JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Yuxuan Ke,Shuzhen Chen,Suisui Su,Jiao Zhang,Shenghua Hu,Cuiqing Zhang,Changyuan Hu,Shizheng Zheng
Bi 2 O 3 has been recognized as a promising anode of aqueous secondary battery because of the high capacity, but the application is greatly hindered by the poor conductivity and limited actual capacity. Herein, for the first time, one dimensional (1D) α-Bi 2 O 3 nanobelt is fabricated via alkali etching strategy using rod-shaped Bi-MOF (CAU-17) as the self-sacrificial template. Specifically, high-crystalline and oxygen-deficient α-Bi 2 O 3 nanobelt with length and width of 6 μm and 300 nm are identified. The electrochemical results demonstrate the high specific capacity (247 mAh g −1 @1 A g −1 ) and acceptable stability of α-Bi 2 O 3 nanobelt. Such superior capacity is derived from the exposed electrochemical active sites, fast charge transfer and efficient ion diffusion in 1D high-crystalline and oxygen-vacancies enriched structure. The assembled Ni-Bi battery displays high capacity (78.3 mAh g −1 ) and high energy density of 100.2 Wh kg −1 (at power density of 2829.8 W kg −1 ). Our work provides rational guidance for architecting 1D high-capacitive electrodes for aqueous rechargeable alkaline battery.
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高影响因子
Food Chemistry-X
·
2024
·
IF 6.5
Xu Yiwei,Jia Xupeng,Yang Sennan,Cao Mengrui,He Baoshan,Ren Wenjie,Suo Zhiguang
An aptasensor with dual-outputs was developed for malathion detection. Fe-MOF was synthesized to design favorable signal probes for catalytic amplification. Owing to the excellent peroxidase-like activity of Fe-MOF, the redox reaction was catalyzed to produce the dual-outputs of colorimetric and electrochemical. In this sensing strategy, malathion was captured by the aptamer on sensing interface, leading to the release of signal probe. Thanks to the catalytic amplification of Fe-MOF and the high capture effect of aptamer, the aptasensor produced a sensitive response for malathion. Based on the dual-signals of absorbance and current, the detection method for malathion was developed ranging from 10 ng/mL to 500 ng/mL. The detection limit of malathion was 5.8 ng/mL for colorimetric output and 4.6 ng/mL for electrochemical output. Furthermore, the aptasensor exhibited high specificity and good repeatability in malathion detection. Finally, the aptasensor was applied to detect malathion in fruit and vegetable samples with satisfactory recovery.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
IF 4.7
Minghao Ma,Fubin Pei,Wei Hu,Wu Lei,Jiang Wang,Zhaoyang Tong,Bing Liu,Qingli Hao,Xihui Mu
Sensitive and rapid detection of transferrin (TrF) is useful in maintenance of human health. A ratiometric fluorescence imprinted sensor based on nitrogen co-doped carbon dots, red cadmium telluride quantum dots, and boronic acid-functionalized MOF (N-CDs/r-CdTe@MOF-B(OH) 2 @MIP, or NTZ@MIP) for the detection of TrF was constructed via the sol–gel process. Boric acid groups in the MOF-B(OH) 2 carrier improved covalent binding to TrF through affinity interactions. MOF-B(OH) 2 also provided a large specific surface area and porosity that increased the loading of quantum dots (QDs) and improved mass transfer efficiency and analytical sensitivity. N-CDs and r-CdTe acted as fluorophores that emitted at 448 nm and 642 nm, respectively, in the presence of TrF, which facilitated ratiometric fluorescence detection. Under optimized conditions, TrF could be detected in the range 0.05–15 µM, with a lower limit of detection of 0.025 µM. The NTZ@MIP sensor produced satisfactory results in the analysis of TrF-fortified samples of human urine and serum, with recoveries of 93.2 % and 99.6 %, respectively. A smartphone-based TrF sensing platform using NTZ@MIP was also designed and achieved satisfactory results, suggesting that this ratiometric fluorescence imprinted sensor has promising applications in on-site detection of TrF.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Die Gong,Wenli Zhu,Mingzhu Wu,Chao Chen,Xuedan Chen,Jiankang Ye,Maozheng He,Xin Zhao,Qingshan Fu
In wastewater remediation by adsorption, three-dimensional porous MOF (metal-organic frame)/polymer hybrid monoliths have been demonstrated to be promising absorbents with effective adsorption and recovery capacities. However, MOF/polymer monoliths often suffer from obvious decrease of porous structures due to large shrinkage during dry at room temperature, weakening the accessibility of active sites for adsorption. Here, a so-called pre-frozen crosslinking process is employed for fabrication of a chitosan/UiO-66 monolith, of which shrinkage is restrained markedly during drying in the air, and the shape of the monolith can be kept intact in 6.3 M acetic acid (CH 3 COOH), deionized water and 1 M sodium hydroxide (NaOH) for 60 days. Furthermore, the monolith achieves an adsorption capacity of 55.50 mg g −1 for methylchlorophenoxypropionic acid (MCPP) from its aqueous solution, increasing by 55.6% compared with UiO-66 particles, and the maximum adsorption capacity is 256.41 mg g −1 .
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Reaction Chemistry & Engineering
·
2024
·
IF 3.4
Zhiwei Liu,Jingjing Wang,Qian Liu,Liying Wang,Zhenzhu Cao,Yongfeng Zhang
Excess fluoride in drinking water can cause poisoning. To solve this problem, a porous metal–organic framework (MOF) was fabricated via the solvothermal approach and employed for the removal of fluoride ions from water. ZrAl-MOF was fabricated by self-assembly of polyvalent Zr4+, Al3+metal ions and 4,4-biphenyldicarboxylic acid (BPDC). The developed metal-based ZrAl-MOF was used to remove fluoride ions from water and could remove fluoride ions to a maximum of 109.2 mg g−1 (308 K). ZrAl-MOF has a special core–shell structure with a layer of small balls stacked outside and cobweb-like structure inside. The properties of the bimetallic MOF can be adjusted by Zr4+, Al3+ metal ions and BPDC to meet the demand for maximum adsorption performance. Bimetallic MOFs commonly have a substantial specific surface area, capable of providing numerous active sites and being favorable for the adsorption reaction of substances. The electronic properties of different metals may lead to stronger electrostatic attraction and enhanced adsorption of fluoride ions. The factors affecting the adsorption effect, such as solution pH, ZrAl-MOF dosage, reaction time, initial fluoride concentration, temperature, and coexisting anions, were optimized. The fluorine adsorption capacity of ZrAl-MOF was less affected by the adsorbent under acidic conditions and by the presence of sulphate and nitrate ions in the water. In addition, the experimental data were fitted with various adsorption kinetic and isotherm models. It is shown that fluorine adsorption is feasible and spontaneous. The fluorine adsorption mechanism of ZrAl-MOF is mainly electrostatic attraction and ion exchange.
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Qianshun Chen,Qiuyan He,Yiting Wang,Chen Huang,Yuyu Lin,Jieyang Wang,Wei Shen,Bin Qiu,Xunyu Xu
Carcinoembryonic antigen (CEA) is the most widely adopted biomarker for the early determination of various cancers, thus it is very important to design a simple and highly effective sensing method to detect CEA. Herein, by synthesizing Fe-MOF nanohybrid loaded with platinum nanoparticles (Pt NPs/Fe-MOF) nanozyme and selecting CEA aptamer (Apt) as the specific recognition element, a simple nanozyme-based voltammetric sensor was designed to detect CEA based on Apt-controlled the catalytic activity of Pt NPs/Fe-MOF nanozyme. The as-synthesized Pt NPs/Fe-MOF nanozyme could catalyze effectively 1,2-diaminobenzene oxidation to produce electroactive 2,3-diaminophenazinc (DAP) which can exhibit a strong reduction current. Nonetheless, when Pt NPs/Fe-MOF is covered fully by Apt of CEA, the peroxidase activity of the as-synthesized Pt NPs/Fe-MOF nanozyme is remarkably restricted and the peak current of DAP would disappear nearly. Interestingly, this catalytic activity could be recovered effectively in the presence of CEA owing to the specific identification of Apt toward CEA. Through optimizing several experimental factors, the as-designed nanozyme voltammetric sensor offers superior detective performance for CEA. In addition, the as-designed sensor possesses superior specificity and selectivity, reproducibility and stability as well as practical applications, showing great potentials for achieving simple, sensitive and highly effective determination of CEA.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Zhiheng Luo,Jianxiong Ma,Yan Wang,Yuhan Du,Yujie Liu,Wei Zhang,Yuxiao Lai,Xinlong Ma
The management of bone defects, particularly those with irregular geometries resulting from osteoporotic fractures, remains fraught with challenges. Microspheres have emerged as a promising vehicle for tissue engineering, distinguished by their controlled release, safety, and ease of application. Various bioactive components are integrated into microspheres to improve their performance. Metal-organic frameworks, formed from metal ions interconnected by organic ligands, are increasingly utilized in tissue engineering. Specifically, magnesium-based MOFs are notable for their broad applicability; Mg 2+ ions are instrumental in bone reconstruction and repair, facilitating osteogenesis, angiogenesis, antibacterial effects, and anti-inflammatory properties. Mg-MOF was synthesized using magnesium chloride and gallic acid, and it was incorporated into gelatin microspheres to create Gel@Mg-MOF composite microspheres. Leveraging gelatin's biocompatibility, controlled release, and biodegradability, the composites' biocompatibility was evaluated through toxicity and adhesion assays. Moreover, the osteogenic and angiogenic potentials of the Gel@Mg-MOF microspheres were assessed, alongside their capacity for ROS scavenging. Results suggest that controlled Mg 2+ release from Gel@Mg-MOF microspheres promotes osteogenic activity in RBMSCs and enhances angiogenic potential in HUVECs. Additionally, the gallic acid-containing composite microspheres exhibited antioxidative properties. Collectively, the findings suggest that Gel@Mg-MOF microspheres could provide effective support for bone defect repair, with potential for clinical deployment.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2024
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IF 8
Xiang Lu,Yuan Qu,Feiyu Zhang,Ziwen Ding,Haotian Zheng,Yuhua Lei,Song Liu,Siqi Li
Designing sensing materials with effective porous structure and compositions is a crucial strategy for constructing high-performance gas-sensitive devices. Herein, a dodecahedral mesoporous carbon derived from metal-organic frameworks (CMOF), e.g. Zeolitic Imidazolate Framework-8 (ZIF-8) derived porous carbon (ZIF-8-C) was prepared, and subsequently, three-dimensional (3D) hollow dodecahedral ZIF-derived carbon-polyaniline (PANI) based (ZCPx, x representing the mass fraction of ZIF-derived carbon) hierarchical hybrid materials were constructed by introducing protonated polyaniline on the surface of MOF carbon via in-situ oxidative polymerization. The MOF-derived structure provides a substantial interface surface area for the hybrid material, enabling rapid adsorption and charge transfer, along with essential structural stability. The 3D hollow ZCP50 hybrid material prepared exhibits a wide detection range (0.1–500 ppm), repeatability, acceptable long-term stability, and an 8.3 times response enhancement versus PANI. The above performance is attributed to the significant synergistic effect between ZIF-8-C and PANI. The unique design of this 3D framework holds promising potential for the commercial application of room-temperature gas sensors.
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Small
·
2024
·
IF 13
Can Yao,Rui Zhang,Zongliang Xie,Yundi Wu,Xilong Wu
Nanozymes mimicking enzymes show great promise in anti-tumor therapy but are often limited by their low catalytic activity and lack of tumor specificity in hostile tumor microenvironments. This study develops a novel nanozyme, D/P@ZUCO, utilizing metal–organic frameworks (MOFs) with glutathione oxidase, peroxidase, and catalase-like activities. D/P@ZUCO is synthesized using ZnFe 2 O 4 and NH 2 -UiO66 (Cu/Zr) through an in situ growth method, followed by loading with doxorubicin (DOX) and primaquine (PQ), and functionalization with oxidized hyaluronic acid (OHA). It efficiently catalyzes the conversion of hydrogen peroxide (H 2 O 2 ) into hydroxyl radicals (·OH) and glutathione (GSH) into glutathione disulfide (GSSH), initiating ferroptosis in cancer cells. Additionally, the conversion of excess H 2 O 2 into oxygen (O 2 ) enhances the apoptosis effects of DOX. Importantly, the inhibition of autophagy by D/P@ZUCO exacerbates ferroptosis and immunogenic cell death (ICD), triggering a potent anti-tumor immune response. The targeted drug delivery of D/P@ZUCO is facilitated by magnetic guidance and interactions between OHA and CD44 receptors. D/P@ZUCO demonstrates effective cancer treatment by triggering multiple cell death pathways through a synergistic combination of enzymatic actions, serving as a paradigm for systemic activation of multiple enzymes in triple-negative breast cancer therapy.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Peng-Fei Qiu,Xiu-Niang Tan,Zai-Yin Huang,Yan Zhou
The low conductivity of many traditional metal–organic-framework (MOF)-based electrode limits their developments in the field of electrochemical energy storage and still of great challenge. The controllable preparation of various kinds of nanomaterials using thiol-functionalized MOF shows great prospects. In this work, a thiol-functionalized metal–organic framework sheet structure ( Co-MOF/NF ) on nickel foam was successfully prepared by in situ interfacial growth synthesis, which was transformed into its derivatives S-doped β-Co(OH) 2 nanoflowers Co-x/NF ( x = 1, 2 and 6) in different concentrations of KOH solutions through ion etching/exchange reaction. The pristine thiol-functionalized Co-MOF/NF and its derivatives Co-x/NF ( x = 1, 2 and 6) nanoflower-like arrays could be used as positive electrode materials for effective supercapacitors. Among them, the transformation of the nanoflower-like Co-1/NF electrode exhibits excellent electrochemical properties with high areal capacitance (1925 ± 23 mF/cm 2 at 1 mA/cm 2 ), good rate performance, excellent conductivity and decent cycling stability. The Co-1//AC ASC device provides a high energy density of 0.176 mWh/cm 2 (92.6 Wh/kg) at a power density of 0.745 mW/cm 2 (392.1 W/kg). And this Co-1//AC ASC device exhibits a good cycling stability and practical application in energy storage field. This study provides a new strategy for the pristine thiol-functionalized MOF and its conversion nanostructures for energy storage applications.
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高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 7
·1-11
·
IF 5.3
Li Junhong,Huang Hui,Xie Shuqian,Zhang Huan,Huang Xinyu,Yue Ruirui,Xu Jingkun,Duan Xuemin
A promising electrochemical sensing platform for the detection of ponceau 4R in food has been fabricated based on the carboxylated graphene oxide (GO-COOH), metal–organic framework (MOF) UIO-66-NH 2 , and poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). To this end GO-COOH was covalently coupled with UIO-66-NH 2 through amide reaction, endowing the material (GO-CONH-UIO-66) unique hierarchical pores and high chemical stability and as a result improving the conductivity of MOF and the dispersion of GO. After the addition of PEDOT:PSS into GO-CONH-UIO-66, the continuity and conductivity of the composite (PEDOT:PSS/GO-CONH-UIO-66) have been further enhanced, due to the high conductivity, favorable film-forming, and hydrophilic properties of PEDOT:PSS. Systematic electrochemical experiments confirm that the PEDOT:PSS/GO-CONH-UIO-66/GCE shows satisfactory electrochemical sensing properties towards the detection of ponceau 4R, with a wide linear detection range of 0.01–30 μM, a low limit of detection of 3.33 nM, and a high sensitivity of 0.606 μA μM −1 cm −2 . The PEDOT:PSS/GO-CONH-UIO-66 sensing platform was successfully used to detect ponceau 4R in beverage, and the detection results were compared with high-performance liquid chromatography. As a result, the PEDOT:PSS/GO-CONH-UIO-66 composite shows a promising application prospect for rapid detection of ponceau 4R in food and will play significant role in food safety detection and supervision. Graphical Abstract
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Zarfashan Shahid,Bairong Fu,Saima Rehman,Zia Ahmad,Jiping Chen,Xianbo Lu
Bisphenol compounds, including BPA and BPS, are significant pollutants found in the environment, food, and daily necessities. They pose various adverse effects, including estrogenic, immunotoxic, metabolic, and reproductive toxicity, which severely threaten human health and ecological safety. Achieving simultaneous rapid detection of BPA and BPS is still very challenging due to their similar structures and co-existence in actual samples at ultratrace level. This study addresses the problem of developing an effective method for the rapid detection of BPA and BPS simultaneously. A new electrochemical nanosensor based on ionic liquid (IL) coupled Zr-MOF@GO was developed for ultrasensitive real-time detection of BPA and BPS. The Zr-MOF@GO/IL nanocomposite features a custom-built structure with an ordered framework, abundant pores, and highly coupled interfaces. The experimental findings demonstrate that the introduction of IL enhances the conductivity and dispersibility of the nanocomposite, improves the absorption capability for target bisphenols, and significantly improves the detection limit and linear range of the Zr-MOF@GO based electrochemical sensor. The sensor demonstrated wide linear ranges with detection limits of 5.5 nmol/L for BPA and 7.1 nmol/L for BPS (S/N = 3), respectively. Comparative studies revealed that the detection limits of the Zr-MOF@GO/IL-based sensor improved by an order of magnitude compared to the Zr-MOF@GO-based sensor. Additionally, the sensor exhibited superior analytical performance regarding reproducibility, stability, and selectivity. This study investigated the capability and synergy of IL coupled high-valent stable transition metal Zr IV -based MOFs in electrochemical sensing for the first time. This development sets a new benchmark in non-enzymatic electrochemical sensing, establishing the Zr-MOF@GO/IL-based sensor as a promising platform for the individual or simultaneous rapid detection of bisphenols in actual samples.
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