Journal of Saudi Chemical Society
·
2026
·Vol. 30
·期 2
·19
·
IF 5.2
Zhang Qiuyun,Wu Hanhong,Chen Lianlian,Chen Liangfu,Fan Li,Deng Taoli,Ma Juan,Zhang Yutao
Metal–organic frameworks (MOFs) are recognized as a pivotal role in catalysis. Through control of MOFs synthesis conditions (e.g., time, temperature, ligand content, and agent type), offering the potential for improving catalytic performance and broadening application prospects of porous MOF-based composites. Based on this rationale, a series of HPW@UiO-67 catalysts with different organic ligand concentrations was fabricated via a simple one-pot hydrothermal method and evaluated for esterification activity. Characterization techniques such as FTIR, XRD, N 2 physisorption, SEM, EDX, TG, NH 3 -TPD, Py-FTIR, and XPS were systematically analyzed to determine the physicochemical properties of the synthesized composite catalysts. These analyses confirmed that the concentration of H 2 bpdc ligands significantly influenced the porous characteristics, surface morphology, and catalytic performance of the composites. Among the catalysts tested, the HPW@UiO-67–1 catalyst with the addition of 2 molar quality of H 2 bpdc exhibited superior activity in the production of biodiesel from oleic acid (OA) esterification than that of other synthesized catalysts, achieving a 93.9% conversion, which was primarily attributed to their mesopore surface area (465.8 m 2 /g), available multi-scale pore morphology structure, high acidity capacity (0.95 mmol/g), and abundant Brønsted and Lewis acidic sites. The optimal catalyst of HPW@UiO-67–1 exhibited good stability, and the cyclic experiments showed that the composite catalyst retained over 80% of its activity after four consecutive times. This work validated the synthesis strategic design of porous MOF-based hybrid materials for sustainable and efficient biofuels production. Graphical
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Suyu Xu,Liulu Liu,Fuwen Lei,Gexin Liu,Liang Xiao,Yafeng Zhang,Guangli Li
A sensitive voltammetric platform for determination of pefloxacin. • UiO-67/MWCNT-COOH exhibited significant synergistic effect toward pefloxacin. • Wide linear range (0.01–10 μM), low LOD (5.0 nM) and good stability (30 days). • High sensitivity in the detection of pefloxacin in lake water and honey. Developing a simple and efficient detection method for pefloxacin (PEF) is crucial for environmental monitoring and food safety assurance. In this study, we designed a novel electrochemical sensor for PEF detection by integrating zirconium-based metal-organic frameworks (UiO-67 MOFs) with carboxylated multi-walled carbon nanotubes (MWCNT-COOH) through a two-step hydrothermal and ultrasonic-assisted strategy. The coordination of the carboxyl groups of MWCNT-COOH with the unsaturated metal sites on the zirconium clusters of UiO-67, and the strong electrostatic attraction between PEF and the negatively charged composite surface, as well as strong π-π stacking interactions between the aromatic ring of PEF and the benzene rings of the organic ligands in UiO-67 and the graphite surface of MWCNT-COOH, collectively contribute to the efficient accumulation and sensitive detection of PEF. The sensor demonstrated a wide linear range (0.01–10 μM), an ultralow detection limit (0.005 μM), and outstanding overall sensing performance. When applied to real-world samples, including lake water and honey, the method achieved satisfactory recovery (94.48% − 108.9% and 100.9% to 106.4%, respectively), confirming its practical applicability for monitoring PEF in environmental and food matrices. A sensitive electrochemical sensing platform was developed for the detection of trace pefloxacin residues in lake water and honey by integrating zirconium-based metal-organic frameworks (UiO-67 MOFs) with carboxylated multi-walled carbon nanotubes (MWCNTs-COOH). Download: Download high-res image (126KB) Download: Download full-size image
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JOURNAL OF CATALYSIS
·
2020
·
IF 7.888
Yanyan Gong,Ye Yuan,Cheng Chen,Somboon Chaemchuen,Francis Verpoort
Facile strategies for noble metal dispersion in the shell-layer of core–shell structured metal–organic frameworks based on Zr-MOFs (UiO-66@Pd-UiO-67-BPY) was developed. The robust structure of the core-structure UiO-66 was firstly synthesized before covering up with a shell-structure of UiO-67-BPY obtaining the core–shell structure (UiO-66@UiO-67-BPY). The metallation with active palladium species (Pd II ) was designed on the shell-layer of core–shell MOFs via a post-synthetic method. The Pd species were coordinated explicitly in a bidentate manner to the bipyridyl linkers of the shell-structure (UiO-67-BPY). Excellent dispersion of Pd in the shell structure was obtained, resulting in UiO-66@Pd-UiO-67-BPY, as confirmed from characterizations. Taking advantage of the designed catalyst, the synthesized UiO-66@Pd-UiO-67-BPY was examined for the catalytic hydrogenation reaction. The results revealed an excellent catalytic performance of UiO-66@Pd-UiO-67-BPY compared with the traditional catalyst Pd-UiO-67-BPY. Moreover, the designed catalyst structure exhibited outstanding performance and paved the way towards a cost-effective catalyst synthesis based on MOFs combined with a noble metal.
研究领域:
材料科学
·
催化化学
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Ping Tan,Xuechun Jiang,Liye Liang,Yubo Zhang
Amino-density regulation was used to tune the electronic structure of UiO-67. • Diamino ligands induced electron redistribution between Zr nodes and linkers. • UiO-67-2NH 2 showed improved charge separation and interfacial transfer. • NO oxidation was enhanced while NO 2 formation remained at a low level. • Surface NO x intermediates were further converted into nitrate-related species. Functional group engineering of metal-organic frameworks provides a feasible route to tune their electronic structures, yet the specific role of amino ligands in regulating photocatalytic NO oxidation over Zr-based MOFs remains insufficiently clarified. Herein, UiO-67 derivatives with different amino densities were constructed through ligand engineering to investigate the relationship between ligand-induced electronic redistribution and visible-light-driven NO removal. Compared with pristine UiO-67, amino-functionalized UiO-67 exhibited enhanced visible-light absorption, improved charge separation, and reduced interfacial charge-transfer resistance. XPS and band-structure analyses suggest that the introduction of amino groups induces electron redistribution from Zr-oxo nodes toward ligand-related states, resulting in increased electron density near the valence band edge and more favorable photocarrier behavior. Among the prepared samples, UiO-67-2NH 2 showed the highest NO removal efficiency and maintained a relatively low NO 2 release during photocatalytic oxidation. ESR results confirmed the generation of •O 2 − and •OH under visible-light irradiation, while in-situ DRIFTS revealed the formation and evolution of NO + , NO 2 − , and nitrate-related intermediates. These results indicate that photogenerated carriers and reactive oxygen species jointly participate in the stepwise oxidation of NO toward more stable nitrate species. This work provides experimental evidence that amino ligand engineering can remotely modulate the electronic structure of UiO-67 and offers a useful strategy for improving the activity and selectivity of MOF-based photocatalysts for NO removal. Download: Download high-res image (177KB) Download: Download full-size image
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ChemistrySelect
·
2023
·Vol. 8
·期 43
·e202302665
·
IF 2.1
Muhammad Umair Ahmad,Guoying Zhao,Shahid Hussain
Graphical An efficient trifloalumiate supported MOF(UIO-67) catalyst was synthesized to promote the butyl levulinate formation from α-angelica lactone under mild reaction, resulting in remarkable conversion and selectivity. The catalyst was easily separated and could be recycled five times without significant activity loss. Herein, levulinate acid esters (LAEs) were efficiently synthesized from the α-angelica lactone (α-AL) esterification with trifloaluminate ionic liquids supported UIO-67 MOF as Lewis acidic catalyst. A series of UIO-67 catalysts with varied trifloaluminate ionic liquids loading were prepared via the post-modification method and exhibited excellent catalytic activity for α-AL esterification. Remarkable α-AL conversion (100 %) and LAEs selectivity (>99 %) were achieved by UIO-67 catalysts (0.2 mol %) with 12.4 %, trifloaluminate ionic liquids loading (UIO-67-TFA) at 70 °C and 90 min. The UIO-67-TFA catalyst can be reused at least 5 cycles without significant loss of catalytic activity. The UIO-67-TFA catalysts were fully characterized by XRD, SEM, XPS, TGA, IR, N 2 physisorption, etc. The results indicated that the well-distributed active trifloaluminate Lewis acid catalytic sites, high BET surface area, and good thermal stability could contribute to its excellent catalytic activity.
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MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 8
·1-8
·
IF 5.833
Hu Cong Yi,Jiang Zhong Wei,Huang Cheng Zhi,Li Yuan Fang
Based on the laccase-mimicking activity of Cu 2+ -modified University of Oslo (UiO) metal–organic framework (UiO-67-Cu 2+ ), we developed a colorimetric sensor array for distinguishing a series of phenols with different number and position of substituted hydroxyl group (-OH) and different substituent group on the benzene ring, including phenol, catechol, quinol, resorcinol, pyrogallol, phloroglucinol, o -chlorophenol, o -aminophenol, and o -nitrophenol. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of phenolic compounds were obtained by theoretical calculation. The results show that the lower the LUMO energy level, the easier the chromogenic reaction occurs. The UiO-67-Cu 2+ -catalyzed phenol chromogenic reaction showed a good linearity in the range from 0.1 to 200 μM with limit of detection approximately 61 nM. Through the detection of phenol in tap water and river water, the recovery rate and RSD ( n = 3) were calculated as 94.1~103% and 1.0~3.3, respectively, showing good recovery, reliable results, and outstanding stability. Therefore, the proposed colorimetric sensor array will have a great potential for the detection of phenols in the environment. Graphical abstract
Schematic presentation of a simple and sensitive colorimetric strategy based on the laccase-mimicking activity of Cu 2+ -modified UiO-type metal–organic framework (MOFs, Uio-67-Cu 2+ ) to distinguish phenols with analogous structures.
研究领域:
分析化学
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环境科学
·
材料科学
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高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Xiaoqing Li,Gui Wang,Dongyang Zhou,Ziwei Lan,Fengling Jiang,Dickon H. L. Ng,Jia Li
Herein, we report a novel UiO-67-Co(bpy)0.35 micromotor synthesized by a facile postsynthesis metalation via introducing cobalt salts ligated with 2,2′-bipyridine-5,5′dicarboxylic acid into UiO-67-bpy0.35 framework. The Co2+ active sites can decompose H2O2 to generate bubbles to power UiO-67-Co(bpy)0.35. Meanwhile, the UiO-67-Co(bpy)0.35 micromotor exhibits robust peroxidase-like activity through catalyzing H2O2 to generate •OH under neutral conditions. Based on this, a sensing platform was constructed for the colorimetric detection of GSH. Due to the synergy of self-driven motion and excellent peroxide-like activity, UiO-67-Co(bpy)0.35 micromotor can sensitively detect GSH with a low analytic limitation as 0.13 μM for GSH detection. This study provides a new sight of using the postsynthesis metalation method to prepare Zr(Co)-MOF micromotor for highly selective, sensitive, and facile detection of GSH.
研究领域:
材料科学
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生物医学工程
·
分析化学
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Ping Tan,Niling Zou,Jiakang Sun,Liangjun Long,Yuhan Li,Jiayuan Yu
Zirconium-based Metal-Organic Frameworks (Zr-MOFs) have attracted significant attention for phosphate removal due to their large specific surface area and abundant active sites. In this study, amino-modified Zr-MOFs were synthesized and used for phosphate removal, with a focus on investigating the relationship between the physicochemical structure of the amino-modified Zr-MOFs and phosphate adsorption, as well as the role of the amino groups. A series of amino-modified Zr-MOFs (UiO-67) were synthesized and characterized, with particular emphasis on the variant with one amino group functionalization on a defect-rich framework, designated as DUN. The results reveal that amino modification of defective UiO-67 (DUN) increases the number of phosphate adsorption sites per unit mass and specific surface area, thereby enhancing phosphate adsorption capacity, which is significantly higher than that of other synthesized UiO-67 variants. The role of amino group not only enhances the affinity for phosphate and the adsorption efficiency at low phosphate concentrations but also accelerates the phosphate adsorption rate. Through comprehensive characterization and DFT simulations, the superior performance of DUN is primarily attributed to the synergistic effects of its structural defects, carboxyl groups, and introduced amino functionalities. The defects at Zr nodes in DUN contribute significantly to phosphate adsorption by providing Zr-OH groups and oxygen vacancies. Concurrently, the carboxyl groups present in the DUN's ligand linkers engage in hydrogen bonding interactions with phosphate. The amino groups, a novel addition to the DUN structure, not only provide additional adsorption sites but also significantly enhance the strength of the existing hydrogen bonds and the Zr-O-P coordination interactions. This study sheds light on the intricate relationship between the physicochemical structure of Zr-MOFs and their phosphate adsorption capacity, providing a theoretical basis and practical approach for developing efficient Zr-MOF-based adsorbents for water purification.
研究领域:
环境科学
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材料科学
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ACS Applied Energy Materials
·
2026
·
IF 5.5
Wang Jiaxuan,Zhang Tongtong,Kawi Sibudjing,Li Yinhui
The development of high-energy-density lithium-metal batteries (LMBs) has imposed increasingly stringent requirements on the thermal stability, ionic conductivity, and interfacial compatibility of separators. To address the inherent drawbacks of conventional polypropylene (PP) separators, such as inadequate thermal stability and poor electrolyte wettability, a polyimide (PI) separator was fabricated via the nonsolvent induced phase separation (NIPS) method in this work. Furthermore, by introducing metal-organic framework (MOF) materials (UiO-67) into PI slurry, a PI/UiO-67 composite separator was successfully constructed, which achieves the synergistic optimization of the pore structure, surface morphology, and mechanical properties of the separator. The results demonstrate that the PI/UiO-67 composite separator retains the excellent thermal stability of the PI matrix, with no thermal shrinkage observed at 200 ° C, while simultaneously exhibiting significantly improved electrode–electrolyte interfacial compatibility. Compared with the commercial PP separator (bulk resistance 2.97 Ω, interfacial impedance 165 Ω), the composite separator possesses a lower bulk resistance (2.28 Ω) and interfacial impedance(122 Ω). Additionally, integrating UiO-67 considerably improves the wettability of the electrolyte and the lithium-ion transference number (0.61) in the separator, which in turn markedly boosts the electrochemical stability and the long-cycle performance of LMBs. LMBs utilizing the PI/UiO-67 separator achieve a notable capacity retention of 87.4% after 150 cycles at a rate of 0.5 C. In tests conducted with lithium symmetric cells, stable cycling performance is observed for more than 600 h at a current density of 0.2 mA cm –2 . This study offers a valuable composite approach and theoretical insights for advancing the development of separators that ensure high safety and performance in LMBs.
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ANALYTICA CHIMICA ACTA
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2020
·
IF 5.977
Muxin Lu,Yajuan Deng,Yuanchang Li,Tianbao Li,Juan Xu,Shu-Wei Chen,Jinyi Wang
The detection of blood glucose level receives much attention, because diabetes has become one of the significant threats to human health worldwide. In this paper, we described a novel core-shell MOF@MOF composite-based electrochemical sensor for nonenzymatic glucose sensing in alkaline media. The core-shell UiO-67@Ni-MOF composites were synthesized by internal extended growth of shell Ni-MOF on the core UiO-67 under polyvinylpyrrolidone (PVP) regulation. In the sensor system, UiO-67 with large specific surface area and good conductivity was used to accelerate the rate of electron transfer of UiO-67@Ni-MOF. Ni-MOF served as an electrocatalytic material due to excellent electrochemical activity toward glucose oxidation . The morphology, structure, and electrochemical performance of UiO-67@Ni-MOF composites were characterized. To demonstrate the detection performance of the UiO-67@Ni-MOF composite-based sensor, it was successfully used for nonenzymatic glucose sensing. The results indicated that UiO-67@Ni-MOF composites exhibited high electrocatalytic activity toward glucose oxidation compared with individual UiO-67 and Ni-MOF. Moreover, the sensor possessed high sensitivity and selectivity for real-time amperometric detection of glucose. It performed glucose level detection in human serum samples with acceptable reliability and accuracy. The present work suggested that the as-fabricated sensor is promising for nonenzymatic glucose sensing in real samples and holds great potential as an alternative tool for the rapid diagnosis of diabetes and for monitoring blood glucose levels daily.
研究领域:
生物医学工程
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材料科学
·
分析化学
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 13
·6274-6282
·
IF 3.925
Xiu Xing,Yan Liu,Ming-Liang Shi,Kun Li,Xin-Yue Fan,Zhong-Liu Wu,Na Wang,Xiao-Qi Yu
Controllable and mild photoenzymatic production of chiral alcohols was realized by coupling a versatile photochemical NAD(P)H regeneration system with (R)- or (S)-selective ketoreductases. The efficiency of NAD(P)H regeneration was improved using a Rhodium functionalized metal organic framework, namely Rh-UiO-67, to adjust and control electron transport and electron utilization. Furthermore, six different ketoreductases could be successfully immobilized on Rh-UiO-67 and combined with the light-driven NAD(P)H regeneration system to produce chiral aryl alcohols. Various chiral alcohols with complementary (R)- and (S)-conformations can be constructed by this method with high yields (97%) and excellent stereoselectivity (>99% ee).
研究领域:
化学
·
生物化学
·
催化
·
有机合成
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高影响因子
Nanoscale
·
2026
·
IF 5.2
Bolong Qi,Rui Li,Haoran Jiang,Sheng Ye,Woon Yong Sohn,Zhenhua Pan
ZnIn2S4 (ZIS) is a promising visible-light photocatalyst, yet its activity and stability are severely limited by rapid charge recombination and photocorrosion. Here we report a UiO-67-mediated solid-state Z-scheme strategy to simultaneously enhance the efficiency and durability of ZIS for photocatalytic hydrogen evolution. By integrating UiO-67 with ZIS and Pt nanoparticles, an intimate heterointerface with pronounced interfacial charge redistribution is established, featuring spontaneous electron transfer from UiO-67 to ZIS. As a result, the UiO-67/ZIS/Pt composite delivers a hydrogen evolution rate 15.69 times higher than pristine ZIS, together with an apparent quantum yield of 5.94% at 380 nm and excellent cycling stability. Mechanistic studies reveal that UiO-67 functions as an interfacial charge-regulation platform that promotes Z-scheme electron flow while suppressing charge recombination. This work provides a rational approach for overcoming the intrinsic limitations of metal sulfide photocatalysts via MOF-mediated Z-scheme engineering.
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