MATERIALS CHEMISTRY AND PHYSICS
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2023
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IF 4.6
Lin Yang,Tingjiao Liu,Zheng Li,Changqing Liu,Feifeng Wang,Chunshan Wu
The application of metal organic frameworks (MOFs) for the recovery of low concentrations of rare-earth elements (REEs) has attracted increasing attention due to the precious value of REEs resources. In this study, UiO-66-COOH was modified by trifluoroacetic acid (TFA) to not only promote material crystallization and the pore structure verified by XRD and SEM characterization, but successfully enhance its adsorption capacity and achieve perfect selectivity for Lanthanum ion (La 3+ ). The adsorption capacity for UiO-66-COOH-24TFA was increased by 58% compared to unmodified material. The adsorption mechanism and application were comprehensively investigated. By adsorption kinetics , isotherm and thermodynamic studies, it was found that the adsorption process mainly exhibited monolayer adsorption with spontaneous endothermic-chemisorption characteristics, and –COOH of the modified materials (UiO-66-COOH-24TFA) played an important role, which was confirmed by XPS. Moreover, UiO-66-COOH-24TFA was applied to REEs actual wastewater by successive six-stage adsorption process , where the overall recovery rate on La 3+ reached 94.1% under the coexisting conditions of multiple ions. The application of this acid modified material in the field of the separation and recovery of REEs is of great promise.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Shenghui Ning,Fuchao Yang,Guangyi Tian,Dongyin Li,Zhiguang Guo
As the pollution of oily wastewater becomes more and more serious, it has a great negative impact on the ecosystem and human health. How to achieve efficient oil-water separation has become a common ecological problem all over the world. Therefore, it is extremely significant to develop innovative and efficient oil-water separation membranes. Past studies have shown that the metal-organic framework material UiO-66 (Zr), which has free carboxyl groups, is not only hydrophilic but also has good stability. Inspired by this, an ingenious method for a polydopamine (PDA) and metal-organic skeleton UiO-66(Zr) coating anchoring on cotton fabric surface was proposed, and the final product was denoted as CF-PDA@CS@UiO-66-COOH fabrics. Particularly noteworthy is that the separation efficiency of CF-PDA@CS@UiO-66-COOH for various organics exceeded 99.83 %, the water flux was achieved to 100744.5 L/(m 2 ·h). After 20 cycles, the separation efficiency exceeded 99.81 % and the water flux always surpassed 75067.9 L/(m 2 ·h). In addition, the prepared membranes were able to maintain excellent underwater superoleophobic properties even under acidic or alkaline environmental conditions or after 50 sandpaper abrasion cycles. And it also has excellent self-cleaning and anti-fouling. These excellent properties are due to the strong anchoring between CF, PDA, CS and UiO-66-COOH. This facile and scalable functional fabric could be applied to a wide range of oil-water separation and facilitate the development of high flux separation devices.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
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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
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肾病治疗
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2025
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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
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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
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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
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2019
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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
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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
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jinlong Li,Zihuan Zhao,Qihang Wei,Hongman Hou,Gongliang Zhang,Jingran Bi
This study integrates UiO-66-COOH metal–organic frameworks (MOFs) with pectin (Pec) to precisely release potassium cinnamate (PC) to develop a pectinase-responsive active fruit-preservation system (UiO-66-COOH@PC/Pec). Carboxylated UiO-66 with nanoporosity was fabricated to achieve a high loading amount of PC (235 mg·g −1 ) via the synergistic effects of hydrogen bonding, as shown by the loading kinetics and reduced density gradient analyses. A gatekeeper was established by grafting Pec onto the surface of the MOF (UiO-66-COOH@PC/Pec), thereby “locking” PC to prevent leakage. Moreover, an enzyme-responsive controlled-release behavior was developed under pectinase stimulation, achieving up to 95 % PC release within 9 h through Fickian diffusion and only 25.3 % in enzyme-free conditions by non-Fickian diffusion and matrix erosion. With significant long-term inhibiting activity against both bacteria and fungi, UiO-66-COOH@PC/Pec successfully extended the shelf life of strawberries from 2 to 5 days at 25 °C. Moreover, UiO-66-COOH@PC/Pec exhibited good water solubility and negligible toxicity, indicating that it can be easily removed from fruit surfaces and offers high consumer acceptance. These results provide a novel MOF-based controlled-release strategy for smart food-packaging applications.
研究领域:
食品科学与技术
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材料科学
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智能包装
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可控释放系统
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采后生物学与技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Chengyu Sun,Yihao Ji,Wenyan Huang,Fuli Deng,Yi Zhang
The recovery of rare earth elements from mineral wastes is extremely critical for the soaring global demand due to their unique roles and resource scarcity. In this work, the defective phosphoric acid functionalized UiO-66-COOH (UiO-66-COOH-OP-ST2) was prepared via the successive phosphoric acid functionalization and defect modulation procedures towards UiO-66-COOH. The adsorption results disclosed that maximal adsorption capacities of UiO-66-COOH-OP-ST2 and phosphoric acid functionalized UiO-66-COOH (UiO-66-COOH-OP) were found to be 132.76 and 83.11 mg/g at pH = 6, respectively. Adsorption kinetics curves and isotherms revealed that the adsorption process was consistent with pseudo second order kinetic model and Langmuir isothermal model. Furthermore, UiO-66-COOH-OP-ST2 can maintain 91.74 % of initial adsorption capacity after five consecutive adsorption–desorption cycles, and exhibit no significant changes in the XRD patterns, demonstrating an excellent recycling stability. In addition, the adsorption mechanism elucidated that the elevated adsorption performance was mainly attributed to the electrostatic attraction and complex interaction between the O sites and Yb(III) based on EDS and XPS analysis. This work efficiently improved adsorption performance of metal organic frameworks after simultaneously grafting functional groups and creating defective sites without affecting their stabilities.
研究领域:
环境化学
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材料科学
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无机化学
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吸附分离
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稀土元素回收
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产品关联
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
DESALINATION
·
2025
·
IF 9.8
Kim-Sinh Nguyen-Thi,Eunmok Yang,Anh-Dao Le-Thi,Chang-Min Kim,Changwoo Kim,In S. Kim
As climate change exacerbates the global water crisis, desalination is becoming vital for acquiring clean water from plentiful brackish and seawater sources. Notably, interlayer thin-film nanocomposite membranes used in reverse osmosis and nanofiltration stand out as key innovations. These advanced membranes are drawing interest due to their remarkable performance, attributed mainly to their capability to create thinner selective layers in thin-film composite structures. This study introduces a novel methodology combining UiO-66-(COOH) 2 with tannic acid complexes as an interlayer to enhance filtration performance for reverse osmosis application. Various characterization methods were employed to validate this innovative approach. The techniques confirmed both the unique morphology of the membrane and the impact of tannic acid UiO-66-(COOH) 2 complexes on the polyamide membrane. Additionally, filtration tests showed notable enhancements in membrane performance, with salt permeance dropping from 0.47 LMH for the control membranes to an impressive 0.28 LMH for the membrane with tannic acid UiO-66-(COOH) 2 complexes. Permeance also increased substantially from 1.08 to 1.65 LMH/bar. A five-day stability test conducted under high-pressure conditions highlighted the durability and excellent properties of the membranes. This research showcases a promising and inventive strategy for improving the efficacy of desalination membranes, which has the potential to transform water purification technologies.
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产品关联
DOI
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
危险品化学品经营许可证（带存储）