for applications in carbon dioxide-methane and carbon dioxide-hydrogen separations.
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Xiaoya Zhao,Jilin Zhang,Zi Dai,Yunyun Lei,Xiaoxun Liu,Guixia Liu
Excess fluoride in drinking water from groundwater can cause dental and skeletal fluorosis affecting millions of people worldwide. Adsorption is an appealing strategy for defluoridation due to its simple operation and environmental friendliness. However, conventional adsorbents exhibit low adsorption capacity because few exposed active sites. In this work, La anchored Zr-based metal-organic framework (La-UiO-66-(COOH) 2 ) adsorbent with dual-metal sites was designed and synthesized to remove fluoride effectively. The doping of La(III) using uncoordinated carboxyl group of UiO-66-(COOH) 2 increased the adsorption capacity. The morphology, composition, structure, surface area, and thermal stability of adsorbent were carefully characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectrometer (EDX), fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) techniques. The adsorbent is a polyhedral shape with aggregated and smaller crystalline particles and La is uniformly distributed over the adsorbent, favoring the effective adsorption of fluoride. La-UiO-66-(COOH) 2 showed excellent adsorption performance in a wide pH range of 3–9, and the maximum adsorption capacity was 57.23 mg g −1 . The fluoride removal rate of as-prepared adsorbent reached as high as 87 % within 5 min. The adsorption process conformed to the pseudo-second-order equation model and the Freundlich isotherm model. Thermodynamic research indicated that the adsorption process was spontaneous and endothermic. After four adsorption-desorption cycles, the fluoride removal rate of the adsorbent was still retained at 79.7%. The design of dual-metal site adsorbents provides a potential strategy for highly efficient removal of fluoride.
研究领域:
环境科学
·
材料科学
·
水处理
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DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 21
·2879
·
IF 4.9
Guifang Yang,Qiu Wu,Gao Xiao,Xiaoxia Ye
Membrane separation is a promising technology for emulsified wastewater treatment. However, conventional membrane often suffer from limitations such as low mechanical strength, the inherent “trade-off” effect between flux and separation efficiency, and poor antifouling properties. To address these challenges, we report a novel composite membrane (CFM-UiO-66-(COOH)2) fabricated by in situ growth of functionalized UiO-66-(COOH)2on a mechanically robust collagen fiber membrane (CFM) substrate. The resulting composite leverages the inherent properties of the CFM, along with the controlled generation of charge-neutralization demulsification sites and size-sieving filtration layers from the UiO-66-(COOH)2. This CFM-UiO-66-(COOH)2exhibited superwetting behavior and achieved efficient separation of cationic surfactant-stabilized oil-in-water micro- and nano-emulsions. Specifically, the CFM-UiO-66-(COOH)2achieved separation efficiencies exceeding 99.85% for various cationic O/W emulsions, with permeation fluxes ranging from 178.9 to 225.9 L·m−2·h−1. The membrane also demonstrated robust antifouling properties, excellent acid/alkali resistance, high abrasion durability, and good biocompatibility. Importantly, stable performance was maintained over six consecutive separation cycles. These characteristics, combined with the electrostatic interactions between carboxyl groups on the UiO-66-(COOH)2and cationic contaminants, suggest that CFM-UiO-66-(COOH)2holds significant potential for practical and sustainable wastewater treatment applications.
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DOI
PubMed
高影响因子
Analytical Methods
·
2023
·
IF 3.1
Tingxia Li,Zhongxiu Chen,Zhongshuai Zhao,Zhongde Liu
Tetracycline antibiotics (TCs) are commonly used antibiotics in the treatment of infections, but their overuse has a negative impact on human health and ecosystems. Thus, the development of a facile and on-site visualization method for TCs detection is necessary. Here, we propose the potential of using the lanthanide-functionalized metal-organic frameworks (MOFs) composites (Ag+/Tb3+@UiO-66-(COOH)2, ATUC) as a probe for the rapid detection of tetracycline (TC), chlortetracycline (CTC), oxytetracycline (OTC), and doxycycline (DOX) residues, in which the UiO-66-(COOH)2 (UC) could be utilized to provide an interaction microenvironment, Tb3+ as recognition units and Ag+ as fluorescence enhancer. Upon exposure to TCs, significant luminescence quenching of ATUC excited at 255 nm was observed due to the inner filter effect (IFE) and photo-induced electron transfer (PET), and the established strategy has a detection limit (LOD) of 11.0, 20.1, 9.1, and 22.5 nM for TC, CTC, OTC, and DOX, respectively. More importantly, given its portability and conspicuous luminescence color gradation variation, a portable test strip based on ATUC was manufactured and the results could be distinguished immediately by naked eyes and smartphone analysis, allowing for on-site rapid quantitative assay of TCs, not only in the laboratory but also in a point-of-care setting.
研究领域:
分析化学
·
环境科学
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材料科学
·
生物技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 4
·2909-2923
·
IF 4.682
Zeng Sen,Hou Yaqi,Zhou Yaming,Zhou Xi,Ye Shefang,Wang Miao,Ren Lei
Protein-bound uremic toxins (PBUTs) are difficult to remove through dialytic procedures, and the accumulation of PBUTs is always associated with adverse symptoms in end-stage kidney disease. Hemoperfusions and novel membranes have been developed for the removal of PBUTs, but still suffer from low efficiency. Herein, we investigated the adsorption performance of three zirconium metal–organic frameworks (Zr-MOFs: UiO-66, UiO-66-SO 3 H, and UiO-66-(COOH) 2 ) for two typical PBUTs (indoxyl sulfate, IS; hippuric acid, HA). We found that Zr-MOFs could adsorb PBUTs efficiently with a capacity of as high as 49.5 mg g −1 for IS and 38.3 mg g −1 for HA, respectively, due to the van der Waals interactions, Coulomb interactions, and π – π interactions. Density functional theory simulations demonstrated that H-bonding on basis of the –SO 3 H and –COOH groups could endow MOFs with better absorptivity. Further, to expand to practical hemodialysis applications, we incorporated Zr-MOFs into a polylactide (PLA) matrix to fabricate MOFs-based mixed matrix membranes (MMMs). The MMMs showed excellent in vitro biocompatibility and high water flux up to 260 L m −2 h −1 . Under static conditions, the MMMs could remove HA and IS with a percentage of 75 and 78% in 4 h, respectively, whereas PLA membrane removed 12% of HA and 13% of IS. Under dynamic conditions, MMMs could remove 57% of IS and 54% of HA in 30 min; by contrast, PLA membrane only removed 2.9% of IS and 2.2% of HA. These MOFs-based MMMs with exceptional absorptivity, high water flux, and good biocompatibility might show great prospects in the foreground for the application of safe and efficient blood purification.
研究领域:
材料科学
·
生物医学工程
·
肾病学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）