JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
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2017
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IF 2.603
Xiaolin Cao,Zejun Jiang,Shanshan Wang,Sihui Hong,Hui Li,Chao Zhang,Yong Shao,Yongxin She,Fen Jin,Maojun Jin,Jing Wang
UIO-66 crystals were explored for the first time to adsorb neonicotinoid insecticides in environmental water samples. HPLC coupled with tandem MS was used for quantification and determination of neonicotinoid insecticides. UiO-66 crystals was successfully synthesized by a simple constant-temperature bath method. Synthesized UiO-66 was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry and nitrogen adsorption porosimetry (NAP), which demonstrated a uniform particle size, a large Brunauer–Emmett–Teller (BET) surface area and high thermostability . The adsorbing results showed that UIO-66 crystals could be used as a promising adsorbents for rapid extraction of neonicotinoid insecticides and be reused at least 10 times. Under the optimized conditions, the limits of detection (LODs, S/N = 3) and limits of quantification (LOQs, S/N = 10) for the five insecticides were found to be 0.02–0.4 ng/mL and 0.05–1.0 ng/mL, respectively. This developed approach not only provided more simple and sensitive method, as well as possessing satisfactory recovery for neonicotinoid insecticides, but also for other traces in environmental samples.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Guowei Shan,Xiao Xiao,Hong Gao,Qi Zhang,Houyi Peng,Weixing Li
Heavy metal ion (HMI)-contaminated wastewater is a great threat to public health. Membrane separation is an efficient and green technology for HMI removal. Here, the strategy of nanoparticle in-situ growth combined with molecule grafting was proposed to fabricate the UiO-66-NH 2 -g-DTPA/PES composite membrane. The UiO-66-NH 2 nanoparticles bound within the PES membrane substrate uniformly brought a significant number of primary amino groups, providing abundant graft sites for DTPA molecule. Numerous carboxyl groups and tertiary amine groups were introduced as the result of DTPA grafting, enabling the formation of M−DTPA complexes with HMIs. The fabricated UiO-66-NH 2 -g-DTPA/PES membranes exhibited excellent performances. The pure water flux arrived at 6208 L·m −2 ·h −1 and the efficiencies of removing Cu 2+ , Pb 2+ , Cr 3+ and Cd 2+ were 99.73%, 99.79%, 96.91% and 98.33%, respectively. Moreover, the UiO-66-NH 2 -g-DTPA/PES membrane also showed a remarkable stability in pH conditions ranging from 3 to 10 and remained a relatively high performance in the cyclic test.
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INORGANIC CHEMISTRY
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2025
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IF 4.7
Keli Li,Mengli Li,Changsheng Su,Long Deng,Zheng Yan,Hongxia Shen,Yang Jiao,Xuebo Cao
Abundant porosity, sufficient active sites, and appropriate stability are crucial factors for metal–organic frameworks (MOFs) designed for photocatalysis. Herein, a controllable partial pyrolysis strategy was employed to synthesize hierarchically porous UiO-66-X (X denotes the mass ratio of H2BDC-NH2 in ligands) with adjustable coordinated unsaturated zirconium sites and interconnected mesoporous structure. By taking full advantage of linker instability in MOFs, which is usually viewed as an undesirable trait of MOFs, this controllable thermolysis involved heat treatment of the original UiO-66-X, leading to selective partial decomposition and permanent mesopores within the structure. Meanwhile, dangling functional amino groups could serve as anchoring sites for cocatalyst and CO2 molecules. Cu nanoclusters were successfully incorporated into hierarchically porous MOFs by a structure engineering approach, yielding a novel photocatalyst. A mutually active mechanism was put forward and illustrated in this work. Mechanistic investigation reveals that mesoporous structures in a catalyst not only offer three-dimensional (3D) interconnected gas transport channels but also provide sufficient space for accommodating the introduced Cu nanoclusters, which served as active sites and efficiently induced a CO2 photoreduction reaction. At the optimal ratio, the photocatalyst exhibited superior photocatalytic activity, achieving a CO yield of 121.64 μmol g–1 under 5 h of the stimulated solar irradiation without any photosensitizer.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Wen Yun,Wanshan Wang,Yiyan Lin,Ruiqi Wang,Xia Ha,Li Yang,Yue Jiang,Xin Zhang
A catalytic hairpin self-assembly (CHA) amplification method was developed for CAP detection based on cross-shaped DNA and UiO-66. MOF was used to quench the fluorescent signal of FAM labeled DNA. Cross-shaped DNA with four fluorophore group (FAM) was utilized to enhance the fluorescent intensity. CAP could open hairpin structure of H-apt and induce CHA reaction. The product of CHA hybridized with cross-shaped DNA, resulting its leaving from the surface of UiO-66 and recovery of fluorescent signal. The limit of detection (LOD) was low to 0.87 pM. This method had been successfully applied for the detection of CAP in actual samples. Importantly, the high sensitivity was attributed to the great amplification efficiency of CHA, strong fluorescent intensity of cross-shaped DNA structure and great fluorescent quenched efficiency of UiO-66.
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PubMed
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JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Yujuan Xie,Jinghua Han,Fengchao Li,Lingfei Li,Zhenghao Li,Qian Li,Zhaoting Shang,Wangting Lu,Yazhen Wang,Fan Yu,Wei Yan,Yun Zheng,Jiujun Zhang
Introducing advanced conductive nanoparticles to combine with metal-organic frameworks (MOFs) as electrode is emergingly regarded as a practical and efficient approach to improve the capacitive performance of supercapacitors. Herein, a new MOF (ZrNi-UiO-66, Nickel-zirconium 1,4-dicarboxybenzene) is designed to combine with carbon quantum dots (CQDs) to form a composite electrode with high specific capacitance, in which the charge regulation is performed to facilitate the electronic conduction and transfer. Such constructed electrode delivers an enhanced electronic conductivity and an improved specific capacitance of 2468.75 F g −1 @ 1 A g −1 , which is four times of the contrast sample. Meanwhile, the assembled hybrid supercapacitor exhibits an increased energy density and power density, as well as a sustainable stability after 10,000 cycles with a retention rate of 91.6 %. Basing on the study of advanced characterizations and density functional theory (DFT) simulation, the mechanism of significantly improved specific capacitance can be elaborated as the promote electronic conduction caused from narrowed band gap from 3.9 eV or 0.41 eV–0.23 eV, and the increased charge accumulation at the Ni sites in designed MOFs. This work provides new insights for the design and construction of potential energy storage materials based on MOFs and/or advanced carbon-based materials.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xingmao Zhang,Hang Wang,Qi Wang,Longyu Wang,Hongxiang Cui,Xiaopeng Sun,Jialong Ling,Dongmin Bian,Ziyi Zhang,Chuan-De Wu
Salinity gradient energy (SGE) harvesting from water has long been sought as a clean energy source. Commercial ion exchange membranes often face high energy barriers, inadequate ion transport ability, and chemical instability, thus displaying low power outputs. In this study, a series of continuous, flexible, zirconium-based metal–organic frameworks (Zr-MOFs) were synthesized on reduced graphene oxide membranes via electrochemical synthesis for highly efficient SGE harvesting are developed. The well-defined nanoscale channels and functional groups act as ionic filters and conductors, enhancing the ion selectivity for highly efficient SGE harvesting. Notably, the SO 3 H-UiO-66 membrane achieved a power density of 57.5 W/m −2 in neutral solution under a 1000-fold KCl concentration gradient, with a high K + transference number of 0.92, outperforming most reported membranes. Furthermore, the SO 3 H-UiO-66 membrane demonstrates a high output power density of 16.2 W/m −2 when tested with real seawater (Huang Hai) and domestic water, and is also effective in harvesting energy from wastewater, achieving a power density of 17.3 W/m −2 . This study opens new avenues for fabricating continuous Zr-MOF membranes as a platform for utilizing seawater and wastewater sources in SGE harvesting.
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JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Rui Cao,Xinxin Li,Teng Zhang,Hanxiao Tang,Ying Song,Zhijuan Zhang,Weisheng Feng
The development of metal ion detection probes with high sensitivity and selectivity is of utmost importance for the promotion of public health and environmental sustainability. In this work, a series of ratiometric fluorescent probes (RhB@UiO-67-NH 2 ) were successfully prepared using a one-pot method for the detection of metal ions, particularly As 5+ and Fe 3+ . Notably, the ratiometric fluorescent probe RhB@UiO-67-NH 2 (1:4) demonstrates dual functionality as a Fe 3+ turn-off probe and an As 5+ turn-on probe. The limits of detection (LODs) for As 5+ and Fe 3+ using RhB@UiO-67-NH 2 (1:4) were determined to be 0.521 μM (39.03 ppb) and 0.107 μM (5.97 ppb), respectively, which were the lowest records of reported LMOFs so far. The fluorescence quenching of Fe 3+ can be attributed to various mechanisms such as fluorescence resonance energy transfer (FRET), photoinduced electron transfer (PET), and competitive absorption (CA). Additionally, the fluorescence enhancement of As 5+ is primarily due to absorbance-caused enhancement (ACE) and PET. Moreover, the composite material RhB@UiO-67-NH 2 (1:4) exhibited excellent anti-interference capability and reproducibility for detecting Fe 3+ and As 5+ . The removal efficiency of As 5+ by RhB@UiO-67-NH 2 (1:4) exceeded 50.9 % when the initial concentration of As 5+ was below 20 mg/L. This work presents a valuable reference for future investigations and utilization of As 5+ and Fe 3+ sensing.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zhijian Xiao,Wenda Yang,Jing Wang,Shuang Cao,Jingling Yang,Mingshan Zhu
Photocatalysis is a promising technology for removing low concentrations of nitric oxide (NO) from the atmosphere. However, the unsatisfactory photocatalytic NO removal efficiency and the high selectivity for NO 2 in catalysts limit the development of this technology. In this work, we used an in-situ synthesis method to incorporate Cs 3 Bi 2 Br 9 into UiO-66 for efficient and robust photocatalytic NO removal. The Cs 3 Bi 2 Br 9 /UiO-66 catalyst exhibits a 77.6 % NO removal efficiency and low NO 2 selectivity under visible light irradiation at a WHSV of 1,650,000 mL h −1 g −1 , exceeding the efficiencies of Cs 3 Bi 2 Br 9 (36.4 %) and UiO-66 (2.3 %), as well as those of most reported MOF-based photocatalysts. The synergy of weak Lewis acid sites from Cs 3 Bi 2 Br 9 in Cs 3 Bi 2 Br 9 /UiO-66 and the strong Lewis acid sites from UiO-66 promotes the enrichment of NO on the catalyst surface and act as electron traps to induce carrier separation, thereby promoting the generation of O 2 − to achieve high efficiency. This work provides a new idea for the development of catalysts in NO elimination.
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BIOCHEMICAL ENGINEERING JOURNAL
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2025
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IF 3.8
Rui Zhao,Wenhui Yang,Pengyan Yang,Yunhan Cao,Fenghuan Wang
Carbonic anhydrase (CA) has been suggested as a biocatalyst for carbon dioxide capture since it could effectively catalyze the hydration of carbon dioxide. Metal-organic frameworks (MOFs) have attracted significant attention in the development of immobilized enzyme carriers due to their pore tunability and excellent stability. In this study, UiO-67 materials with varying defect degrees (DUiO-67) were prepared using the organic linker missing method to enhance the catalytic performance. The results indicated that both the defect degree and the pore size of DUiO-67 materials decreased with an increase in acetic acid equivalent. After CA immobilization, all DUiO-67 materials exhibited excellent thermal, pH and recycling stability. CA@DUiO-67–25 showed higher enzyme catalytic activity and conversion ability than the other materials. After 10 cycles, CA@DUiO-67–25 retained 57 % of its initial conversion capacity. The construction of defective MOFs provides a promising new strategy for CA immobilization to achieve the catalytic conversion of CO 2 .
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Hao-Jia Qin,Shuai Zhao,Hua-Ping Gong,Zhi Yu,Yufeng Wang,De Zhang,Pei Liang
Antibiotic residue detection plays a key role in ensuring human health. However, rapid, reliable, and highly sensitive detection methods are still insufficient. To tackle this challenge, in this study, the Au@Ag/Ce-UIO-66, a nanocomposite material consisting of bimetallic gold core and silver shell (Au@Ag) introduced on the surface of Ce-UIO-66, was successfully synthesized. By meticulously regulating the exact concentration and volume of silver nitrate, we successfully generated an optimal matrix. This significantly enhanced the detection capability of the probe molecule CV to an impressive concentration of 10 −9 M, with a remarkably low relative standard deviation of 7.54 %. The matrix exhibits excellent surface-enhanced Raman scattering (SERS) performance and stability, reaching adsorption equilibrium within 30 min. Moreover, employing this substrate enables the detection of sulfadiazine at concentrations as minimal as 2.5 μg/L, significantly surpassing the standards set by the European Union. Notably, the Raman spectral signal of sulfadiazine maintains stability across various pH conditions at a concentration of 10 −5 M. Finally, the adsorption mechanism and enhancement mechanism between Au@Ag/Ce-UIO-66 and sulfadiazine were explored.
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Surfaces and Interfaces
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2025
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IF 6.3
Fen Yang,Shuai Zhao,Biaobiao Ge,Jie Huang,Qianmin Dong,Qiang Chen,Shangzhong Jin,Pei Liang
We demonstrate a method for the detection of Ziram in water by using the adsorption properties of UiO-66(Ce) metal-organic framework (MOF) combined with the surface-enhanced Raman scattering (SERS) substrate of precious metal nanoparticles. The traditional UiO-66 is based on Zr as the metal center. After replacing the Zr metal center with Ce, the synthesized UiO-66(Ce) has short aging, high efficiency, low energy consumption, and energy saving. Furthermore, by adding P123, UiO-66 is modified to have a structure similar to the durian shell spine, which can provide more composite sites for metal nanoparticles. Thus, more SERS hot spots are generated. The combination of AuNPs with UiO-66(Ce) has been confirmed by XRD, XPS, and other characterization and analysis techniques. The Raman probe molecule R6G was used as an evaluation tool to evaluate the performance of this SERS substrate. The results showed that the relative standard deviation (RSD) of the substrate was as low as 8.96 % at a concentration of 10 –6 M of the R6G solution, and the substrate demonstrated high stability. Finally, the substrate was applied for the detection of ziram in lake water, achieving a detection concentration of 10 –8 M, an enhancement factor of 2.57 × 10 5 , and a detection limit as low as 5.21 × 10 –9 M, demonstrating excellent sensitivity and enabling efficient trace pollutant detection in complex water environments.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Huan Zhang,Cai-Yong Zhu,Wen-Qi Jin,Zi-Yu Li,Peng Li,Wei Gao,Ping Zhang,Xiu-Mei Zhang
The development of metal-organic framework (MOF)-based composite systems for visible-light-driven organic photocatalysis under mild conditions, offering an effective approach for sustainable and efficient chemical synthesis. Herein, we synthesized Z-scheme photocatalysts CdS/Ce-UiO-66 by combining the representative photocatalyst CdS and Ce-UiO-66, demonstrating excellent photocatalytic performance for imines synthesis in air. The CdS/Ce-UiO-66 composites demonstrated significantly enhanced photocatalytic activity for the oxidative coupling of amines under visible-light irradiation in air, outperforming their individual components. Remarkably, the composite achieved conversion of benzylamine with exclusive formation of imines as the sole product and efficiency up to 84 % at least four cycles. Furthermore, the photocatalytic system exhibited excellent substrate adaptability, demonstrating broad applicability across various amine substrates. The enhanced photocatalytic performance of CdS/Ce-UiO-66 composites can be primarily attributed to the uniform dispersion of CdS nanoparticles and the unique heterostructure system that effectively modulates the band gap, extends the light absorption range, and promotes charge carrier separation. This study not only presents an efficient photocatalytic strategy for the direct synthesis of imines through oxidative coupling of amines but also demonstrates the significant potential of photoactive CdS/MOF hybrid systems in sustainable chemical synthesis.
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