SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Zheng Dong,Yangyang Xin,Bowen Xiang,Baolu Cui,Ruilu Yang,Wenwu Zhou,Jianwei Liu,Jiadi Li,Shuangshuang Long,Libing Qian,Xinxin Che,Jinwen Fan,Zhiyuan Yang,Yaping Zheng,Dechao Wang
Porous liquids（PLs）are a new type of material that combines the permanent cavities of porous solids with the fluidity of liquids, and they have presented broad application prospects in gas capture and separation. However, non-covalent forces are introduced between pore generators and sterically hindered solvents in order to reduce the weak intermolecular forces that often lead to self-aggregation of pore generators. This will result in the formation of an interface layer with direct interactions between pore generators and sterically hindered solvents. Therefore, it is inevitable that the pores and adsorption sites of pore generators will be largely occupied and blocked, leading to a decrease in the sorption capacity of PLs. Herein, we propose a novel interface-protection strategy achieved by introducing a functional interface layer for preparing type III PLs, where UiO-66 is used as the pore generators. And then, SiO 2 is grown on the surface of UiO-66 via the tetraethyl orthosilicate (TEOS) hydrolysis process, thus obtaining a new pore generator UiO-66@SiO 2 with controllable layer thicknesses of SiO 2 . Next, PLs are constructed by using UiO-66@SiO 2 as the new pore generator and 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF 6 ) as the sterically hindered solvent, respectively. Thus, the constructed SiO 2 layer transforms the direct interaction between pore generators and sterically hindered solvents, which can protect the internal adsorption sites and pore structures to a large extent. Notably, UiO-66@SiO 2 -PL demonstrates not only promising CO 2 sorption capacity but also excellent CO 2 /N 2 and CO 2 /CH 4 separations. More importantly, the proposed idea of the interface-protection strategy opens a new horizon for constructing PLs with superior separation performance considering the abundant libraries of pore generators and sterically hindered solvents.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2025
·
IF 5.4
Fengxing Long,Yanjia Zhou,Xiaodong Tang,Zheng Wang,Zhedan Yang,Liping Feng
For lithium extraction processes from liquid lithium resources, surmounting the interference of coexisting ions on the selective extraction of Li + − especially the selective separation of Mg 2+ and Li + − presents a challenging task. UIO-66 and HKUST-1, both metal-organic frameworks (MOFs), are synthesized using organic ligands with benzene ring groups. To boost the Li + adsorption and recognition capabilities of these two materials, LiNO 3 was introduced as a template, which not only constructs a Li + -size-adapted microenvironment within the adsorbent framework but also functions as a mineralizer, facilitating the formation of more uniformly sized crystals. The modified Li/UIO-66 and Li/HKUST-1 achieved maximum Li + adsorption capacities ( Q ) of 35.57 and 26.33 mg/g, respectively, reaching adsorption equilibrium within approximately 3 h. Li/UIO-66 showcases excellent Mg 2+ /Li + separation performance and maintains certain separation factor even in mixed solutions containing multiple interfering ions. Although Li/HKUST-1 demonstrates a stronger tendency for selective adsorption of higher-valent ions, it holds promise for the removal of interfering ions from solutions, thereby contributing to the overall optimization of lithium extraction processes.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
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IF 5.4
Habib Ur Rehman,Shazia Ghaffar,Mujeeb Ur Rahman,Saeed Ahmed,Faakhar Raza
Arsenic as an emerging micropollutant, causing the world ecosystems polluted due to its high toxicity to the environment. In order to removal arsenate As (V), many metal organic frameworks (MOFs) have been synthesized as adsorbents. However, the mostly existing MOFs adsorbents have a slow adsorption rate, agglomeration and poor stability in water.Therefore, it is highly desired to explore a novel adsorbent for the more efficient and rapid removal of As(V) from aqueous solution. Herein, we synthesized monodisperse microspheres with amino functionalized MOF UiO-66 on the silica core for the first time.The synthesized adsorbent was charecterised using scanning electron microscopy (SEM), transmission electron microscopy (TEM), N 2 adsorption desorption isotherms, x-ray diffraction (XRD).The obtained results revealed that it exhibit monodisperse core shell microspheres and showed fast separation of As (V) from aqueous solution. The Kinetic data showed that the As (V) removed rapidly, within 5 min only and the adsorption kinetics described by the pseudo second order kinetic model.The adsorption capacity of the adsorbent was 22.62 μg/g at pH 2. The adsorption experiment showed that adsorbent prepared with UiO-66-NH 2 @SiO 2 could rapidly remove the arsenate from aqueous solution. FTIR results indicated that As (V) is removed successfully from aqueous solution. Electrostatic interaction between UiO-66-NH 2 and As (V) should be the proposed mechanism.
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Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Hanhui Wang,Yi Zhang,Tingting Li,Zhiming Zhang,Libao An,Yeqi Zhang,Xinyu Sui
A hydrophobic metal-organic framework (MOF) nanofibrous membrane (NFM) with excellent comprehensive properties was successfully fabricated by a simple method. Benefiting from the excellent hydrophobicity, chemical stability, thermal stability and good structural fit of UiO-66-F 4 and polysulfone (PSF), the UiO-66-F 4 /PSF NFM has been directly prepared via co-electrospinning of UiO-66-F 4 and PSF without any additional modifications. Characterization with PXRD, FT-IR and XPS indicated that UiO-66-F 4 crystals were effectively incorporated into PSF fibers and their crystal structure was not destroyed. The obtained UiO-66-F 4 /PSF NFM exhibited improved hydrophobicity compared with the parent materials, even after the treatment with heat, acid or alkali solutions. Therefore, it was competent for separating different forms of oil-contaminated water, including oil-water mixture and water-in-oil emulsion, even in harsh conditions. In the case of hot oil-water mixture, UiO-66-F 4 /PSF NFM still showed a separation efficiency of about 99 % and an oil flux of 1036 L m −2 h −1 . More importantly, the separation efficiency remained relatively stable during 30 cycles of separation, indicating that UiO-66-F 4 /PSF NFM can meet the requirements of long-term use. In view of this, UiO-66-F 4 /PSF NFM had the potential to treat practical oily wastewater in harsh environments.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Sina Seifi,Azadeh Ghaee
In this study, a novel nanocomposite scaffold comprising pectin, gelatin, and amoxicillin trihydrate-loaded UiO-66-NH 2 metal-organic frameworks (UiO-66-NH 2 @AMX) was fabricated for skin tissue engineering applications. UiO-66-NH 2 nanoparticles were synthesized hydrothermally and subsequently loaded with amoxicillin trihydrate. Finally, UiO-66-NH 2 @AMX nanoparticles were incorporated into pectin-gelatin scaffolds using the freeze-drying method. FE-SEM imaging confirmed the octahedral morphology of the nanoparticles before and after drug loading. FTIR analysis demonstrated successful drug incorporation via non-covalent interactions. DLS and zeta potential measurements showed that UiO-66-NH 2 nanoparticles had a mean size of 218.5 ± 14 nm and a surface charge of +44.1 ± 2.7 mV. After drug loading, the size slightly increased to 248.8 ± 19 nm, and the surface charge decreased to +32.6 ± 2.5 mV, while maintaining colloidal stability. All of the scaffolds showed porous structures with interconnected pores in SEM imaging. The incorporation of UiO-66-NH 2 @AMX nanoparticles into the pectin-gelatin scaffolds up to 3 % (w/w) increased the tensile strength and Young's modulus of the scaffolds 37.6 % and 56.7 %, respectively. Antibacterial activity was evaluated by CFU assay, where UiO-66-NH 2 @AMX containing scaffolds revealed significant bacterial reduction against E. coli and S. aureus colonies. MTT, cell adhesion, and cell scratch assays conducted on L929 fibroblasts. All of the scaffolds demonstrated >85 % cell viability after 3 days of culture. Furthermore, scaffolds with 3 % (w/w) UiO-66-NH 2 @AMX enhanced cell adhesion and increased migration rate in scratch closure assay. Overall, the results indicate that the novel nanocomposite scaffolds are promising candidates for skin tissue engineering and wound healing applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yuxin Li,Zhimin Wang,Yuanfeng Wei,Ting Wang,Maosong Zhao,Jie Luo,Jun Zhou,Zhaoshuang Li,Kai Yin,Chengbin Liu
Water decontamination from arsenic-contaminated groundwater is critical to the health of millions of households worldwide. However, efficiently removing the low-adsorbing As(III) remains challenging. Herein, a multifunctional biocomposite bead UiO-66-NH 2 -Cl@PCB integrating defects, oxidation and adsorption properties was prepared to effectively remove As(III). The N -chlorosulfonamide bound within the embedded UiO-66-NH 2 -Cl oxidizes the lower-adsorbing As(III) to As(V), which could be effectively adsorbed by the defect-rich MOF, while the porous chitosan bead (PCB) host ensures the utilisation of the reactive sites of UiO-66-NH 2 -Cl. Using 1 g/L of UiO-66-NH 2 -Cl@PCB, 1 mg/L of As(III) can be reduced to under 10 μg/L in 300 min. Furthermore, similar As(III) removal efficiencies were achieved across a wide pH spectrum (3–9) or in the presence of interfering substances (anions, cations, organic matter). High concentrations of phosphate will inhibit its performance. As(III) removal followed the Freundlich isotherm modal, and its maximum removal capacity reached 58.09 mg/g at pH 7. Furthermore, at equilibrium concentrations of 10 μg/L, its As(III) removal capacity exceeded 10 mg/g. UiO-66-NH 2 -Cl@PCB can purify the As(III)-spiked groundwater to meet the drinking standard level. Using NaOH solution for regeneration, the removal efficiency maintained above 70 % in the fifth cycle. Additional chlorination treatment can significantly improve reusability. 2.4 g of UiO-66-NH 2 -Cl@PCB packed fixed-bed column was capable of purifying 3820 BV of groundwater containing 100 μg/L of As(III). The proposed UiO-66-NH 2 -Cl@PCB has the potential to be an easy-to-use and reliable material for efficient As(III) removal.
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LANGMUIR
·
2025
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IF 3.9
Heng Li,Chengzhong Zhang,Yuhang Jiang,Wenwu Ni,Mingshuo Li,Jing Wang
Widespread dye contamination poses a serious threat to humans and aquatic environments. Metal–organic frameworks (MOFs) with abundant reactive groups and high specific surfaces are candidates for the adsorption of dyes. In this study, good growth of UiO-66-SO3H crystals on the surface of nylon-6 fibers was achieved based on the idea of in situ growth. UiO-66-SO3H with a sulfonic acid group was successfully introduced into nylon-6 electrostatic spinning fiber, and the UiO-66-SO3H@nylon-6 membrane with high specific surface area and a three-dimensional mesh structure was obtained, which effectively solved the problems of clogging of the equipment, difficulty in being separated and recovered from the water, the possible secondary pollution of the water environment caused by the powder form of the MOF material, etc. The UiO-66-SO3H@nylon-6 membrane has a good adsorption capacity for rhodamine B (RhB), and the experimental data are consistent with the pseudo-second-order kinetic model and Langmuir model, which shows that the adsorption is a spontaneous heat absorption process. Pore-filling, hydrogen bonding, π–π interactions, and electrostatic attraction induced by –SO3H are the adsorption mechanisms of RhB on this adsorbent. In conclusion, the UiO-66-SO3H@nylon-6 membrane is an adsorbent capable of rapid adsorption of RhB and can be easily separated from water for recovery, regeneration, and utilization. This study may provide ideas for the application of MOFs in the field of pollutant removal.
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高影响因子
MICROCHIMICA ACTA
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2025
·Vol. 192
·期 5
·1-9
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IF 5.3
Li Rui,Que Wenzhong,Han Haiyan,Shi Honghui,Wang Rongfeng,Qiu Bin
IL-17 (interleukin-17) is a common proinflammatory cytokine and can be adopted as an important biomarker for several diseases; it is thus very necessary to design an effective method for monitoring IL-17. Herein, by preparing silver nanoparticles/graphdiyne (Ag/GDY) with simple electroless deposition as the sensing platform and methylene blue/UiO-66-NH 2 MOFs (MB/MOFs) as the signaling-amplifier, a highly efficient sandwich-like electrochemical immunosensing (SLEI) platform was designed for IL-17 detection. The superior electrical property, easy preparation, large surface area, and high stability of Ag/GDY make it a desirable substrate to immobilize primary antibody of IL-17. Meanwhile, the unique structure of UiO-66-NH 2 is beneficial to immobilize MB probe and secondary antibody. By optimizing experimental conditions, the MB current obtained at the as-designed SLEI platform increases along with IL-17 increase, and the related linearity is 1.0 pg mL −1 –1.0 ng mL −1 coupled with a low detection limit of 0.3 pg mL −1 . It is expected that the SLEI platform based on Ag/GDY and MB/MOFs shows some potential application for IL-17 detection. Graphical abstract
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高影响因子
MOLECULES
·
2025
·Vol. 30
·期 14
·2966
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IF 4.6
Tian Lan,Xiechun Liu,Haifeng Cong,Xiaofan Ding,Jing Zhao,Songtao Xiao
In this study, a novel adsorbent, UiO-66-H3IMDC, was successfully prepared by functionalizing UiO-66 with imidazole-4,5-dicarboxylic acid (H3IMDC). The effective functionalization of H3IMDC on UiO-66 was confirmed by powder X-ray diffraction (PXRD) and Fourier transform infrared spectroscopy (FT-IR). The relationships between the adsorption of U(VI) on UiO-66-H3IMDC and the contact time, the pH of the solution, as well as the initial concentration of U(VI) were investigated. Additionally, the selective adsorption of U(VI) by UiO-66-H3IMDC and its cyclic regeneration performance were also studied. The results demonstrate that the UiO-66-H3IMDC adsorbent exhibits excellent adsorption performance for uranium in aqueous solutions.
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ENVIRONMENTAL RESEARCH
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2024
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IF 7.7
Ya Jiao,Xian Li,Guohao Cheng,Jingfan Chen,Li Wang,Yongli Liu,Guifen Zhu
Metal–organic frameworks (MOFs) are used as novel adsorption materials owing to their large surface area and tunable pore size. However, the lack of selectivity considerably limits their application. Consequently, designing functionalized MOFs with specific recognition abilities is essential for enhancing their adsorption performance. Herein, we synthesized a functionalized NH 2 -UiO-66 composite modified by molecularly imprinted polymers (MIP@NH 2 -UiO-66) via a one-step polymerization process in which NH 2 -UiO-66 and MIP were formed simultaneously. Results demonstrate that MIP@NH 2 -UiO-66 effectively recognized sulfamethoxazole (SMX) in complex matrices. The adsorption equilibrium was reached in only 30 min, and this fast SMX adsorption on MIP@NH 2 -UiO-66 was described by the Avrami kinetic model, which indicates a spontaneous and exothermic adsorption process. Within the pH range of 3.0–10.0, MIP@NH 2 -UiO-66 exhibited an optimal binding capacity for SMX, and the maximum adsorption of SMX was 68.36 mg g −1 at 25°C, which exceeded those of existing adsorption materials (< 60.10 mg g −1 ). Additionally, MIP@NH 2 -UiO-66 was regenerated for ∼17 cycles compared to less than eight cycles for the other adsorbents. MIP@NH 2 -UiO-66 effectively removed 90.58%–99.60% of SMX from river water, rainwater, soil, sediment, chicken, pork, and milk samples, with a relative standard deviation of less than 4.43%. The superior adsorption of SMX on MIP@NH 2 -UiO-66 was primarily driven by the synergistic effects of the imprinting sites, hydrogen bonding, and electrostatic forces. The one-step polymerization method substantially simplified the synthesis process and reduced the costs, which are promising factors for the synthesis of MOFs with high selectivity.
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DESALINATION
·
2025
·
IF 9.8
Xinyue Zhang,Shichen Xiao,Zerong Miao,Xudong Wang,Jin Wang,Jiajin Hao,Junwei Xin,Huihui Zhang,Lei Wang
The selective recovery of lithium from salt-lake brines using functionalized polyamide nanofiltration (NF) membranes offers a promising strategy to alleviate the global lithium resource shortage. However, the structural controllability of functional fillers and their interfacial compatibility remain critical challenges in constructing high-performance NF membranes. In this study, a polyamide NF membrane was modified with defect-engineered and gel-state UiO-66-NH 2 nanoparticles, combined with an external electric field, to achieve efficient Li + /Mg 2+ separation. By tuning the HCl/HAc ratio, the nucleation and growth of UiO-66-NH 2 were regulated, yielding gel-state nanoparticles with abundant defects (defect coordination number ~ 0.73), excellent dispersibility, and high protonation, facilitating interfacial integration with the polyamide matrix. In situ characterization revealed that defect-engineered and gel-state UiO-66-NH 2 enhanced the membrane's positive surface charge and formed a “spinal-like” microstructure. Under the optimal acid ratio, the nanoparticles promoted higher polyamide cross-linking, reducing the average effective pore size from 0.54 to 0.46 nm, enabling synergistic control of both physical and chemical membrane properties. With an applied electric field, monovalent ion dehydration and migration were accelerated, enhancing ion decoupling and achieving a separation factor of 83.87 for Li + /Mg 2+ at an applied current of 6 mA. This work demonstrates a triple synergistic mechanism involving interface regulation, structural optimization, and electric-field coupling, highlighting the pivotal role of gel-state defect-engineered MOFs in tuning membrane microstructure and surface charge. This finding provides new theoretical guidance and design strategies for efficient lithium recovery using electric-field assisted functional nanofiber membranes.
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FUEL
·
2025
·
IF 7.5
Li-Li Xue,Qing He,Si-Wen Li,Jian-She Zhao
In recent years, the escalating global demand for clean energy has underscored the urgency of developing high-efficiency fuel desulfurization technologies. This study reports the facile synthesis of a molded fiber-supported composite catalyst, POM@UiO-66-NH 2 @CF (PU N C), via impregnation, integrating polyoxometalates (POMs) with amino-functionalized metal–organic frameworks (MOFs) on cellulose fibers (CF). The catalyst delivers exceptional performance in ultra-deep oxidative desulfurization (ODS), enabled by systematic optimization of reaction parameters using response surface methodology (RSM) with a Box-Behnken design (BBD). Through RSM optimization and adjustment, the actual desulfurization conditions were determined as 66 °C, O/S = 7, 7 mL DMF, and 2 catalyst pieces and PU N C achieved a validated 99.26 % desulfurization efficiency for dibenzothiophene (DBT) in model fuels, demonstrating close agreement with theoretical predictions. Kinetic analysis revealed the ODS reaction conformed to a pseudo-first-order kinetic model with a low activation energy of 2.45 kJ/mol, while EPR spectroscopy confirmed ·O 2 − radicals as the dominant reactive species, highlighting a POM-mediated radical oxidation pathway. PU N C exhibited robust reusability, maintaining >95 % efficiency over 5 consecutive cycles. The catalyst’s performance is attributed to the synergistic architecture of MOF-fiber supports, where 3-chloropropyltrimethoxysilane (CPTMS) enables covalent bonding of UiO-66-NH 2 to CF, creating amine-rich sites for electrostatic POM immobilization and enhanced stability. This work showcases the synergy between structural design and RSM-driven optimization, offering innovative insights for developing high-efficiency, environmentally benign molded catalysts for ultra-deep ODS and related oxidative processes.
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