MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiaojuan Hu,Dan Zhang,Hongji Li,Mengyang Xu,Jiaqi Geng,Juan Zhou,Wei Sun
Metal–organic frameworks (MOFs) are ideal for fabricating sensors due to their well-defined and highly tailored nano-porous architectures. Herein, a series of zirconium-based MOFs (UiO-66 and UiO-66-X, X = NH 2 , Br, NO 2 ) with functionalized ligands and uniform morphology were synthesized by incorporating L-histidine as a structural modulator. Subtle changes in responses are achieved by altering the MOFs guest adsorption affinities through the incorporation of functional groups into its linkers. The UiO-66 and UiO-66-X material, used in a quartz crystal microbalance (QCM) gravimetric sensor, enables the ultrasensitive detection of toluene at room temperature (25 °C) and fixed humidity (55 % RH). Compared with UiO-66, UiO-66-Br and UiO-66-NO 2 , UiO-66-NH 2 exhibited superior selectivity toward toluene vapor owing to the presence of proper molecular size and π–π stacking/hydrogen bonding between the microporous framework of UiO-66-NH 2 and toluene molecules. Furthermore, the UiO-66-NH 2 based QCM sensor demonstrated exceptional sensitivity (190 Hz @ 10 ppm) and short response/recovery time (less than 6/21 s), achieving detection limit as low as 50 ppb for toluene under air ambient conditions. This work provides valuable insights into the rational design of ligand-functionalized MOFs for gas sensing applications.
研究领域:
材料科学
·
传感器与仪器
·
气体传感技术
·
纳米材料
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Shaoxuan Huang,Xin Xu,Wenlu Huang,Zihao Wu,Maogang He,Xiangyang Liu
In order to enhance the CO 2 capture performance of ionic liquids, this work synthesized porous ionic liquids (pILs) utilizing UiO-66 as the porous material and [DMIM][NTf 2 ] as a sterically hindered solvent. By controlling the MOF proportion within a low range (<2.0%), the pILs achieved a dual enhancement in both CO 2 solubility and diffusion coefficient. Comprehensive characterization confirmed the structural integrity, well-defined morphology, and correct chemical composition of the synthesized materials. The CO 2 solubility in the low-pressure region was measured by the isochoric saturation method, and the corresponding diffusion coefficients were calculated based on the semi-infinite volume model. The results demonstrated that the pILs achieved dual enhancement in both CO 2 solubility and diffusion coefficient exhibiting an increase of approximately 20% for both parameters. And the absorption-desorption experiment further showed an enhancement in CO 2 solubility, with over 94% cyclic efficiency after five cycles for the three representative absorption pressure. These results indicate the significant enhancement and exceptional absorption stability of pILs across a wide pressure range. The dual enhancement effect demonstrates the exceptional CO 2 capture performance offering important insights for the practical industrial application.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Detao Li,Li Xu,Feiqiang He,Limin Zhou,Zhijian Zheng,Qiang Guo,Shanshan Liang,Jinbo Ouyang
The stringent environmental regulations on uranium-containing wastewater have rendered traditional treatment methods largely inadequate, creating an urgent demand for high-performance and stable adsorbents. In this study, the modified UiO-66 with aminophosphonate groups (UiO-66-NH2–P) was used to enhance its U(VI) removal capacity from water through the synergistic effect of multifunctional groups. U6NP retains a well-defined MOF framework after acid immersion(pH 1–2). Under optimal conditions, the maximum U(VI) adsorption capacity reaches 320.81 mg/g. The adsorption behavior conformed to the PSO kinetic equation and the Langmuir model, indicating a spontaneous endothermic process. Furthermore, density functional theory (DFT) calculations, combined with optimized fitting using a cluster model, were performed to analyze various coordination modes of UO22+ in this system. The results provide atomic-level insights for the rational design of high-performance and high-stability adsorbent materials.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Zemin Li,Chen Zhang,Kebin Chi,Jingxian Hua,Yawei Gu,Yuxuan Wang,Chongqing Wang,Qihan Gong,Yichang Pan,Rujing Hou
The separation of hydrocarbon isomers is essential in petrochemical upgrading; however, conventional distillation processes remain highly energy-intensive. Metal–organic framework (MOF) membranes have emerged as an energy-efficient alternative, yet the fabrication of intercrystalline defect-free membranes with precise microstructural control remains challenging. Herein, we report a modulator-controlled nucleation and growth strategy to direct the crystallization of UiO-66 membranes. Acetic acid (high pK a , weak deprotonation ability) was used to induce rapid nucleation and generate a uniform nanoparticle seed layer, whereas formic acid (low pK a , strong deprotonation ability) competed vigorously with ligands for zirconium coordination, promoting Ostwald ripening and facilitating the formation of a well-intergrown, molecular-sieving membrane. The optimized membrane exhibited a separation factor of 2.27 for (n-hexane + 3-methylpentane) versus 2,2-dimethylbutane. When challenged with a ten-component alkane isomer mixture mimicking light naphtha, a two-stage cascade process enriched low-octane alkanes from 49.0 to 90.5 wt% in the permeate stream, while simultaneously concentrating high-octane alkanes in the retentate. This work constitutes the first demonstration of acidity-modulated MOF membranes for the separation of industrially relevant alkane isomers, highlighting their potential to hybridize or replace energy-intensive distillation in the petrochemical industry.
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2026
·
IF 3.3
Yueqin Zhang,Li Zhou,Yuexin Du,Jiaqiang Xu,Junchen Chen,Lien-Yang Chou
Volatile organic compounds (VOCs), such as formaldehyde (HCHO) and acetone (C3H6O), are ubiquitous air pollutants in industrial and indoor environments and pose serious risks to human health, driving demand for selective, sensitive detection. Metal–organic frameworks (MOFs) are promising sensing nanomaterials due to their structural tunability and modifiable pore chemistry. However, the vast structural diversity of MOFs makes it difficult to identify materials with selective responses toward specific VOCs, and current development still relies heavily on empirical trial-and-error screening. Herein, we integrate density functional theory (DFT) calculations, quartz crystal microbalance (QCM) experiments and complementary spectroscopic characterization to establish a rational design strategy for VOC-selective MOF sensors, using functionalized UiO-66 as a model. DFT analyses quantify adsorption energies, hydrogen-bonding interactions, dipole coupling, and electronic perturbations between functionalized UiO-66 and HCHO or C3H6O. QCM measurements, Fourier-transform infrared (FTIR) and UV-vis spectroscopy verify the theoretical predictions. Our results indicate that UiO-66-NH2 preferentially responds to HCHO, while UiO-66-OH prefers C3H6O. This work shows a direct mechanistic link between the MOF structure and sensing performance, bypassing exhaustive empirical screening and laying a foundation for rational MOF sensor design.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Chunyan Zhang,Wenke Xie,Wenliang Li,Na Li,Lingxiang Zhang,Yuxiang Zhong,Liang Sun,Wenjun Li,Songtao Cai,Hu Chen,Zhongchang Wang,Jianxin Luo
Highly defective UiO-66 was prepared using a one-pot solvothermal approach with benzoic acid as a defect modulator. • The pore structure and hydrophilicity of UiO-66 can be regulated by tuning the load of benzoic acid. • BPA adsorption by UiO-66-B3 is a spontaneous exothermic process dominated by monolayer chemisorption. • The excellent BPA adsorption performance of UiO-66-B3 arises from a synergistic process. UiO-66, a Zr-based metal-organic framework (MOF), shows great potential in adsorption, catalysis, water treatment, and chemical shielding. Defect engineering has been employed to further enhance its adsorption performance. Nevertheless, conventional defective UiO-66 suffers from time-consuming synthesis and fragile porous structure, and its adsorption capacity needs further improvement. In this study, a highly defective UiO-66 (denoted as UiO-66-BX, where X = 0, 1, 2, 3, 4, and 5) was synthesized using a one-pot solvothermal approach, with BA as the defect modulator to trigger competitive coordination. Its adsorption performance was demonstrated using bisphenol A (BPA). The results demonstrated that the adsorption data of the UiO-66-B3 for BPA in wastewater were well-fitted by the pseudo-second-order kinetic model and the Langmuir model, and both Δ G and Δ H were below 0, indicating that it is a spontaneous exothermic process dominated by monolayer chemisorption. Meanwhile, the theoretical adsorption capacity of the UiO-66-B3 can be up to 340.14 mg∙g −1 at 298.15 K. Additionally, adsorption by the UiO-66-B3 showed excellent tolerance to high ionic strength (variation in the adsorption capacity <7%) and good reusability (variation in adsorption capacity <10%). The excellent adsorption performance of the UiO-66-B3 can be attributed to a synergistic process involving mesopore-induced pore filling, hydrogen bonding between Zr-OH sites and phenolic -OH, coordination bonding between Zr 4+ and O in -OH, and π-π stacking of benzene rings. This study provides a promising strategy for the development of defect-rich UiO-66 for efficient pollutant removal. Download: Download high-res image (210KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zongmian Zhang,Aiping Yang,Feiyan Wang,Qinghong Kong,He Gao
Mercury ions (Hg 2+ ) are extremely toxic, posing severe risks to human health and ecosystems even at trace concentrations. Their prevalence necessitates the development of rapid, selective, and portable methods for on-site Hg 2+ detection in environmental monitoring. Here we report a surface-enhanced Raman scattering (SERS) sensor that employs a capillary-immobilized Ag@UiO-66-NH 2 nanocomposite as the substrate for the indirect detection of Hg 2+ . The inner wall of a glass capillary was amino-functionalized and sequentially decorated with silver nanoparticles (AgNPs) and a zirconium-based metal–organic framework (UiO-66-NH 2 ). After that, Dithizone (DTZ) was immobilized onto the resulting Ag@UiO-66-NH 2 composite to form stable Raman-active complexes. In the presence of Hg 2+ , the strong chelation between DTZ and Hg 2+ induces distinct SERS signal changes, enabling highly sensitive and selective detection of Hg 2+ . A key advantage of this sensor is the ability to directly load microliter-scale samples into a pretreated capillary for on-site analysis using a portable Raman spectrometer. The sensor exhibits a linear response between the DTZ signal intensity and Hg 2+ concentration over a broad range (10 −12 –10 −5 mol·L −1 ), with excellent linearity (R 2 = 0.9900), uniformity, reproducibility, and selectivity against common interfering ions. This method was validated in environmental water samples, demonstrating good agreement with ICP-MS while simplifying sample handling and minimizing pretreatment. These findings underscore the sensor's considerable potential for practical, on-site monitoring of Hg 2+ in both environmental and industrial contexts.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Ying Gao,Jinxing Long
Conversion of ethyl levulinate to GVL was proposed using Pd 4 /UiO-66-NH 2 . • Pd 4 /UiO-66-NH 2 was constructed via a post-synthetic modification strategy. • Synergistic effects between Pd species and acidic sites drive superior performance. • GVL yield of 90% with 98.9% selectivity was achieved under 170 ℃ and 1.0 MPa H 2 . • The catalyst shows good recyclability, and can be reused for at least five runs. An efficient strategy is proposed for direct hydrogenation of ethyl levulinate (EL) to γ-valerolactone (GVL) using a highly dispersed palladium nanoparticles supported on the UiO-66-NH 2 framework (Pd/UiO-66-NH 2 ), which was prepared via a facile post-synthetic modification by anchoring palladium (Pd) nanoparticles on the framework's native -NH 2 groups. Under optimized conditions (170 °C, 1.0 MPa H 2 ), 90% yield and 98.9% selectivity of GVL were shown when the reaction was catalyzed by Pd 4 /UiO-66-NH 2 in cyclohexane. Catalyst characterization using XRD, N 2 adsorption-desorption, FT-IR, TEM, TGA, XPS and H 2 -TPR, confirmed that an intensive synergistic effect existed between the Pd and the acidic sites, which is responsible for the superior performance of Pd@UiO-66-NH 2 . The solvent effect and the feedstock adaptability were also investigated. Furthermore, the catalyst of Pd 4 /UiO-66-NH 2 demonstrated good stability and reusability, where no significant activity loss was shown even after five consecutive cycles. Therefore, this study provides new insights for efficient upgrading biochemical. Download: Download high-res image (188KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hao Guo,Likun Luan,Jinde Cai,Xiuling Ji,Haijun Yu,Yuhong Huang
CO 2 activation and conversion by enzymes to produce value-added multi-carbon compounds under mild conditions show significant impact on carbon neutrality. However, the enzyme co-factor NADH is expensive and the regeneration is still challenging for the enzyme reaction process. Inspired by natural photosynthesis, this study successfully developed a biomimetic photocatalyst Ce/TCPP-UiO-66-NH 2 (TCPP: meso-tetrakis (4-carboxyphenyl) porphine) for NADH regeneration and CO 2 activation. Structure analysis and spectra showed that the co-doping of Ce and TCPP reduced the band gap width of UiO-66-NH 2 , improved the separation efficiency of photo-generated carriers, and endowed it with excellent photocatalytic performance. The synthesized biomimetic photocatalyst Ce/TCPP-UiO-66-NH 2 was then applied for NADH regeneration. The regeneration efficiency of NADH can reach up to 95 % after 3 h of light reaction, which was about 1.6 times higher than that of the control group. Ultra-fast femtosecond time-resolved transient absorption (fs-TA) showed that Ce/TCPP-UiO-66-NH 2 possessed the shortest average decay time ( τ ¯ = 1.12 ps), indicating shorter average life-time of carriers after Ce doping, thus suppressing hole-electron recombination. Finally, the key enzyme formate dehydrogenase (FDHPa) for CO 2 activation was immobilized on the membrane, combining with light regeneration of NADH for CO 2 production to formate. The formate yield (3.1 mM) was 16 times higher than that of the control group (0.19 mM). This work provided an effective strategy and efficient photocatalyst for the biomimetic photocatalytic activation of CO 2 to formate, which is an indispensable bridge for the further high-valuable C n compounds production by biocatalysis.
✓ 已验证
产品关联
DOI
高影响因子
Processes
·
2023
·Vol. 12
·期 1
·64
·
IF 3.5
Zehui Zhao,Guangmin Ren,Xiangchao Meng,Zizhen Li
In order to achieve efficient photocatalytic N2reduction activity for ammonia synthesis, a photochemical strategy was used in this work. UiO-66 was prepared through the solvothermal method and further loaded with Au nanoparticles (Au NPs) onto the UiO-66 (Zr) framework. The experimental results verified that there were metal–support interactions between Au NPs and UiO-66; this could facilitate charge transfer among Au NPs and UiO-66, which was beneficial to enhance the photocatalytic activity. The best N2fixation effect of Au/UiO-66 with a loading of 1.5 wt% was tested, with a photocatalytic yield of ammonia of 66.28 μmol g−1h−1while maintaining good stability. The present work provides a novel approach to enhancing photocatalytic N2fixation activity by loading NPs onto UiO-66.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Yongtong Lei,Jinglong Zhao,Haiming Song,Fanhang Yang,Luli Shen,Lijing Zhu,Zhixiang Zeng,Xiaocheng Li,Gang Wang
UiO-66-based metal-organic framework (MOF) materials are a class of porous crystalline materials consisting of Zr metal clusters compounded with organic ligands of terephthalic acid group. In this study, functionalized UiO-66-X ( X =H , NH 2 , (COOH) 2 ) nanoparticles were synthesized. The morphology of UiO-66-X nanoparticles were characterized by SEM, while the crystal structure was analyzed using XRD and TGA . Chemical composition of UiO-66-X nanoparticles were analyzed through TFIR and XPS . The adsorption capacities of UiO-66-X nanoparticles for anionic dye of Congo red (CR), and cationic dyes of methylene blue (MB) and rhodamine B (Rh B) dyes were evaluated. Furthermore, the adsorption mechanisms of UiO-66-X nanoparticles for dyes were analyzed and summarized. Results showed that the adsorption capacities of UiO-66 and UiO-66-NH 2 on CR were 93.05 mg/g and 94.20 mg/g, respectively. In particular, the adsorption capacities of UiO-66-(COOH) 2 on MB and Rh B were significantly increased with the adsorption capacities of 80.66 mg/g and 72.64 mg/g, respectively. Due to the strong π-π effect and hydrogen bonding interactions between UiO-66 and CR dyes. UiO-66-NH 2 has stronger hydrophilicity and has electrostatic interactions , Lewis acid-base interactions and hydrogen bonds with CR. The abundant -COOH groups and higher negative Zeta potential (-23.43 mV) in UiO-66-(COOH) 2 led to strong electrostatic interactions and Lewis acid-base interactions with the cationic dyes MB and Rh B. Therefore, the adsorption performance of UiO-66-(COOH) 2 on cationic dyes was improved.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Shuting Zhuang,Rong Cheng,Jianlong Wang
UiO-66 type metal organic frameworks (MOFs), including UiO-66 and UiO-66-NH 2 , were synthesized, characterized, and applied for the adsorptive removal of diclofenac (DCF) from aqueous solutions. The effect of synthetic conditions (e.g., different linkers and activation temperatures) and adsorptive conditions (e.g., contact time, initial concentration, temperature, and pH) on DCF removal was examined. UiO-66-NH 2 showed a higher adsorption capacity than UiO-66, and the increase of activation temperature can improve the adsorption capacity of UiO-66-NH 2 towards DCF. The adsorption of DCF by UiO-66-NH 2 was endothermic and almost not affected by pH in the range of 4.8–7.7. The adsorption of DCF onto UiO-66 type MOFs conformed to the pseud second-order kinetic model and the Langmuir isothermal model, with adsorption capacity of 357 mg g −1 for UiO-66 and 555 mg g −1 for UiO-66-NH 2 . Electrostatic interaction and H-bonding possibly played a vital role for DCF adsorption. The as-prepared UiO-66 type MOFs were efficient adsorbent for DCF removal from aqueous solution.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）