MOLECULES
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2023
·Vol. 28
·期 12
·4604
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IF 4.6
Li Zhang,Mengting Zhang,Pingping Yang,Yin Zhang,Junjie Fei,Yixi Xie
Rutin, as a biological flavonoid glycoside, has very important medicinal value. The accurate and rapid detection of rutin is of great significance. Herein, an ultrasensitive electrochemical rutin sensor based on β-cyclodextrin metal–organic framework/reduced graphene oxide (β-CD-Ni-MOF-74/rGO) was constructed. The obtained β-CD-Ni-MOF-74 was characterized by X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and nitrogen adsorption and desorption. The β-CD-Ni-MOF-74/rGO presented good electrochemical properties benefiting from the large specific surface area and good adsorption enrichment effect of β-CD-Ni-MOF-74 and the good conductivity of rGO. Under optimal conditions for the detection of rutin, the β-CD-Ni-MOF-74/rGO/GCE showed a wider linear range (0.06–1.0 μM) and lower detection limit (LOD, 0.68 nM, (S/N = 3)). Furthermore, the sensor shows good accuracy and stability for the detection of rutin in actual samples.Keywords:electroanalysis;carbon materials;electrochemical reduction;modified electrode
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INORGANIC CHEMISTRY COMMUNICATIONS
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2023
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IF 3.8
Qiulin Li,Xiang Li,Ke Zhang,Jiaqi He,Yongbing Lou,Jinxi Chen
There is an urgent need to design effective and affordable noble metal-free oxygen evolution electrocatalysts for the realization of hydrogen production technology through overall water splitting. In this work, we synthesized CoMoO 4 /Fe-MOF composite catalysts on nickel foam by solvothermal method and explored them as electrodes towards oxygen evolution reaction. At 10 mA cm −2 , CoMoO 4 /Fe-MOF demonstrated a small overpotential of 238 mV, with a relatively small Tafel slope of 49.22 mV dec -1 and exhibited excellent stability after 30 h of testing. The enhanced OER activity and good durability of CoMoO 4 /Fe-MOF could be attributed to the self-supported growth of Fe-MOF nanosheets as well as the tight binding to the rod-like CoMoO 4 . The coupling of CoMoO 4 with Fe-MOF established a rich boundary, thus improving conductivity, increasing specific surface area and exposing more active sites. These results suggested that the combination of MOFs with binary transition metal oxides provided an effective route to develop robust and efficient electrocatalysts.
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MICROCHEMICAL JOURNAL
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2023
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IF 4.8
Ben Niu,Zhenyu Zhai,Shuyan Yu,Tong Li,Jiaona Wang,Yan Zhou,Congju Li
A copper-based metal–organic framework (MOF-199) demonstrates excellent performance and considerable potential in the gas detection of volatile organic compounds (VOCs). However, the powder of MOF-199 seriously limits its application in the fabrication of flexible devices. Herein, we introduce a simple method of blending electrospinning, combining MOF-199 with polyacrylonitrile (PAN) nanofiber to form a MOF-199/PAN nanofiber membrane with the flexibility of PAN nanofiber and the functionality of MOF-199. The capacitive sensor comprising MOF-199/PAN nanofiber membrane and carbon nanotubes exhibits good flexibility, high porosity, and sufficient adsorption active sites. The sensor has the highest response to methanol among seven target VOCs. It exhibits outstanding sensitivity, long-term stability, good linear response, and repeatability toward methanol (250–1250 ppm). Owing to the flexibility of the MOF-199/PAN nanofiber membrane, the sensor maintains a stable sensing response after repeated bending at 180˚–0˚ 50 times and exhibits a certain degree of response in the 180˚ bending state. The results show that the sensor has flexibility potential. These provides some ideas and reference for the development of VOCs sensors.
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JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Yantao Wan,Wei Zhang,Xiaolin Han,Lei Zhou,Huajun Zhen,Chengzi Wu,Qi Yu,Guangli Xiu
A novel B,N-decorated carbocatalyst (Fe@BPC-XBN) for peroxymonosulfate (PMS) activation was prepared by a simple pyrolysis method using the iron-based metal organic frameworks (Fe-MOF), boric acid and boron nitride (BN) as precursors. Fe@BPC-20BN removed 93.3% of bisphenol A (BPA) in 90 min compared to 64.9%, 82.1% and 83.5% with Fe@PC, Fe@BPC and Fe@PC-20BN, respectively, with 0.15 g/L catalyst and 1 mM PMS at initial pH of 7. The solo B-doping with boron acid on the Fe-MOF derived porous carbon enhanced its catalytic capacity; moreover, B, N co-doping with BN and boron acid as precursors further promoted the catalytic performance. The addition of BN not only provided more B, N catalytic centers but also improved the stability of the carbocatalyst. In addition, hydroxyl radicals , sulfate radicals, superoxide radicals, and singlet oxygen species were involved in the degradation of BPA. Fe species, –BCO 2 /–BC 2 O, pyridinic N, and pyrrolic N groups on the carbon matrix played the important roles in the BPA degradation. The outstanding catalytic performance of Fe@BPC-20BN could be attributed to the synergistic effects between iron nanoparticles and the B/N codoped carbon matrix. This study gives new insights into the design and preparation of high-efficient B,N-decorated carbocatalysts for environmental remediation.
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Molecular Catalysis
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2021
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IF 5.062
Yu-Yang Zhang,Mei-Li Zhou,Yan-Sai Bao,Ming Yang,Yong-He Cui,Da-Liang Liu,Qiong Wu,Lin Liu,Zheng-Bo Han
Metal-organic frameworks (MOFs) encapsuled metal nanoparticles (NPs) have great potential in catalysis, while their synergistic catalysis in the one-pot reaction is still a largely untapped area, and reports are very limited. Herein, Pd NPs were loaded on a zeolite-type MOF (MIL-101(Cr)-NH 2 ) via post-synthetic impregnation approach to form composites Pd@MIL-101(Cr)-NH 2 . In addition, the obtained dual-functional Pd@MIL-101(Cr)-NH 2 showed great catalytic performance (>99% yields) in the one-pot Sonogashira-Knoevenagel and Heck-Knoevenagel reactions. Furthermore, all characterization methods showed that catalyst with Pd-Brønsted base had high stability to avoid metal agglomeration, leaching, and still maintained high activity after 6 cycles under the same circumstances. These reactions had potential significance for the production of benzylmalononitrile derivatives with high economic benefits.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2021
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IF 4.464
Jingyu Xu,Yangyang Xie,Jingqiang Zheng,Congyin Liu,Yanqing Lai,Zhian Zhang
Sodium (Na) metal anode has been considered as the promising candidate for next generation high-energy-density rechargeable batteries such as Na-S, Na-O 2 and Na-CO 2 , owing to its high specific capacity, low electrode potential and low cost. Unfortunately, some intractable problems hinder the practical application, including volume change and dendrite formation induced by inhomogeneous Na nucleation. Herein, 3D carbon cloth (CC) supporting Bi-MOF derived carbon nanosheets containing Bi nanoparticles and carbon shells (CC@Bi@C) were prepared to serve as Na deposition/dissolution hosts, integrating high surface area and favorable sodiophilicity. Due to the existence of Bi sodiophilic sites, Na nucleation and deposition can be induced, rendering uniform and dendrite-free morphology. Moreover, the 3D carbon framework can effectively reduce the current density and uniform distribution of Na + flux, solving the uncontrolled Na dendrite growth. As a result, the CC@Bi@C||Na half cell operating at 1 mA cm −2 for 1 mA h cm −2 exhibits 99.85% Coulombic efficiency for nearly 500 cycles. The symmetric cell maintains stable cycle for more than 300 h at 2 mA cm −2 for 2 mA h cm −2 with low overpotential. When paired a full cell with Na 3 V 2 (PO 4 ) 3 cathode, CC@Bi@C anode exhibits a stable capacity of 103.4 mA h g −1 at 1C (1 C = 117 mA h g −1 ) over 150 cycles for 95.5% capacity retention with high CE of 99.0%. This work provides a facile strategy to inhibit dendrite growth and uniform Na deposition.
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JOURNAL OF MEMBRANE SCIENCE
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2021
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IF 8.742
Zimo Wang,Jiamo Ren,Yuxuan Sun,Li Wang,Yong Fan,Jifu Zheng,Huidong Qian,Shenghai Li,Jianing Xu,Suobo Zhang
The dispersion and compatibility of metal–organic frameworks (MOFs) in polymeric matrices significantly influence the properties of composite membranes . However, the modification and functionalization of the node structures of MOFs to improve their dispersion in the polymeric matrix have been rarely studied. In this work, the node structures of UiO-66-NH 2 frameworks were modified by the introduction of F species, and abundant Zr–F bonds and pore blocking effects were generated, which significantly affected the comprehensive performances of the composite membranes, including the dispersion, mechanical properties , proton conductivities, swelling ratios, and water uptake. Due to the good dispersion of the fluorinated MOF nanoparticles in the Nafion matrix, the composite membranes had high proton/methanol selectivity and low methanol permeability, which exhibited superior fuel cell performances in DMFCs (24.9–26.8 mW cm −2 ) to that of recast Nafion (20.4 mW cm −2 ). Notably, this was the first time that the node structures of MOF-based nanoparticles were fluorinated to improve their dispersion in a polymeric matrix, providing a simple strategy for developing high-performance composite membranes.
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PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Xiaojing Sun,Hang Li,Liujie Qi,Fei Wang,Yachen Hou,Jingan Li,Shaokang Guan
In recent years, functional molecules such as metal-organic frameworks (MOFs), hyaluronic acid (HA) and heparin have been widely studied in the field of surface modification of cardiovascular and cerebrovascular implant materials . However, magnesium (Mg) alloy scaffolds, which are used as implanted materials, have difficulties such as poor cell compatibility, insufficient endothelialization, and remodeling of the blood–brain barrier. In this study, MOF-Cu formed after chelating organic ligand catechol (HPT) and Cu(II) was coated by Sulfonated hyaluronic acid (S-HA) on the surface of ZE21B Mg alloy to form a composite coating , which not only inherited the excellent anticoagulant and anti-inflammatory properties of S-HA, but also significantly improved the bio-compatibility of the coating by reasonably regulating the concentration of Nitric oxide (NO) catalytic release, promoted the proliferation, migration and expression of specific factors in endothelial cells (ECs), regulated the transformation of smooth muscle cells (SMCs) to contractile phenotypes. And it has important and remarkable performance in promoting the transformation of macrophage (MA) into anti-inflammatory M2 phenotype. These results provide important research strategies for Mg alloy vascular stents materials in remodeling blood–brain barrier, relaxing cerebrovascular vessels, inhibiting inflammatory responses, and maintaining cardiovascular and cerebrovascular elasticity.
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JOURNAL OF MOLECULAR STRUCTURE
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2023
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IF 3.8
Muhammad Ishfaq,Safyan Akram Khan,Muhammad Altaf Nazir,Shahid Ali,Muhammad Younas,Muhammad Mansha,Syed Shoaib Ahmad Shah,Muhammad Arshad,Aziz ur Rehman
Zirconium-fumaric based metal organic framework (MOF-801) was synthesised by ultra-sonication method. After synthesis, powder X-ray diffraction (PXRD), UV/Vis spectrophotometer and Fourier transform infrared (FT-IR), were used for its functional group identification. For its structural morphology and elemental composition scanning electron microscopic (SEM) and energy dispersive scanning (EDS) analysis was carried out. After typical characterization, photocatalytic degradation of Rhodamine B (Rh-B) was examined under sunlight by using Zr-fumaric MOF-801 as photocatalyst and revealed the satisfactory results. The MnO 2 @MOF-801 and MnO 2 @MOF-801/Chitosan composite were also synthesized with same ultrasonication method. It was concluded from this study that MnO 2 @MOF-801/Chitosan composite has the good photocatalytic activity about 95 % against the Rhodamine B (Rh-B) in contrast with Zr-fumaric MOF-801 (71 %) and MnO 2 @MOF-801 (86 %) after 45 min of reaction. Valence band (VB) gap and conduction band (CB) corresponding to light-induced transition are used to suggest catalytic mechanism. This newly synthesized non-reported MnO 2 @MOF-801/Chitosan composite as a good photocatalyst initiate the new way for the development of others non-reported MOF coated biopolymer with enhanced photocatalyst activity as an environmental remediation for the control of water pollution.
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ACS Applied Materials & Interfaces
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2023
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IF 9.5
Boting Pan,Jian Wang,Chenling Yao,Shangtao Zhang,Rong Wu,Huan Zeng,Di Wang,Caiqin Wu
As an emerging metal–organic framework (MOF) material in recent years, the MOF-303 membrane has shown great potential applications in seawater desalination, dehydration, and atmospheric water harvesting. Herein, we report on a dense and uniform MOF-303 membrane fabricated by a facile in situ hydrothermal synthesis approach in the presence of an anodized aluminum oxide (AAO) channel membrane acting as the only Al source and substrate. Interestingly, the MOF-303 isomer can be obtained due to an insufficient amount of organic ligand caused by the less hydrophilic and larger pore size of the AAO substrate. The MOF-based composite membranes possessed surface-charge-governed ionic transport behavior. Moreover, the MOF-303/AAO membrane yielded an output power density of 1.87 W/m2 under a 50-fold KCl concentration gradient. Under a 50-fold gradient of artificial seawater and river water, a maximum power density of 1.46 W/m2 can be obtained. After 30 days of stability testing, the composite membrane still maintained the power output, and the power density was higher than 1.20 W/m2. This work provides a facile and effective strategy for constructing Al-based MOF composite membranes and boosts their applications in harvesting salinity-gradient energy.
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COLLOIDS AND SURFACES B-BIOINTERFACES
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2026
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IF 5.9
Nanke Ma,Anqi Wei,Huiling Peng,Lixia Xie,Yuan Jin,Guangli Li
Cu-MOF-derived Cu/Cu 2 O-embedded carbon integrated with MWCNTs-COOH. • Synergistic hetero-interface with Cu⁺ Lewis acid sites and conductive network. • Sensitive L -DOPA detection with 0.007 μM LOD and broad linear range. • Effective anti-interference against uric acid in biological matrices. • Validated applicability in human serum and urine samples (94.8–105.2%). Reliable monitoring of levodopa ( L -DOPA) is clinically crucial for optimizing Parkinson’s disease therapy and minimizing side effects. Herein, a sensitive electrochemical sensor was constructed using a composite of Cu-MOF-derived Cu/Cu 2 O-embedded carbon integrated with carboxylated multi-walled carbon nanotubes (C-Cu-MOF/MWCNTs-COOH). The key innovation of this work lies in designing a synergistic hetero-interface where carbonization yields Cu and Cu 2 O species within a carbon framework, while the incorporated MWCNTs-COOH establish a conductive network that facilitates electron transfer. The enhanced electrochemical response arises from the synergistic interaction between the mixed-valence copper species and the carbon framework. Specifically, Cu + serves as Lewis acid sites for L -DOPA enrichment while the carbon scaffold together with Cu 0 promotes interfacial electron transfer. Kinetic analysis reveals an adsorption-controlled process involving two-electron and two-proton transfer. Under optimized conditions, the sensor delivers a broad linear response (0.01–15 μM) with a low detection limit of 0.007 μM, alongside satisfactory repeatability, reproducibility, and long-term stability (94.3% retention after 21 days). Notably, uric acid (UA), a major coexisting interferent in physiological fluids with overlapping oxidation potential, is well resolved from L -DOPA at the modified electrode, causing negligible interference in coexistent measurements. Practical applicability is further validated by recoveries of 94.8–105.2% in human serum and urine samples. These results demonstrate that C-Cu-MOF/MWCNTs-COOH is a highly effective sensing platform for L -DOPA, combining excellent sensitivity, selectivity, and practical utility for clinical monitoring.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Siqi Wei,Renjie Li,Wenxi Wang,Dan Huang,Xiandeng Hou,Li Wu
A novel ML-assisted SERS platform was developed for meat freshness evaluation. • Core-shell GNU/p-MBA@MIL-101 substrate enabled sensitive and stable SERS sensing. • Embedded p-MBA served as an internal standard and selectively reacted with VAs. • NH 3 , MA, PUT and CAD were quantified with ppb-level detection limits. • CNN analysis achieved 98.5% accuracy for meat freshness classification. Accurate and rapid evaluation of meat freshness remains challenging due to the complexity of spoilage markers and environmental interferences. Herein, a novel machine learning (ML)-assisted SERS platform was developed based on a core-shell GNU/p-MBA@MIL-101 substrate. Gold nanourchins (GNU) modified with p-mercaptobenzoic acid (p-MBA) were coated with MIL-101(Fe), enabling efficient gas capture and Raman signal enhancement. The embedded p-MBA was used as an internal standard (IS) and selectively reacted with volatile amines (VAs), to enable SERS detection with high sensitivity, reproducibility and anti-interference performance. Typical spoilage markers (NH 3 , MA, PUT and CAD) were quantitatively detected with limits of detection down to the ppb level. Convolutional neural networks (CNNs) were trained on SERS spectra collected from meat samples stored under different conditions, achieving a classification accuracy of 98.5%. This ML-assisted SERS strategy provides a reliable and accurate assessment of meat freshness, demonstrating strong potential for intelligent monitoring in food safety and quality control. Download: Download high-res image (119KB) Download: Download full-size image
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