SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Lin Chen,Ruichao Zhu,Han Gao,Jin Wu,Zhiwei Yin,Chuqing Cao
The recycling of lithium-ion batteries (LIBs) presents significant challenges due to the absence of robust acid-resistant membranes capable of selective ion separation under harsh acidic conditions, commonly encountered in hydrometallurgical processes. This study developed a novel PSA-BTSC (polysulfonamide with 1,3,5-benzenetrisulfonyl chloride) composite membrane integrated with UiO-66-NH 2 nanoparticles, aiming to enhance both acid resistance and ion separation performance. Experimental results demonstrated that the PSA-BTSC membrane achieved a Li+/Co 2+ separation factor of 28.02 and retained 85.8 % permeability for Li + while maintaining 91.1 % rejection for Co 2+ after 30 days of immersion in 1 M HCl, showcasing superior acid resistance compared to conventional PA-TMC (polyamide with 1,3,5-benzenetricarbonyl trichloride) membranes, whose Co 2+ rejection dropped drastically to 19.4 %. Surface charge analysis and pore size distribution indicated that PA-TMC membranes suffered partial hydrolysis and pore enlargement, resulting in a reduction of separation efficiency. In contrast, the sulfonyl groups in PSA-BTSC membranes conferred enhanced stability against acid-induced degradation. Additionally, density functional theory (DFT) simulations highlighted the higher activation energy barrier (2.63 eV) for sulfonamide bond hydrolysis compared to amide bonds (1.57 eV), emphasizing the superior stability of the PSA structure. These findings highlighted the superior stability and acid resistance of PSA-BTSC membranes, positioning them as promising materials for applications requiring high stability in acidic environments, such as the processing of lithium battery leachates.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Xiaocan Zhang,Jiashu Long,Mengxin Wang,Yiran Liu,Huixiao Ma
Blending metal-organic frameworks to optimize proton transport pathways is one of the strategies to improve the proton conductivity of proton exchange membranes (PEM). In this paper, amino-sulfonic acid bifunctionalized UiO-66 (NUS) by one-pot solvothermal method is synthesized, and sulfonated poly (ether ether ketone)/NUS-X (SPEEK/NUS-X) hybrid membranes are prepared by mixing NUS into SPEEK matrix. Among them, SPEEK/NUS-1.5 has the highest proton conductivity (177.76 mS cm −1 , 70 °C, 100% RH) and maintain a 300 h conductivity stability. And its maximum power density was 423.2 mW cm −2 , exceeding pristine SPEEK by 2.20 times. Compare to the pristine SPEEK membrane, it is interesting to note the disappearance of SAXS scattering peak of SPEEK/NUS-1.5. It is speculated that this phenomenon was caused by the generation of acid-base pairs between –NH 2 and –SO 3 H, and the improved hydrogen bonding network provides more proton transport channels and immobilizes sulfonic acid groups for improved durability. The resultant proton conductivity is stable over 300 h with about 90% retention.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Siqi Fang,Zhengang Bu,Yuanlin Zhan,Wenzhuo He,Yibin Huang,Jianhua Li
The indiscriminate of tetracycline (TC) has led to significant environmental and health concerns, particularly the proliferation of antibiotic resistance. This study presents a visible-light photocatalytic composite membrane with a Z-scheme heterojunction to improve TC removal efficiency and address the challenge of catalyst powder recovery in practical applications. Firstly, the PI/NH 2 -UiO-66 (PNs) composite photocatalyst was synthesized via a one-step thermal solvent method. Subsequently, the PVDF/MXene/PI/NH 2 -UiO-66 (PMPNs) composite fiber membrane was successfully fabricated by stably loading the PNs and MXene onto PVDF fiber membranes through electrospinning. Under visible light irradiation, the removal efficiency of TC by the PMPN1.5 composite fiber membrane could reach 86.07% through the combined effects of filtration, adsorption, and photocatalysis. Even after three cycles, the recovery rate of the PMPN1.5 membrane could still reach 86.16%. The enhanced photocatalytic performance was due to the Z-scheme heterojunction between PI and NH 2 -UiO-66. This heterojunction structure enhanced the redox capability of the photocatalyst. Additionally, the incorporation of MXene facilitated effectively charged carrier transfer at the heterojunction interface, prolonging the electron-hole separation time and further improving the photocatalytic capability. This study successfully integrates photocatalytic technology with membrane separation to develop a visible light-responsive composite fiber membrane with considerable potential for treating antibiotic-contaminated wastewater. The developed membrane not only mitigates fouling but is also easily recyclable, minimizing the risk of secondary pollution.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Xinnan Ma,Juan Han,Jiacong Wu,Yang Zhou,Chunmei Li,Lei Wang,Yang Lu,Yun Wang
Efficiently enhancing hydrogen peroxide (H 2 O 2 ) production via photocatalysis remains challenging. This study employed genetic engineering to express His-tagged superoxide dismutase (His-SOD), which was selectively anchored onto the coordinatively unsaturated metal sites of etched UIO-66-NH₂ (UIO-66-NH 2 etch ) through coordination-driven assembly. The synergistic effect between His-SOD and UIO-66-NH 2 etch significantly enhanced both the stability and substrate affinity of the enzyme, while simultaneously boosting the photocatalytic activity of the MOF. Compared to its free counterpart, the immobilized His-SOD exhibits a 62 % increase in catalytic efficiency and a more than threefold extension in thermal deactivation half-life. The fabricated UIO-66-NH 2 etch @His-SOD composite achieved an impressive H 2 O 2 production rate of 3890.37 μmol·g −1 ·h −1 , exceeding that of the pristine UIO-66-NH 2 by over 2.5 times within 1 h and maintaining a 1.7-fold enhancement after 4 h. Owing to SOD's inherent superior antioxidative capabilities, the composite material demonstrates exceptional recyclability, retaining 95 % of its initial catalytic activity after four consecutive cycles. This study achieves specific immobilization of functionalized fusion proteins onto photocatalysts, and represents the first introduction of SOD into photocatalytic H 2 O 2 synthesis. This advancement provides valuable insights for the future integration of biocatalysts and synthetic photocatalysts, opening new avenue for research on photo-enzyme coupled catalysis.
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PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
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2024
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IF 12.7
Tianchen Zhang,Yijiao Xue,Fei Song,Zheng Pan,Meng Zhang,Yonghong Zhou
As we all know, in the field of safety protection, it is crucial to develop protective materials with fire-retardant and vibration-damping properties. However, it is a challenging task to integrate different properties into a single polymer. To meet this challenge, we successfully developed a functionalized nano flame retardant (UiO-66-NH 2 @DOPO) by modifying UiO-66-NH 2 with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). This flame retardant was then incorporated into a porous polyurethane foam (MPUF) synthesized from a bio-based polyol, resulting in a bio-based MPUF composite with excellent vibration-damping, fire-retardant, smoke-suppressing, and anti-dripping properties. Due to the intumescent fire-retardant system formed by UiO-66-NH 2 and DOPO, when the additional amount of UiO-66-NH 2 @DOPO reached 25 %, the LOI value of the MPUF composite material was increased to 31.2 %, and the total smoke production (TSP) was reduced by 80.64 %. In addition, it obtained a V-0 rating in the UL94 test and exhibited excellent anti-dripping properties. In addition, owing to the reinforcement effect and stress dissipation of UiO-66-NH 2 @DOPO, the MPUF composites exhibited excellent energy dissipation and vibration-damping properties (maximum loss factor of 1.32 at 1.0 Hz). This new bio-based MPUF composite material has broad application prospects. It can become an innovative self-supporting vibration-damping and protective material in sports, transportation, and aerospace.
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MICROCHIMICA ACTA
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2025
·Vol. 192
·期 7
·1-10
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IF 5.3
Chen Fei,Wang Xiang,Yan Lei,Lin Zhixiong,Zheng Weijun,Wu Dianming,Qiu Bin,Fang Yifan,Liu Mingkun
By preparing gold nanoparticles-graphdiyne (Au-GDY) as sensing substrate and [Ru(NH 3 ) 6 ] 3+ -UiO-66-NH 2 MOFs (Ru-UiO-66) as signaling probe as well as linking the as-prepared Au-GDY and Ru-UiO-66 with the specific peptide (PT) of MMP-7 to form Ru-UiO-66/PT/Au-GDY, a cost-effective and sensitive electrochemical sensor was designed for the detection of matrix metalloproteinase-7 (MMP-7) which is an important biomarker for tumor and biliary atresia. The superior electrical properties, easy preparation, large surface area, and high stability of Au-GDY make it be a desirable substrate to immobilize PT. The unique structure of UiO-66-NH 2 is beneficial to assemble [Ru(NH 3 ) 6 ] 3+ probe and link PT. In the absence of MMP-7, the Ru-UiO-66/PT/Au-GDY modified electrode exhibited a prominent peak current of [Ru(NH 3 ) 6 ] 3+ , which is decreased after the addition of target MMP-7 since it can specifically recognize and cleave PT to induce the Ru-UiO-66 leave the electrode. The experimental results showed that the decrease of the [Ru(NH 3 ) 6 ] 3+ signal has a linear relation with the concentrations of MMP-7 in the range 0.01 pg mL −1 –10.0 ng mL −1 . By optimizing experimental conditions, the achieved detection limit (LOD) for MMP-7 is 5.0 fg mL −1 . The analysis of real serum samples has excellent accuracy. The simplicity of preparation and sensitivity make the Ru-UiO-66/PT/Au-GDY sensor a considerable promising analysis tool for MMP-7 detection. Graphical abstract
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PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Yao Lei,Chengli Xie,Tong Xu,Min Wang,Lianzhe Hu,Zhining Xia
Nanozymes have attracted increasing attention in sensors owing to their capacity for catalytically converting substrates into colored or luminescent products. However, the lack of sensing selectivity limits their practical use. Herein, a ligand engineering strategy was proposed to improve the selectivity of UiO-66 nanozyme. Upon the perfluorination of bridging ligands, the resulting UiO-66-F 4 nanozyme exhibited higher phosphatase-like catalytic activity than the pristine UiO-66. More importantly, UiO-66-F 4 exhibited a remarkable specificity towards Al 3+ , which was ascribed to the specific coordination interaction of Al 3+ with F groups and oxygen-containing groups of UiO-66-F 4 . After incubation with Al 3+ , the aggregation of UiO-66-F 4 nanosheets occurred, which further results in the significant decrease in its catalytic activity. Base on this finding, a colorimetric method for selective detection of Al 3+ was proposed. The linear range is 2–30 μM with a detection limit as low as 0.27 μM. In addition, as an adsorbent for Al 3+ , UiO-66-F 4 also exhibited excellent adsorption performance with a capacity of 27.04 mg/g.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2022
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IF 4.326
Longsheng Pei,Hanlun Yang,Shouhui Chen,Li Wang
The metal–organic framework (MOF) UiO-66-NH2 was synthesized and attached to kenaf stem-derived three-dimensional macroporous carbon (3D-KSC) simultaneously, and then, the isothiocyanate functional group was introduced into UiO-66-NH2 MOFs to prepare UiO-66-NHC(S)NHMe/3D-KSC nanocomposites. The amount of UiO-66-NHC(S)NHMe MOFs on 3D-KSC can be controlled easily by the monomer concentration. There were three adsorption sites (two nitrogen atoms and one sulfur atom) on each structural unit of UiO-66-NHC(S)NHMe for adsorption toward heavy metal ions (HMIs) and well-regulated pores and 3D macropores of 3D-KSC to promote the transfer of HMIs. Therefore, UiO-66-NHC(S)NHMe/3D-KSC nanocomposites can be applied for the removal and electrochemical detection of Cd2+, Pb2+, Cu2+, and Hg2+. The detection limits of Cd2+, Pb2+, Cu2+, and Hg2+ were 0.0125, 0.0124, 0.0111, and 0.0094 μM, respectively. The sensitivities were 879.1, 887.6, 992.5, and 1160.7 μA μM–1 cm–2, respectively. UiO-66-NHC(S)NHMe/3D-KSC showed fine reproducibility and stability as well as strong anti-interference ability. In addition, the HMIs can be removed effectively by UiO-66-NHC(S)NHMe/3D-KSC with the maximum adsorption capacity of 88, 391, 223, and 935 mg·g–1 for Cd2+, Pb2+, Cu2+, and Hg2+, respectively. The results show that UiO-66-NHC(S)NHMe/3D-KSC has great potential for the adsorption and detection of HMIs.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Zhikun Huang,Haojie Yu,Li Wang,Xiaowei Liu,Shuning Ren,Jinyi Liu
Designing graphitic carbon nitride (CN) based heterostructured photocatalysts with high catalytic activity is highly desired for peroxymonosulfate (PMS) activation to degrade organic pollutants from water. Herein, a novel heterostructured composite (U-F@CN) consisting of ferrocene-modified Uio-66-NH 2 (U-F) and CN was synthesized. The U-F@CN exhibited superior photocatalytic performance to degrade bisphenol A (BPA) in the presence of PMS under visible light. The experimental results indicated that BPA could be removed entirely by U-F@CN within 60 min under visible light irradiation. In addition, the outstanding photocatalytic activity could be maintained at high level in a wide pH range, appropriate temperature region and natural water condition. Benefiting from the good chemical stability, outstanding optical property and in-situ generation of interfacial heterojunction of U-F@CN, the interfacial transport of photogenerated charges could follow the Z-scheme mechanism, which can accelerate the charge separation and transport to yield abundant reactive active species (ROS) to efficiently active PMS and under visible light. This work provides a novel approach to design CN-based heterostructured photocatalysts with high stability and superior photocatalytic activity for environmental remediation.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2019
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IF 7.015
Jiaqi Wang,Yuqing Zhang,Ying Wang,Shuai Sun
To efficiently clean oily wastewater with the linear anion polyacrylamide (APAM), selective adsorption strategy belonging to phase equilibrium separation is introduced into the membrane separation . Herein, bimetallic Ce-UiO-66-NH 2 /diatomite (CUD) were first synthesized by a one-step hydrothermal method and then employed as a functional layer to form CUD self-assembled membrane (CSA-membrane). CUD particles were characterized by FT-IR, XRD and SEM, and CSA-membrane was observed by SEM. The separation and the selective adsorption properties of CSA-membrane formed under the optimum conditions for APAM in oily wastewater were investigated. The results demonstrate that the size of CUD particles with proper sphericity is mainly 20 μm. Furthermore, CSA-membrane simultaneously exhibits fascinating separation and selective adsorption properties for cleaning oily wastewater, namely the concentration of oil decreases from 78.1 mg L -1 to 6.8 mg L -1 , and flux of CSA-membrane reaches 789.5 L m -2 h -1 . Remarkably, the adsorption capacity of CSA-membrane for APAM is 161.5 mg g -1 , while showing the APAM removal rate of 51.3%. Therefore, CSA-membrane with the synergetic effect of phase equilibrium and rate separation is promising alternative for cleaning oily wastewater with APAM.
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高影响因子
COMPOSITES PART B-ENGINEERING
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2019
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IF 6.864
Wenwen Guo,Shibin Nie,Ehsan Naderi Kalali,Xin Wang,Wei Wang,Wei Cai,Lei Song,Yuan Hu
The SiO 2 @metal organic framework (Universitetet i Oslo-66, UiO-66) core–shell microspheres were constructed through covalent linkage between amine groups in UiO-66-NH 2 and epoxy groups on the surface of silica . The morphology and size of the SiO 2 @UiO-66 core–shell microspheres could be simply controlled by tuning the ratio between UiO-66-NH 2 and epoxy terminated silica (E-SiO 2 ). As observed by TEM , the SiO 2 @UiO-66 hybrids showed better dispersion state within epoxy matrix compared to either E-SiO 2 or UiO-66-NH 2 . The incorporation of SiO 2 @UiO-66 hybrids slightly promoted the thermal degradation of the resultant epoxy composites but improved residual yield. The dynamic mechanical analysis results indicated that the SiO 2 @UiO-66 hybrids slightly increased the glass transition temperature and the modulus. The SiO 2 @UiO-66 hybrids exhibited higher efficiency in reducing the heat release rate and the smoke production rate compared to either E-SiO 2 or UiO-66-NH 2 . The influence of the component ratio in SiO 2 @UiO-66 on flame retardancy of the epoxy composites was also studied by cone calorimeter . Specifically, the SiO 2 @UiO-66 hybrid with medium ratio (SiO 2 @UiO-66-2) exhibited maximum reduction in peak heat release rate (−31%), total heat release (−23%) and total smoke production (−16%). The char residues were investigated by the Fourier transform infrared spectra, scanning electron microscopy and X-ray photoelectron spectroscopy, which demonstrated that the enhanced flame retardancy of EP/SiO 2 @UiO-66-2 was attributable to the continual morphology and high thermal resistance originated from the presence of the silicon and zirconium complex. These favorable characteristics including high flame retardant efficiency and good smoke suppression make SiO 2 @UiO-66 hybrids promising for flame retardant polymers application .
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Qiangyu Zhao,Zhenyuan Zhao,Renzhi Rao,Yang Yang,Songyuan Ling,Fukun Bi,Xiaoyu Shi,Jingcheng Xu,Guang Lu,Xiaodong Zhang
In this paper, a simple solvothermal synthesis method was proposed for the preparation of metal organic framework/graphene oxide hybrid nanocomposite (UiO-67/GO). A series of UiO-67/GO composites were prepared by varying the addition forms and amounts of GO, and the optimal synthesis conditions were screened. The composites were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), transmission Electron Microscope (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopic (XPS), water contact angles (CA) and thermogravimetric analysis (TGA). The adsorption capacity and the adsorption process of toluene were investigated by dynamic adsorption and adsorption kinetics , respectively. The results indicated that 67/GO-0.5% reached the maximum adsorption capacity (876 mg g −1 ), which far exceeded the other adsorbents. Kinetic model and the Weber-Morris model correlated satisfactorily to the experimental data. The improved adsorption performance was attributed to GO, which enhanced π-π interaction, promoted defect generation and provided more adsorption sites. Finally, the excellent regeneration performance of the adsorbent was verified by temperature programmed desorption (TPD) and cyclic adsorption–desorption experiments. Moreover, the adsorption mechanism was further revealed. Combined with the related adsorption experiments and the density functional theory (DFT) analysis, the efficient removal of toluene by UiO-67/GO was attributed to the cooperation of defects, π-π interaction and hydrogen bonding .
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