RENEWABLE ENERGY
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2025
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IF 9.1
Fenglong Chen,Lingxin Meng,Jingmei Xu,Hongqi Liang,Kuirong Feng,Tian Lan,Jiayin Wang,Qingyuan Shi
The sulfonated poly(arylene ether ketone sulfone)s which contains fluorenyl groups (F-SPAEKS) as proton exchange membranes (PEMs) matrix is prepared. UiO-66-NH 2 -PO 4 H 2 (PUIN) is synthesized based on UiO-66-NH 2 as a template for immobilizing phosphate groups onto MOFs by chemical bonding via Schiff base reaction. UiO-66-SO 3 H-PO 4 H 2 (SPUIN) is prepared via ring-opening of 1,3-propanesulfonolactone, where -SO 3 H is introduced at the -NH 2 site of PUIN. The hybridized PEMs (FSSPU-X) are obtained by adding SPUIN as fillers into F-SPAEKS polymers. From all prepared PEMs, FSSPU-7 which means the weight ratio of SPUIN is 7% shows the best performances in comprehensive aspects. The H + conductivity of FSSPU-7 is enhanced to 247.38 mS cm -1 and the peak power density is 1140 mW cm -2 with 0.48 mg cm -2 Pt/C loading. At the same time, the swelling ratio of FSSPU-7 remains below 17%. Besides, FSSPU-7 has a maximum tensile strength up to 32.37 MPa. And the proton conductivity of FSSPU-7 is consistently maintained at about 240 mS cm -1 after 144 hours of long-term stability test. Therefore, the preparation of PEMs with a high level of performance is expected by introducing phosphoric acid and sulfonic acid bi-functionalized UiO-66 into F-SPAEKS.
研究领域:
材料科学
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化学工程
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
·
IF 4.6
Yifan Yao,Zuyao Fu,Xiaojun Hu,Jing Xie,Zhaoyang Ding
As dairy consumption increases, antibiotic residues in milk pose a serious threat to public health. Developing simple, rapid, and highly sensitive detection technologies is crucial for ensuring food safety. In this study, a novel fluorescent sensor, Tb/UiO-66, was synthesized by coordinating terephthalic acid ligands with terbium and zirconium ions (Tb 3 + /Zr 4+ ). This sensor enables ratiometric fluorescent detection of tetracycline (TC), exhibiting characteristic emission peaks at 394 nm, 490 nm, and 594 nm. TC quenches the emission of UiO-66 at 394 nm via the inner filter effect (IFE) and quenches the fluorescence at 490 nm through coordination with Tb 3+ . The sensor, based on the F 394 /F 490 ratio, achieves a linear range of 10–90 μg/mL and a detection limit of (LOD)0.097 μg/mL (3σ). In real milk samples, recovery rates ranged from 95.87 % to 102.44 %, with a relative standard deviation below 2.88 %. This fluorescent sensor features a simple design, rapid response, and high sensitivity, establishing a reliable platform for assessing antibiotic contamination in food safety.
研究领域:
食品安全
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分析化学
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传感器与生物传感器
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环境监测
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纳米材料
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xinyu Zhi,Jingjing Wang,Huayi Cai,Danyi Yang,Jinbo Jia,Tianliang Wang,Chengchun Tang,Yi Fang
Photocatalysis can directly convert solar energy into chemical energy, has shown unique advantages in solving environmental and energy problems. In this paper, novel UiO-66/p-BN (UBN) heterojunction photocatalysts were successfully prepared by a simple solvothermal method. UBN-6 achieved a degradation efficiency of up to 93.8 % for 30 mg/L tetracycline under 180 min of visible light irradiation, which was 2.46 and 3.25 times higher than that of pure UiO-66 and p-BN, respectively. The enhancement of UBN photocatalytic activity stemmed from the incorporation of p-BN, which increased the specific surface area to expose more active sites, broadened the visible light absorption range, and promoted the separation of photogenerated carriers through the formation of heterojunctions. Free radical trapping experiments showed that ·O 2 - , ·OH and h + played important roles in the photocatalytic degradation of tetracycline pollutants. In addition, the photocatalytic mechanism of UBN was revealed by analyzing the degradation intermediates of TC by LC-MS. This work provides an effective strategy for designing visible light responsive photocatalysts to degrade pollutants.
研究领域:
材料科学
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环境催化
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光催化
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污染物降解
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纳米复合材料
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NANO
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2026
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IF 1.3
Congcong Bai,Hongying Hou,Wenting Mao,Runjie Wu
Poor conductivity of UiO-66 severely limited the electrochemical performances in the supercapacitors, which were alleviated and improved by combining with polypyrrole (PPy) with high conductivity and pseudocapacitive properties. Herein, a series of UiO-66@x%PPy ( x = 5 , 1 0 , 2 0 , 3 0 ) composites were prepared by solvothermal reaction followed by in-situ polymerization of pyrrole(PPy); furthermore, the influence of PPy’s loading on the structural properties was also systematically investigated. Desirably, the obtained composites maintained the “rigid-flexible” core-shell octahedral structure. Furthermore, the UiO-66@20%PPy composite exhibited the highest electrochemical performances with the specific capacitance of 204.1 F/g in a three-electrode system and 118.18 F/g in a two-electrode system at 1 A/g. Furthermore, the asymmetric two-electrode supercapacitor exhibited a high capacitance retention of 88.25% after 2000 cycles at 2 A/g. The synergistic effect between the continuous three-dimensional (3D) conductive network of PPy phase and the double-layer capacitance of porous UiO-66 framework may be responsible for the desirable results. Seemingly, an effective interfacial strategy was indeed beneficial for developing a high-performance UiO-66-based supercapacitor.
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MICROPOROUS AND MESOPOROUS MATERIALS
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2017
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IF 3.615
Linlin Wan,Chen Zhou,Kai Xu,Bo Feng,Aisheng Huang
Compact and phase-pure UiO-66-NH 2 membranes were synthesized on the 3-aminopropy-ltriethoxysilane (APTES) modified macroporous Al 2 O 3 tubes through a repeated synthesis strategy. APTES acts as a molecular linker for anchoring the metal ions onto the support surface to promote the nucleation and the crystallization of UiO-66-NH 2 membrane. Therefore, well-intergrown UiO-66-NH 2 membranes could be prepared through a repeated synthesis method on the APTES-modified macroporous Al 2 O 3 tubes. The developed UiO-66-NH 2 membranes were evaluated for seawater desalination by pervaporation . It is found that the UiO-66-NH 2 membranes show high desalination performances attributing to the narrow pore size which is exactly in between the size of water molecules and hydrated ions . With increasing the feed temperature from 318 to 363 K, the water fluxes increase from 1.5 to 12.1 kg m −2 h −1 , with ions rejections of above 99.7%. Further, the UiO-66-NH 2 membranes display high stability for a long time in seawater desalination, which is very promising for seawater desalination.
研究领域:
材料科学
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膜技术
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脱盐
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环境工程
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纳米技术
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ANALYTICAL CHEMISTRY
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2026
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IF 7.3
Yong Li,Dongping Fang,Chao Yang,Xike Tian,Yulun Nie,Jianbo Shi
The detection of per- and polyfluoroalkyl substances (PFASs) in the environment is critical due to their adverse health effects, but it remains challenging because of the high cost and technical complexity of standard analytical methods. We developed a series of rare earth-based bimetallic metal–organic frameworks (MOFs) for the sensitive and efficient fluorescence detection of perfluorooctanoic acid (PFOA). By systematically modulating the ligand functional groups with amino (−NH2), hydroxyl (−OH), and fluorine (–F) moieties, the influence of ligand electronegativity on the PFOA recognition performance was evaluated. The experimental results demonstrated that the local electrostatic potential of the MOFs, governed by the functional groups, is a critical factor in determining the PFOA binding affinity and fluorescence sensitivity. Eu/UiO-66-NH2 demonstrated the highest sensitivity and selectivity for rapid fluorescence detection of PFOA, which was due to its strong positive electrostatic potential to facilitate binding via electrostatic attraction and synergistic hydrogen bonding. PFOA concentrations in actual water samples can also be determined by Eu/UiO-66-NH2. These findings provide theoretical insights and experimental support for the functional design of MOF-based sensors, paving the way for the sensitive and selective detection of PFASs.
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高影响因子
TURKISH JOURNAL OF CHEMISTRY
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2026
·Vol. 50
·期 3
·285-299
·
IF 2
LI JUANHONG,WANG SUQIN,LIU XIN,LIU FENG
A [H]-accelerated catalytic Fenton system was developed using Pd/UiO-66(Zr)-F4 as the catalyst. This system enabled the regeneration of Fe²⁺ and facilitated the continuous generation of both ·OH and 1O2 through [H]-mediated electron transfer at ambient temperature and pressure. Under the conditions of 0.2 g L−1 catalyst (Pd loading 0.516 wt%), 25 μM Fe2+, 60 mL min−1 H2 flow (as the [H] source), 20 mM H2O2, and pH 3, approximately 89% of carbamazepine (initial concentration 20 mg L−1) was degraded within 3 h using trace iron. However, the catalytic activity of Pd/UiO-66(Zr)-F4 gradually declined from 89% to 53% over six reaction cycles. This decrease was likely due to loss of specific surface area caused by microstructural degradation associated with hydrogen spillover effects.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Qianwen Wang,Mengjie Li,Dandan Zhang,Mingmin Jia,Xiong-Fei Zhang,Jianfeng Yao
A mixed-matrix membrane was developed by combining defect-engineered UiO-66-NH 2 metal-organic framework (MOF) and nanocellulose. A formic acid-modulated solvothermal method creates linker-missing defects in UiO-66-NH 2 , increasing its specific surface area from 540 to 775 m 2 g −1 . The hydroxyl/carboxyl-rich cellulose forms a robust hydrogen-bonding network with amino groups and defect sites on the MOF, suppressing interfacial defects. The optimized membrane achieves a CO 2 permeability of 303.7 Barrer with CO 2 /N 2 and CO 2 /CH 4 selectivities of 92.3 and 124.0, respectively. This enhancement arises from optimized adsorption sites in the defective MOF and superb MOF-cellulose interface capability coupled with efficient CO 2 transfer through the cellulose network. Moreover, the membrane exhibits good stability over 500 h tests, offering a promising approach to high-performance gas separation.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 10
·650
·
IF 5.4
Kang Yujiao,Guo Hao,Yang Zeyun,Deng Meng,Xin Yu,Ren Jia,Wang Mingyue,Yang Wu
As a third-generation fluoroquinolone antibiotic, levofloxacin (LEV) residue in biological and environmental samples has aroused widespread public concern. In this work, NH 2 -UiO-66 was in-situ synthesized via a solvothermal route on MoO 3 surface. Subsequent covalent modification with ferrocene (Fc) afforded a ratiometric electrochemical sensor denoted as Fc-NH 2 -UiO-66/MoO 3 /GCE for LEV quantification. The anchored Fc units not only construct an internal self-calibration system with stable reference signal to greatly improve detection reliability, but also boost the electrical conductivity of the composite electrode. The as-fabricated sensor exhibits favorable analytical performance toward LEV, featuring a wide linear range of 0.6 µM-600 µM and a low limit of detection of 0.032 µM, together with stable anti-interference capability. Moreover, the developed electrode was successfully employed to determine LEV in practical specimens including serum, urine and commercial LEV eye drops. This reliable and sensitive analytical strategy exhibits promising prospects for clinical diagnosis and pharmaceutical analysis. Graphical abstract
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ACS Applied Nano Materials
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2026
·
IF 5.8
Yao Zhang,Hui Zhang,Ziyao Jia,Chunya Li,Lianqing Chen,Shiwei Jin
Surface-enhanced Raman scattering (SERS) holds significant potential for rapid food safety screening; however, its application is often constrained by substrate sensitivity, stability, and cost. Here, we developed a multifunctional SERS substrate by integrating a 3D-printed microstructured template with a slippery liquid-infused porous surface (SLIPS) and Ag/UiO-66 metal–organic framework (MOF) nanoparticles for food safety monitoring. The nearly pinning-free SLIPS interface enabled evaporation-driven enrichment of nanoparticles at microcone tips, generating dense, spatially confined hotspots with an enhancement factor (EF) of 1.44 × 108. The Ag/UiO-66@SLIPS substrate demonstrated ultrasensitive SERS detection of illicit sildenafil (SD) and food-dye additives (using rhodamine 6G as a model). The substrate achieved limits of detection (LOD) for SD of 100 pg/mL (2.11 × 10–10 M) in ethanol and 1 ng/mL (2.11 × 10–9 M) in health wine using only 10 μL samples. For rhodamine 6G (R6G), an ultralow LOD of 1 fg/mL (2.09 × 10–15 M) was obtained. Furthermore, for photocatalytically degradable dyes, the inherent catalytic activity of Ag/UiO-66 provided a self-cleaning pathway to mitigate signal carryover and enabled repeated measurements. The substrate maintained 83.5% signal intensity over 150 days and can be refreshed for continued use. This work combines biomimetic structures with functionalized nanomaterials, enabling the simple, cost-effective development of robust, uniform SERS substrates for multiscenario trace molecular sensing in food safety.
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NEW JOURNAL OF CHEMISTRY
·
2026
·Vol. 50
·期 13
·5530-5540
·
IF 2.6
Qianhao Zhao,Yaping Wang,Yongyuan Yang,Longhui Nie,Naixin Kang
A high adsorption capacity and excellent recyclability are the most critical factors for large-scale application of adsorbents. In this work, a regenerable Zn-UiO-66 was synthesized by doping Zn into UiO-66. The resulting adsorbent exhibited a high adsorption performance for TCH with a qmax of 178.9 mg g−1 at 30 °C and maintained stable adsorption performance across a broad pH range (3–11). The adsorption kinetics and thermodynamics of TCH, together with the zeta potential of the adsorbent under different pH conditions, further confirm the underlying adsorption mechanism, which is proceeded via monolayer chemisorption, primarily governed by π–π conjugation, π–cation interactions, coordination interactions and hydrogen bonding. The adsorbent also performed well in real water matrices. Importantly, Zn-UiO-66 exhibits good water stability and excellent recyclability, with only a slight decrease in adsorption capacity after five cycles using simple water rinsing, underscoring its strong potential for efficient antibiotic removal.
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GREEN CHEMISTRY
·
2025
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IF 9.2
Xiaoyang Sun,Linyu Nian,Huimin Qi,Mengjun Wang,Dechun Huang,Chongjiang Cao
Biomimetic mineralization is a crucial biotechnology for encapsulating enzymes within metal–organic frameworks (MOFs). While this technique is extensively employed in solvent-based systems, its applicability in mechanochemical systems remains to be explored. In addition, the structural units of MOF composition may significantly influence this process. In this study, we reported that dodecanuclear zirconium clusters act as precursors to facilitate the mechanochemical process of biomimetic mineralization, leading to the construction of cellulase@UiO-66-NH2 (with cellulase abbreviated as Cel). The results demonstrate that dodecanuclear zirconium clusters promote the biomimetic mineralization of Cel@UiO-66-NH2, preventing enzyme degradation by organic solvents. This approach leads to a 20% increase in enzyme activity per unit mass and a 78% improvement in the encapsulation rate. It also enhances catalytic efficiency and substrate affinity compared with Cel@UiO-66-NH2 synthesized with hexanuclear zirconium clusters. The biomimetic mineralization was attributed to the increased local concentration of structural units of MOFs surrounding Cel, as well as transformations in chemical bonding and alterations in enzyme structure. We demonstrated the stability of Cel@UiO-66-NH2 compared to traditional physical adsorption methods and explored its applications in the saccharification of carboxymethylcellulose and microcrystalline cellulose and the high-temperature sequential extraction of polysaccharides from Naematelia aurantialba. Our results revealed that Cel@UiO-66-NH2 retained over 50% of its catalytic activity after eight cycles of carboxymethylcellulose saccharification and maintained 50.9% enzyme activity after five cycles of treatment with microcrystalline cellulose. In addition, we achieved a polysaccharide extraction yield of 10.35% at 70 °C.
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