MICROCHIMICA ACTA
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2026
·Vol. 193
·期 10
·650
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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
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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
·
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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Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Song He,Junqing Zhu,Jiayi Tang,Jinfeng Ji,Yajun Huang,Ye Li
Metal-organic frameworks (MOFs) have become a focal point of interest owing to their ability to remove contaminants from wastewater. However, the typical powder form of MOFs is difficult to recover after use, which hinders their practical application. In this research, UiO-66-OH gel was synthesized at room temperature. On this basis, Co was doped into UiO-66-OH gel to obtain a series of Co@U-OH-X composites. The [email protected] exhibited an adsorption capacity for TC that was 5.1 times higher compared to the UiO-66-OH gel. Furthermore, the influence of pH, coexisting ions, humic acid, and original concentration of TC on the adsorption of [email protected] was examined. The composite materials demonstrated an exceptional capacity to adsorb TC (182.31 mg·g -1 ), which surpassed the performance of numerous previously documented adsorbents. The pseudo-second-order kinetic model and the Freundlich isotherm model efficiently accounted for the adsorptive interaction. Thermodynamic adsorption analyses indicated that the interaction occurred spontaneously and accompanied by heat absorption. After four cycles, there was only a 12.7% reduction in the removal rate of TC, which suggested that the composite materials were recyclable. [email protected] showed remarkable adsorption capacity even in settings with minimal TC concentration. The exceptional adsorptive performance, superior recyclability and aqueous stability established Co@U-OH-X composites as a viable adsorbent contender for eliminating TC.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Ming Cao,Fan Xiao,Zijian Yang,Yingbo Chen,Ligang Lin
Oil-containing emulsion pollution seriously endangers the ecological environment and human health, and it is urgent to solve the problem of oil-containing emulsion pollution. In membrane separation technology, metal organic frameworks (MOFs) are being widely used to enhance the wettability of the membrane surface and separation efficiency. Here, electrospinning technics and the outstanding wetting properties of MOF are combined to improve the separation performance of oil-containing emulsions. PVP chains were successfully grafted on Zr-O clusters of UiO-66-NH 2 to prepare PVP-UiO-66-NH 2 nanoparticles, which were then loaded on the PAN nanofiber substrate with microspheres/fine fibers prepared by a continuous electrospinning-electrospray process. The result shows that the PAN nanofiber substrate loaded with 0.5 wt% PVP-UiO-66-NH 2 has the best separation efficiency and stable anti-fouling ability for different kinds of oil-in-water surfactant stabilized emulsions (TOC = 11.6 mg/L, R = 99.2% FRR = 94.4% for n-hexane-water emulsion). Therefore, the constructed nanofiber membrane is the favorable candidate for the efficient separation of oil-containing emulsions.
研究领域:
环境科学技术
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材料科学
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膜分离技术
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纳米技术
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Xiaocan Zhang,Yiran Liu,Mengxin Wang,Haiyan Liu,Yuting Mu,Yumeng Fo
Water has an important effect on proton conductance process in proton exchange membranes (PEMs). To enlarge the pore size and construct a more efficient water channel, UiO-66 with controllable structural defects were innovatively proposed to blend with SPEEK. Linker defects expose acidic sites, thereby adjusting the hydrophilicity and facilitating the formation of an effective hydrogen bonding network. As a result, S/deU-2 exhibited the highest conductivity under experimental conditions, which was 54.5% higher than that of SPEEK and 31.3% of non-defective UiO-66 filled PEMs. NMR T 2 spectra reviewed that free water, which had the greatest impact on conductivity, accounted for the largest proportion in S/deU-2. In consideration of potential structural weakening due to defect introduction, defect-repair and bioinspired structure optimization strategies were further proposed to balance conductivity and long-term stability.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Peng Jiang,Yang Ding,Ke Lyu,Xiao-Yu Yang,Lv-Ye Ai,Bin Luo,Wenhui Jing,Zhongli Wu,Zuoxin Hu
A UiO-66/porous carbon heterojunction was constructed to achieve synergistic photothermal catalysis for dye degradation. • The mechanism of photothermally enhanced interfacial electron transfer was elucidated by combining in-situ characterization and simulations. • The composite exhibited high removal efficiencies for MO and RhB (93% and 88%, respectively) along with excellent cycling stability. • The non-phytotoxic degradation products confirm the ecological safety and practical application potential of this system. A UiO‑66/porous carbon composite was developed as a photothermal catalytic system for the efficient degradation of recalcitrant organic pollutants methyl orange (MO) and rhodamine B (RhB) in aqueous environments. UiO‑66 offers a high specific surface area and abundant active sites, while porous carbon provides broad‑spectrum light absorption and efficient photothermal conversion. Irradiated with simulated sunlight, the composite removed 93% of MO and 88% of RhB, with apparent rate constants markedly exceeding those of the individual components. The mechanism of hot electron transfer at the interface between UiO-66 and porous carbon driven by photothermal effects has been revealed through in-situ XPS analysis and FDTD electromagnetic field simulations. Porous carbon, as the dominant photothermal component, generates localized heating to enhance reaction kinetics and facilitates charge separation and migration in UiO-66 through interfacial hot-electron transfer, thereby synergistically promoting the formation of reactive oxygen species (·OH and ·O 2 ⁻). Additionally, hydroponic experiments with mung beans confirmed the non‑phytotoxicity of the degradation products, underscoring the ecological safety of the system. This work provides design and mechanistic insights for the development of efficient, stable, and environmentally sustainable solar‑driven materials for wastewater remediation. Download: Download high-res image (189KB) Download: Download full-size image
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
·
IF 6.76
Yachun Ren,Yueyang Xu,Erjian Huang,Peng Zhang,Yongping Zeng
Adsorption desulfurization is a very effective method to remove thiophenic compounds from fuels. The metal–organic frameworks (MOFs) have emerged as a new type of desulfurization adsorbents because of their porous nature and large specific surface area. In this study, Cu 2+ was covalently introduced into the UiO-66 framework at the defective sites by the solvothermal method. Further, the π-complexation adsorbent UiO-66-Cu(I) containing Cu + for adsorption desulfurization was synthesized by the methanol vapor-induced reduction. The adsorption performance was tested for the removal of thiophene from the model fuels with different sulfur concentrations. In comparison with the pristine UiO-66, the adsorbent UiO-66-Cu(I) has a higher adsorption capacity for thiophene, reaching 14.8 mg S/g. The competitive adsorption results indicated that UiO-66-Cu(I) has good selectivity for thiophene in the presence of aromatic compounds. From the recycling experiments, this adsorption still has the 86 % of the initial capacity after four cycles, indicating that the adsorbent has a good recycling performance.
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Nano Energy
·
2023
·
IF 17.6
Penghao Zhu,Zaka Ullah,Surong Zheng,Zairui Yang,Shiwei Yu,Shoupu Zhu,Liwei Liu,Aihua He,Cunguo Wang,Qi Li
Metals are the basic and key components of most of the stuff present all around us in our living environment. The corrosion of these metals is a natural phenomenon which can be avoided through application of electrochemical cathodic protection . The triboelectric nanogenerator (TENG) is used to convert the environmental energy into electric energy. Unfortunately, the current output of TENG is always lower which limits its applications in protection of metal corrosion. In this work, we report the fabrication of efficient TENG based on UIO-66, UIO-66-NO 2 and UIO-66-NH 2 , and use it as a power supply to construct a self-powered anticorrosion system for cathodic protection on carbon steel . The introduction of nitrate (-NO 2 ) and amine (-NH 2 ) groups change the Fermi level of the material, allowing the TENG to transfer more electrons during the contact. It is observed that the performance of TENG based on UIO materials is fruitful, with a maximum short-circuit current as 50.0 μA and a maximum power as 122.5 μW·cm −2 . In addition, dipping experiments and electrochemical measurements showed that the TENG is capable to offer notable cathodic protection to carbon steel. The demonstrated work introduces an efficient and cost-effective strategy for scavenging the mechanical energy from environment by employing the self-powered setup to effectually protect the metals from corrosion. The assembly of auspicious self-powered cathodic protection setup based on TENG offers a great potential for versatile applications in protection of metallic corrosion activities.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
·
IF 4.598
Qingyuan Song,Xueling Shan,Liyin Bu,Anna Dai,Ding Jiang,Wenchang Wang,Hiroshi Shiigi,Zhidong Chen
A highly efficient electrochemiluminescence resonance energy transfer (ECL-RET) aptasensor was constructed for ultrasensitive detection of diethylstilbestrol (DES). The composite composed of silver orthophosphate and zirconium-based metal–organic frameworks (Ag 3 PO 4 -UiO-66) was prepared as a sensing platform for aptasensor incubation. Ag 3 PO 4 , a novel ECL donor, whose emission could be obviously enhanced through loading on UiO-66. Particularly, the composite of Ag 3 PO 4 -UiO-66 could minimize the aggregation of Ag 3 PO 4 , which provided a novel possibility for the construction of high ECL efficiency sensors. UiO-66 presented ultrahigh surface area to improve the loading capacity of Ag 3 PO 4 and DES-specific aptamer. Notably, Ag 3 PO 4 with superb catalytic properties could immobilize DES aptamer via Ag–NH 2 bond and further ensured the distance between the ECL donor and the energy receptor. To design a novel ECL-RET system, GO nanosheets were synthesized as a suitable ECL acceptor which could be fixed through electrostatic adsorption. Owing to the superior spectral overlap, GO could significantly quench the ECL emission of Ag 3 PO 4 . Under the optimal conditions, the constructed ECL-RET aptasensor showed a satisfactory response to DES in a linear range of 1.0 × 10 −14 ∼ 1.0 × 10 −8 M and the detection limit was 7.2 × 10 −15 M (S/N = 3). This paper not only developed a novel approach for environmental water quality monitoring but also offered more opportunities for building highly sensitive ECL-RET aptasensors.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Zhimin Guo,Nan Li,Shixiang Zuo,Chenghong Qiang,Wei Zhan,Zhengping Li,Jiangquan Ma
Piezoelectric materials, which could collect and convert mechanical energy into electrical energy, have recently emerged as promising catalysts for pollutants removal sustainably. Unfortunately, it remains a challenge to enhance the intrinsic piezoelectric property of piezoelectric materials. Herein, for the first time, the polar molecule adenine was introduced as a linking agent in the synthesis process of Zr-based UiO-66 (denoted as AD-U) to enhance the structure asymmetry and piezoelectric properties of UiO-66. The piezoresponse force microscopy (PFM) and ferroelectric hysteresis loop demonstrated that AD-U catalyst exhibited significantly enhanced piezoelectric potential than UiO-66. Furthermore, a series of electrochemical characterization evidenced that AD-U displayed higher charge separation efficiency than UiO-66. As expect, the optimized AD-U shown promoted diclofenac sodium (DCF) piezoelectric degradation efficiency by harvesting stirring energy compared with pure UiO-66. The electron paramagnetic resonance (EPR) spectra and trapping agent experiments convinced that h + play the major role for destroying the DCF molecules. Moreover, three possible degradation pathways of DCF were put forward by DFT and liquid chromatography mass system (LC-MS). Our work offers a new pathway to enhance piezoelectric property of MOFs and extend the application of MOFs in the field of piezocatalysis.
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