FOOD CHEMISTRY
·
2023
·
IF 8.8
Yu-Han Sun,Liu Yang,Xian-Xian Ji,Yuan-Zhen Wang,Yu-Long Liu,Ying Fu,Fei Ye
Flusilazole is a triazole fungicide with residues that are potentially toxic to humans. It enters the human body mainly through food, although its bactericidal activity is substantial. In this study, an electrochemical sensor Fe/Fe 2 O 3 @C with a core–shell structure was constructed to efficiently detect flusilazole by annealing MIL-53(Fe) which was prepared by a simple solvothermal method. Transmission electron microscopy and scanning electron microscopy were used to characterize the apparent morphology of MIL-53(Fe) and Fe/Fe 2 O 3 @C , and their structures were further characterized by X-ray photoelectron spectroscopy, Raman spectroscopy, powder X-ray diffraction, and the mapping of elements by energy dispersive spectroscopy. The electrochemical behavior of Fe/Fe 2 O 3 @C in the detection of flusilazole was evaluated by differential pulse voltammetry under optimal conditions. The results of the study indicate that the Fe/Fe 2 O 3 @C electrochemical sensor displayed excellent detection capabilities for flusilazole, where the sensor exhibited a wide detection range from 1.00 × 10 −4 to 1.00 × 10 −12 mol/L with an incredibly low LOD of 593 fM, making it highly sensitive to trace amounts of flusilazole. Moreover, Fe/Fe 2 O 3 @C demonstrated superior reproducibility, stability, and resistance to interference, highlighting its reliability in practical applications. The sensor was also successfully utilized to quantitatively detect flusilazole in various real samples, which suggests that Fe/Fe 2 O 3 @C has broad-spectrum environmental resistance and can effectively and rapidly detect flusilazole residues in different types of food items and environmental matrices. The study also delved into the mechanism of Fe/Fe 2 O 3 @C for the detection of flusilazole, providing a deeper understanding of the functionality of this sensor. Overall, these findings emphasize the practical significance of Fe/Fe 2 O 3 @C as an electrochemical sensor, showcasing its potential for real-world applications in food safety and environmental monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Han Sun,Fang Xu,Yongmei Hu,Sui-Jun Liu,Haiping Huang
A series of Pt/Ni-MOF nanocomposites with different atom molar ratio of Pt/Ni were synthesized by the traditional hydrothermal method. Various methods including element mapping, X-ray diffraction (XRD) were employed to characterize the crystal structure and surface morphology of the materials. TEM (Transmission Electron Microscopy) confirms that the Pt nanoparticles are highly dispersed onto the Ni-MOF nanosheet surface, which can provide an abundance of active sites for efficient oxidation of methanol. Electrochemical measurements showed that Catalyst b (the atomic molar ratio of Pt to Ni is 2:1 in the precursor materials) exhibited a higher oxidation current density in MOR and larger electrochemically active surface area (ECSA) than other catalysts with different atomic ratios and commercial Pt/C. Meanwhile, the synthesized catalysts showed long-term activity and good resistance to toxicity.
✓ 已验证
产品关联
DOI
高影响因子
ACS ES&T Engineering
·
2023
·
IF 7.1
Yilei Fang,Qian Guan,Mengyu Tang,Xinyu Zhang,Xu Wu,Huabin Zeng,Xin Yu,Ranwen Ou
Elimination of toxic Cr(VI) in industrial effluent is essential; numerous adsorbents have been developed for Cr(VI) adsorption, but a sustainable adsorbent with chemical-less and environmentally friendly regeneration methods that could greatly reduce chemical eluent usages, recycling costs, and secondary pollution is still lacking. Here, we report a copolymer network of diallyldimethylammonium chloride and N-isopropylacrylamide (pDDA-pNIPAm) functionalized metal–organic framework (MOF) materials as a thermally regenerable cationic ion adsorbent (pDDA-pNIAPm-MIL-53) for highly selective and sustainable Cr(VI) removal. At room temperature (ca. 25 °C), it quickly adsorbed Cr(VI) oxyanions from water with a maximum adsorption capacity of 45.5 mg g–1, showing a remarkable Cr(VI) selectivity up to 130 in the presence of coexisting anions with ion molar ratio of 1:1. Importantly, pDDA-pNIAPm-MIL-53 with adsorbed ions could be efficiently regenerated in warm water (35–50 °C) with excellent reusability, so the low-grade waste heat from Cr(VI) pollutant industries can be used as an energy source. The high selectivity and thermal regeneration ability of this adsorbent ensure the efficient removal of Cr(VI) from water and the high purity of Cr(VI) from regeneration. This work provides scientific support for designing MOFs with selective adsorption behavior and thermally regenerable function for highly selective toxic ion removal and sustainable regeneration.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Mei Chen,Xu Li,Yinxiang Li,Yanhu Li,Ziyu Qin,Qingji Wang
ZnO nanoflower was directly fabricated on ceramic and then Co 3 O 4 was grown in-situ on ZnO nanoflower by a MOF-derived method. Co 3 O 4 nanoparticles were successfully coated on the surface of ZnO nanoflower to develop a sensor for the detection of carbon monoxide . Notably, the Co 3 O 4 /ZnO sensor exhibits an outstanding response of 38 % to 100 ppm CO at 210 ℃ with a fast response/recovery time (38 s/50 s). In addition, the sensor showed excellent selectivity for CO, which is 14 times better than for the second gas (500 ppm CO and NH 3 ). In the meantime, the sensor's response remained a stable value when the 100 ppm CO is mixed with 100 ppm H 2 , CH 4 and HN 3 , respectively. The prominent CO sensing performance of the sensor is attributed to its unique structure charaterastics of nanoflower and the constructed heterostructure , which provides a large surface area and abundant active sites. Therefore, the sensor based on MOF-derived Co 3 O 4 nanoparticles directly on ZnO nanoflower have promising application for constructing high performance CO sensor in the detection domain.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·
IF 7
Huiting Hu,Han-Feng Cui,Xia Yin,Qiqi Fan,Hai Shuai,Jing Zhang,Sheng Fu Liao,Wei Xiong,Dong he Jiang,Hao Fan,Wenming Liu,Guobing Wei
A dual-mode fluorescence and electrochemiluminescence (FL-ECL) sensor for apoE gene detection has been designed, harnessing the distinct properties of Ruthenium Metal Organic Framework Nanosheets (RuMOFNSs). The strategy capitalizes on the quenching effect of the Ru(bpy)₃²⁺ ECL signal by ferrocene, facilitating the creation of a multi-electron electrical signal marker known as bisferrocene. Through anchoring the P-DNA onto RuMOFNSs, bisferrocene effectively quenches both FL and ECL emissions. Introduction of the T-DNA, and the subsequent formation of double-stranded DNA, allows the ExoⅢ enzyme to remove the bisferrocene fragment, rejuvenating the signals. Impressively, the sensor boasts expansive detection linear ranges (1 fM to 1 nM for FL; 0.01 fM to 10 pM for ECL) and exceptional sensitivity (0.048 fM for FL; 0.016 fM for ECL). Its dual-mode framework grants heightened reliability via a self-validation mechanism, mitigating the occurrence of false positives. When juxtaposed with single-mode sensors, this dual-format exhibits marked superiority. Field tests further validate the sensor's efficacy in genuine sample analysis, highlighting its potential in precursory disease detection. This avant-garde methodology paves the way for advanced multi-signal responsive sensors, with profound implications for the future of diagnostic instruments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2023
·
IF 6.4
Wenhong Zhang,Kun Li,Liuwenlin Han,Wu Tianyu,Junying Zhang,Jue Cheng
The development of multifunctional electromagnetic waves (EMW) absorption materials has significance for addressing the hazards posed by EMW. Herein, we designed a polyurethane-based EMW absorption materials (P6H7-B3¬O3-CoNC@rGo6%) with high strength, self-healing and high-efficiency EMW absorption ability properties. The P6H7-B3¬O3-CoNC@rGo6% has excellent EMW absorption performance with RLmin of -47.1 dB at 12.8 GHz and the EAB is 4.11 GHz at 2 mm thickness as well as a very low filler mass loading of only 6 wt%. The polyurethane (P6H7-B3¬O3) and the nanocomposites (P6H7-B3¬O3-CoNC@rGo6%) exhibit excellent mechanical property with 62.79 MPa and 22.04 MPa, respectively. Additionally, the P6H7-B3¬O3-CoNC@rGo6% can rapidly restore to its original state at 85 oC by the ester exchange reaction of boron ester bond. This strategy provides a new idea for designing polyurethane-based EMW absorption materials and extending service life of EMW absorption materials.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yihua Lv,Jingyan Tian,Zebin Chen,Jianhao Wang,Li-An Ma,Lei Zhang,Song Chen,Qianting Wang,Xiaoyun Ye
The development of high-performance microwave-absorbing materials (MAMs) to address electromagnetic (EM) pollution has become a focus of attention for researchers. The combination of MXene and heterogeneous MOF with complementary advantages can be designed into novel composites with promising microwave absorption (MWA) properties. In this paper, the M/CoNi/C series composites derived from MXene/CoNi-MOF were prepared by in situ hydrothermal-pyrolysis process. The effects of the molar ratio of Co 2+ /Ni 2+ and the addition amount of MXene on the morphology and EM parameters of the composites were investigated, and then the MWA performance and mechanisms of M/CoNi/C composites were analyzed. The results showed that the uniformly distributed CoNi and graphitic carbon in the M/CoNi/C composites formed a core–shell structure, and TiO 2 nanoparticles modified on the carbon lamellas originated from MXene. The minimum reflection loss (RL min ) value of the optimized M/Co 1 Ni 1 /C reaches −61.34 dB only at the thickness of 1.9 mm, and the effective absorption bandwidth (EAB) value is 5.2 GHz only at 1.7 mm. The RL min values in the thickness range of 1.5–3.0 mm are all less than −30 dB. The tunable microstructures, multiple interfacial polarizations, and dielectric-magnetic synergies optimize the impedance matching, which is conducive to achieving good broadband EM wave absorption performance. This paper provides a reference strategy for the design and construction of a high-performance MXene-based microwave absorber with controllable morphology and electromagnetic parameters.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2023
·
IF 13.1
Zhiyang Huang,Miao Liao,Shifan Zhang,Lixia Wang,Mingcheng Gao,Zuyang Luo,Tayirjan Taylor Isimjan,Bao Wang,Xiulin Yang
Tackling the problem of poor conductivity and catalytic stability of pristine metal-organic frameworks (MOFs) is crucial to improve their oxygen evolution reaction (OER) performance. Herein, we introduce a novel strategy of dysprosium (Dy) doping, using the unique 4 f orbitals of this rare earth element to enhance electrocatalytic activity of MOFs. Our method involves constructing Dy-doped Ni-MOF (Dy@Ni-MOF) nanoneedles on carbon cloth via a Dy-induced valence electronic perturbation approach. Experiments and density functional theory (DFT) calculations reveal that Dy doping can effectively modify the electronic structure of the Ni active centers and foster a strong electronic interaction between Ni and Dy. The resulting benefits include a reduced work function and a closer proximity of the d -band center to the Fermi level, which is conducive to improving electrical conductivity and promoting the adsorption of oxygen-containing intermediates. Furthermore, the Dy@Ni-MOF achieves superhydrophilicity, ensuring effective electrolyte contact and thus accelerating reaction kinetics. Ex-situ and in-situ analysis results manifest Dy 2 O 3 /NiOOH as the actual active species. Therefore, Dy@Ni-MOF shows impressive OER performance, significantly surpassing Ni-MOF. Besides, the overall water splitting device with Dy@Ni-MOF as an anode delivers a low cell voltage of 1.51 V at 10 mA cm −2 and demonstrates long-term stability for 100 h, positioning it as a promising substitute for precious metal catalysts.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 41
·16033-16045
·
IF 4.5
Tian Yuhao,Li Ting,Cai Weijie
Recently, bio-ethanol reforming with CO 2 (EDR) has been considered as one of the environment-friendly processes to diminish the emission of greenhouse gas, along with increasing the production of value-added syngas. However, designing high-performance catalysts is still a great challenge. In this work, MOF-derived CoMO x (M:Ce,Zr,Zn) catalysts were applied in EDR reaction for the first time to explore the influence of support types on catalytic performance. Characterization of the investigated catalysts by XPS, XRD, H 2 -TPR, Raman, TEM and BET depicted the difference in cobalt dispersion, specific surface area as well as Co-support interaction. Indeed, H 2 -TPR and XPS results revealed stronger Co-Ce interaction and the smaller particle size of Co 3 O 4 in Co-CeO 2 catalyst which contributed to higher activity. Indeed, 100% of ethanol conversion was obtained at 550 °C and the formed H 2 /CO ratio (1.18) was suitable for the downstream Fischer–Tropsch process. Meanwhile, no remarkable decline of ethanol conversion and product distributions occurred after 40 h stability tests. The findings implied that EDR process might be suitable to consume greenhouse gas and reduce carbon footprint. Characterization results of the used catalysts indicated that Co-CeO 2 catalyst presented an outstanding anti-aggregation and anti-coking property. Herein, the effect of support type in this work might provide guidance for the design of high-performance catalysts for other heterogeneous reactions operated at high temperature. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Ye Bian,Zhuolun Niu,Chencheng Zhang,Yue Pan,Yong Wang,Chun Chen
Metal-organic frameworks (MOFs) are currently one of the most attractive porous materials. Integrating MOFs into an organic polymer matrix is considered a promising approach for controlling air pollutants. Especially, the nanoscale miniaturization of MOFs is promising to serve as membranes for efficient air quality control. Here, we proposed the use of spray-initiation as a facile and rapid methodology to assemble homogeneous growth of nanoMOFs on the electrospun fibers, yielding the composite fiber with diameters smaller than 300 nm. The developed ZIF-8-encrusted nanofiber membrane achieved superior filtration performance. Compared with the filter without MOF growth, the MOF-encrusted nanofiber filter achieved enhanced filtration efficiency and almost no change in pressure drop. For the most penetrating particles, the ZIF-8-encrusted nanofiber filter can even reach a 10% increment. This work shows that introducing the MOF nanoparticles onto the nanofibers with homogenous distribution can significantly improve the capacity of the filters in controlling submicron particles, and provide an important reference for the rational design of structures of composite materials.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Fengping Zhan,Yanan Zhao,Xiaohui Dai,Jingbin Zeng,Qingxiang Wang
The development of new method for the rapid and facile screening of antibiotics residues in food is of great importance in food safety. Herein, a nanocompisite of polyaniline@copper-1,3,5-benzenetricarboxylic acid (PAN@Cu-BTC) with excellent electrochemical activity was directly prepared on the screen-printed electrode surface by a two-step electrochemical synthesis method. Then the tetracycline aptamer (TC-Apt) was assembled onto the electrode surface through the coordination between 5′-PO 4 3- on the aptamer and Cu 2+ on the MOF, achieving a novel electrochemical aptasensor for tetracycline (TC). The PAN@Cu-BTC has two functions in the aptasensors, namely the immobilization matrix of the aptamer probe and the internal signal source for target recognition. The electrochemical sensing assays showed that the capture of TC-Apt to the target on the electrode surface could cause the decrease of the electrochemical signal of PAN@Cu-BTC. Based on this, the TC can be analyzed in a wide range from 10 pM to 1 µM, with a low detection limit of 0.32 pM. The recoveries of the aptasensor for the detection of TC from Ctenopharyngodon idella meat were 90.0 %∼102.0 %, indicating that the constructed aptasensor is applicable for the detection of TC residues in fresh aquatic products.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Zhanqing Yu,Xiaoli Hu,Zhongmin Su
Cobalt-based metal-organic frameworks (MOFs) have been used as catalysts to remove macromolecular organic pollutants from wastewater. In this work, a novel type of cobalt-based MOF, CUST-593, was synthesized from cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O), 2,2-bipyridine (BIPY), and 4,4ˊ,4ˊˊ-nitrilotrisbenzoic acid (NTB) using solvothermal method. The catalytic properties of CUST-593 for degrading dyes in water were then investigated. CUST-593, with the chemical formula {Co(NTB)(BIPY)(H 2 O)·0.5H 2 O·0.1DMA}, exhibited excellent catalytic activity in degrading dyes such as methyl orange (MO) and rhodamine B (RhB) in aqueous solutions. CUST-593 has a multi-layered structure, connected by carboxylate hydrogen bonds, which is beneficial to improving its water stability. Synthetic test results showed that CUST-593 effectively attacked dyes by primarily generating sulfate radicals (SO 4 •− ) and a portion of hydroxyl radicals (•OH). Under the testing conditions, MO removal efficiency reached approximately 95 %. Moreover, CUST-593 exhibited remarkable cycling catalytic properties, broad pH range applicability, and long-term effectiveness. A mechanism for the degradation of dyes by CUST-593 was proposed. The experimental findings in this study collectively support the conclusion that CUST-593 serves as a green and environmentally friendly catalyst for the degradation of dyes in polluted water.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）