Advanced Fiber Materials
·
2024
·Vol. 6
·期 2
·444-457
·
IF 17.2
Xiao Yuanxiang,Jiang Jingjing,Cai Rui,Fu Jiajia,Xiang Shuangfei,Zhao Shujun,Fu Feiya,Diao Hongyan,Liu Xiangdong
Unpredictable pandemics are likely to pose a significant global threat in the future, and biologically protective textiles will play critical roles in controlling the spread of pathogens during outbreaks. Herein, we present a novel metal–organic framework (MOF) composed of repeating units of a Cu(II)/(L-Cys) 2 complex formed through coordination bonds between Cu(II) and L-Cys, while being interconnected by ionic bonds involving Cu(II) and the carboxylate group of L-Cys. After covalently embedding the MOF nanofibers onto cotton fiber surfaces, the resulting fabrics exhibit remarkable virucidal and antibacterial capabilities. Remarkably, even after 200 friction or 50 laundering cycles, the high antiviral ability to inactivate all phi- × 174 within 10 min was maintained, and the bacterial reduction rate against E. coli and S. aureus remained nearly at 100%. The remarkable virucidal effect of the L-Cys@Cu MOF structure is elucidated through a series of α-amylase denaturation simulation tests, providing the first experimental demonstration of the antiviral mechanism, whereby MOF nanofibers induce protein denaturation to inactivate viruses. Moreover, cytotoxicity assessments confirm that the fabrics adorned with MOF nanofibers are safe for human skin. These advantages are promising for the development of protective textiles, highlighting the great potential of nanoscience in combating pandemics. Graphical Abstract
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高影响因子
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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RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
·
2024
·
IF 1.8
Luyu Wang,Song Jia,Ruan Chenghai,Yu Chunyang
Abstract Identifying trace levels of perfluorooctane sulfonate (PFOS) at parts per trillion (ppt) in water remains a formidable task. Here, we fabricated MOF-808 through rapid microwave synthesis. Characterization of the synthesized MOF-808 involved techniques including XRD, FT-IR, SEM, and nitrogen sorption analysis. We integrated the MOF-808 as the sensing layer in a quartz crystal microbalance (QCM) sensor, specifically tailored for PFOS detection in water. Our findings revealed that the QCM sensor can detect 10 ppt of PFOS when the frequency shift is approximately 90 Hz within 50 s. Moreover, the continuous response, selectivity, and anti-interference capability of the sensor were systematically explored. This study introduces a pioneering approach for detecting ppt concentrations of PFOS in water, offering significant prospects for future applications and dissemination.
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FUEL PROCESSING TECHNOLOGY
·
2024
·
IF 7.2
Yucan He,Dongsen Mao,Qiangsheng Guo,Jun Yu
A series of highly ordered microporous Ce-based metal-organic frameworks (MOFs) were synthesized as the precursors for catalyst construction. The corresponding Ru catalysts were prepared by Ru impregnation on the derived CeO 2 by pyrolysis of Ce-MOF, and investigated for the CH 4 synthesis via CO 2 hydrogenation. Among the catalysts, Ru catalyst supported on the CeO 2 -B derived from Ce-BDC exhibited a highly competitive efficiency for CO 2 methanation, giving a CH 4 selectivity of 100% with a CO 2 conversion of 62% at 275 °C and 0.1 MPa, and the CH 4 productivity reached 0.49 mol/(mol Ru ·h). Characterization results revealed that more oxygen vacancies and corresponding surface oxygen species formed on the surface of CeO 2 -B derived from Ce-BDC caused to the stronger interaction between Ru and CeO 2 -B, which promoted the CO 2 adsorption and hydrogenation capacity of the catalyst, resulting in its better catalytic property. In situ diffuse reflectance infrared Fourier transform (DRIFT) studies further revealed that the route of HCOO* into CH 4 is a more competitive way of CO 2 hydrogenation to CH 4 .
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiawei Zhao,Rui Liu,Tiantian Tang,Zihao Liu,Xiaozhi Liu,Kai Yu,Ye Zhang,Hao Wang
Drug-resistant bacterial infections and biofilm formation have long posed significant challenges to public health, particularly in the context of chronic wound healing. In this study, the CuHspMOF were derived from copper and hesperitin (Hsp). The photocurable Epsilon-poly-l-lysine (EPLMA) and blueberry anthocyanin (BA) were synthesized through free radical polymerization. The multifunctional EB@CuHsp hydrogel exhibits excellent photothermal effect. One of the key features of the EB@CuHsp hydrogel is its ability to monitor the healing environment through color changes in response to variations in pH. This property allows for real-time assessment of the wound’s pH levels, reflecting the body fluid’s pH range during the healing process (pH 5–9). The hydrogel components work synergistically to facilitate wound healing. The EPLMA, with its positively charged, could captures bacteria and enable copper ions to eradicate bacteria at lower concentrations. This dual action leads to the creation of an optimal healing environment conducive to wound healing. During the inflammatory phase, BA and Hsp could collaborate to combat inflammation, which transited from the inflammatory stage to the proliferative phase soon. Continuous release of BA and Cu 2+ , coupled with thermotherapy, significantly enhances epithelial and blood vessel regeneration, thereby expediting the healing of chronic wounds. Overall, this multifunctional composite hydrogel holds great promise for promoting the regeneration of infected wound tissue, making it a potential candidate for chronic wound dressings.
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JOURNAL OF POROUS MATERIALS
·
2024
·
IF 2.5
Shi Xiang,Wang Ke,Wang Minxin,Yuan Hong
UiO-66 specimens having different acetic acid/ZrCl 4 molar ratios were prepared and pyrolyzed to ZrO 2 as supports for Pt and Ni, intended to catalyze the decarboxylation of oleic acid. Brunauer-Emmett-Teller surface area analyses, NH 3 temperature-programmed desorption and pyridine adsorption infrared spectroscopy showed that the material made using an acetic acid/ZrCl 4 molar ratio of 100 (ZrO 2 -100) had the largest specific surface area, acid amount and acid strength values. The yield of C 8 -C 17 alkanes obtained from Ni/ZrO 2 -100 exceeded that provided by Pt/ZrO 2 -100 because the latter possessed more acidic sites than the former, which excessively cracked long-chain hydrocarbons. The 1 wt% Ni/ZrO 2 -100 catalyst showed the best catalytic performance, with 96.4% conversion of oleic acid and an 80.6% yield of C 8 -C 17 alkanes after 4 h at 340 °C under a CO 2 atmosphere at a pressure of 18 bar. The conversion of oleic acid remained almost unchanged after 4 reuses of this catalyst whereas the yield of C 8 -C 17 alkanes decreased to 66.7%. This result is attributed to a loss of acidic sites and an increase in carbon build-up.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Guiqiang Qi,Kang Chen,Wenhua Guan,Junyu Xie,Xiangyan Chen,Guanhua Zhang,Ran Yan,Geng Yang
Photothermal therapy (PTT) and photodynamic therapy (PDT) provide targeted approaches to cancer treatment, but each therapy has inherent limitations such as insufficient tissue penetration, uneven heat distribution, extreme hypoxia, and overexpressed HSP90 in tumor cells. To address these issues, herein, by encapsulating the IR780 dye and glucose oxidase (GOx) enzyme within ZIF-8 nanoparticles, we created a versatile system capable of combining photodynamic and enhanced photothermal therapy. The integration of the IR780 dye facilitated the generation of reactive oxygen species and hyperthermia upon light activation, enabling dual-mode cancer cell ablation. Moreover, GOx catalyzes the decomposition of glucose into gluconic acid and hydrogen peroxide, leading to the inhibition of ATP production and downregulation of heat shock protein 90 (HSP90) expression, sensitizing cancer cells to heat-induced cytotoxicity. This synergistic combination resulted in significantly improved therapeutic outcomes. Both in vitro and in vivo results validated that the nanoplatform demonstrated superior specificity and favorable therapeutic responses. Our innovative approach represents a promising strategy for overcoming current limitations in cancer treatments and offers the potential for clinical translation in the future.
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PubMed
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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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Shan Yao,Jiahui Liu,Jinyi Tan,Kun Zhao,Zhiqing Lin,Lai-Hon Chung,Yang Zhou,Xinwen Ou,Jun He,Bin Han,Zhifeng Yang
Dual-atom catalysts (DACs) provide great potential for boosted photoreduction of diluted CO 2 , while the significance of inert sites in DACs is still overlooked. Herein, by loading extra Zn atoms into conducive metal-organic frameworks (CMOFs), we elaborately construct a well-defined DACs with a NiZn─O 4 configuration to decipher the critical role of inert Zn sites in DACs. Under visible light irradiation in pure CO 2 , the NiZn─O 4 DACs with the optimal Zn/Ni ratio exert a boosted CO generation rate of 20.17 µmol h −1 with a selectivity of 97%, which is significantly higher than that of the pristine Ni─O 4 single atom catalysts (SACs) and most documented systems. Additionally, in diluted CO 2 , the activity difference between them increases, and the CO selectivity of Ni─O 4 SACs drops from 95% to 88%, while it remains nearly constant (94%) in the NiZn─O 4 DAC-based system. Experiments combined with theoretical analysis demonstrate that the inert Zn sites enhance the electronic density of the coupled Ni sites, which accelerates electron transfer, promotes reduction kinetics, and lowers the energy barrier for the generation of * COOH key intermediate. This work highlights the intrinsic role of inert sites, paving new avenues for designing effective DACs for various applications.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2020
·
IF 4.872
Ying Su,Sicen Wang,Nan Zhang,Ping Cui,Yan Gao,Tao Bao
Phenoxy herbicides are widely applied in agricultural weeding. The determination of herbicides is important in environmental protection, agricultural production, food safety, and public health. In this study, a facile and efficient analytical method was proposed for the trace detection of phenoxy herbicides in soil, cucumber, and tap water samples by coupling pipette tip solid phase extraction (PT-SPE) with high performance liquid chromatography . UiO-66-funtionalized cotton ( [email protected] ) was packed into pipette-tip as sorbent to fabricate extraction device. The modification of UiO-66 on cotton fiber was confirmed using scanning electron microscope , Fourier transform infrared spectroscopy , and X-ray diffraction. The main factors affecting the adsorption of [email protected] for four phenoxy herbicides were evaluated by response surface methodology in detail. Under optimized conditions, [email protected] displayed excellent properties in the extraction of phenoxy herbicides with good peak shape. Linear ranges of 4-chlorophenoxyacetic acid, dicamba, 2,4-dichlorophenoxyacetic acid, and 2-(2,4-dichlorophenoxy) propionic acid were 1.4–72 μg/L, 5.6–280 μg/L, 2.8–140 μg/L and 3.2–160 μg/L (RSDs < 6.3%), respectively. The recoveries were between 83.3 and 106.8% with RSDs <6.7%, with detection limits ranging from 0.1 μg/L to 0.3 μg/L. The results show that [email protected] in PT-SPE is an effective method for monitoring phenoxy herbicides in complex samples.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Yanling Wang,Zhaozhu Zhang,Mingming Yang,Junya Yuan,Peilong Li,Meng Liu
Co-MOF (cobased metal-organic frame) nanosheets were developed onto the surface of PBO (poly(p-phenylene benzobisoxazole)) fabric, and OMMT (modified montmorillonite) was incorporated into phenolic resin synergistically to improve the wear resistance of PBO/phenolic resin composites. Co-MOF nanosheets with a large specific surface area exhibited strong interlocking and excellent compatibility between the fabric and resin. In addition, OMMT possessed excellent affinity with phenolic resin and a larger lamellar space, and then polymer chains could be conveniently entangled into interlayers, which further confined the movement of molecular chains caused by friction heat. In addition, a weak interlayer force was conducive to facilitating the formation of a uniform and robust transfer-film on the counterpart. It was demonstrated that the Co-MOF@PBO/OMMT composites presented optimal tribological behavior due to the synergistic effect between interfacial modification and OMMT reinforcement.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Qiang Li,Xiaomeng Zhou,Li-Li Tan,Li Shang
Ultrasmall gold nanoclusters (AuNCs) with distinct photoluminescence properties are promising fluorophores for optical applications. However, it remains a great challenge to precisely modulate their near-infrared (NIR) fluorescence properties via a simple yet efficient strategy. Herein, we report a new, surface tailoring strategy for effectively modulating the NIR fluorescence property of AuNCs by harnessing the attractive property of metal-organic frameworks. With zeolite imidazolate frameworks-8 (ZIF-8) as the example, we showed that highly fluorescent AuNCs can be in situ encapsulated into ZIF-8 via a one-pot reaction, yielding [email protected] composites with enhanced NIR fluorescence intensity . Particularly, [email protected] composites exhibit an emission maximum at 830 nm, which is 190 nm longer than the emission wavelength of AuNCs without the ZIF-8 encapsulation. Mechanism studies based on fluorescence decay spectra and X-ray photoelectron spectroscopy revealed that ZIF-8 mainly poses a significant effect on the ligand-metal charge transfer process of AuNCs due to the confinement effect . By incorporating Rhodamine B (RhB) into NIR-emitting [email protected] composites, we established a ratiometric fluorescent sensing platform for the detection of acetylcholinesterase (AChE) based on the turn-on fluorescence response of AuNCs towards thiolates. The [email protected] /RhB system exhibits a high sensitivity with a detection limit of 0.4 mU/mL and good specificity towards common biological interferences. Moreover, the present ratiometric fluorescence assay shows good recovery for AChE detection in human serum, suggesting its potential application for real sample analysis. Finally, the fluorescence response mechanism of both [email protected] and AuNCs towards AChE is elucidated by fluorescence lifetime analysis and density functional theory (DFT) calculation. This study demonstrates the feasibility of modulating the NIR fluorescence property of AuNCs by MOF-based surface tailoring strategy towards enhanced biosensing application.
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