Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 33
·11204-11212
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IF 6.4
Zhimin Mao,Su-Yun Zhang,Duo Zhao,Xiaoliang Weng,Chenxu Kang,Hui Fang,Yu-Jia Zeng
The development of metal–organic framework (MOF) materials with multifunctionalities has boosted their prospects in the fields of spintronics and optoelectronics. However, incorporating magnetic and optoelectronic properties in MOF materials remains challenging. Herein, the in situ synthesis of Cu-MOF-74, a typical one-dimensional linear magnet, is systematically investigated, which shows ferromagnetic and antiferromagnetic interactions along the axial chain direction, and overall tilted antiferromagnetism at low temperatures. In particular, the introduction of SnS:Co quantum dots (QDs) enhances the antiferromagnetic coupling, which increases the phase transition temperature of the MOF from 7.8 K to 275 K at 1000 Oe. In addition, it is demonstrated that Cu-MOF-74 possesses both magnetic and optoelectronic properties. It is found that the responsivity and detectivity of the Cu-MOF-74 photodetector are both significantly improved by the SnS:Co QDs. This research provides promising methods for concurrent improvement of the magnetic and optoelectronic properties of MOF materials, advancing in-depth research on the MOF film as a new type of semiconductor for spintronic and optoelectronic devices.
研究领域:
材料科学
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自旋电子学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2024
·Vol. 30
·期 3
·1615-1625
·
IF 2.4
Dong Jinxiu,Cui Shichuang,Wang Fei,Wei Wei,Yin Ziluo,Zhang Yuqing,Zhu Quanyao
Electrochromism (EC) is a color control technique for providing visual information, in which vanadium pentoxide (V 2 O 5 ) is a promising material for electrochromic applications due to its excellent ionic intercalation/deintercalation properties and cathodic/anodic color-changing properties. However, its poor cycling stability and color change response rate limit its practical application. Metal–organic frameworks (MOFs) combine the rigidity and flexibility of inorganic–organic materials and can meet the requirements of EC materials such as cycle stability, electrical conductivity, and stress-interference resistance. We report here a strategy to modify V 2 O 5 with Cu-MOF. Cu-doped V 2 O 5 and carbon skeleton (Cu 2 V 2 O 7 @C) composites were prepared for electrochromism. In this scheme, Cu doping can facilitate lithium ion migration by broadening and stabilizing the structure of V 2 O 5 , and the distribution of the carbon skeleton can broaden the contact of the active material with the electrolyte and improve the electron conduction. Combining these merits, it exhibits excellent long-term cycle stability (the capacity retention rate reaches 91.78% after 2000 cycles), the light transmission modulation is greatly improved compared with V 2 O 5 (Δ T = 69%, doubled), and the response time is reduced by 30.43%. This study provides a new perspective for improving the light modulation ability and long-term use stability of vanadium oxide EC materials and promotes the development of MOF materials in the field of electrochromism.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Xuzhao Gao,Yueyang Xu,Yan Yin,Ning Gu,Yongping Zeng
The adsorption desulfurization technology presents remarkable advantages and is a promising method because of its affordability, gentle operating conditions. Metal-organic frameworks (MOFs) have garnered significant attention owing to their remarkable features, including large specific surface areas, pore volume and the designable structure. The hierarchical porous CuBTC-DMA was successfully synthesized by adding salicylic acid and using the hydrothermal method. Subsequently, Ni ions were introduced into the structure using ion-exchange method. It was found that the doping of salicylic acid and Ni ions did not significant alter the structure of the material. The new type of π-complexed adsorbent, Ni@HP-CuBTC-DMA, was prepared. The results of adsorption desulfurization experiments showed that Ni@HP-CuBTC-DMA-1.5(0.2 M) had the highest adsorption capacity, with the maximum adsorption amounts of 25.63 mg S/g and 41.06 mg S/g for thiophene and benzothiophene , respectively. In the toluene competition experiment, the adsorption amount of thiophene could still reach 19.25 mg S/g. The results of regeneration experiments demonstrate that Ni@HP-CuBTC-DMA-1.5(0.2 M) still has excellent adsorption capacity after four cycles.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 7
·2889-2897
·
IF 2.5
Yanan Zhu,Yongchang Yang,Shiqiang Li,Chang Zhu,Zegang Qiu,Qianqian Zhu
The development of efficient materials for adsorption desulfurization has attracted much attention for the safety of humans and the ecosystem. Metal–organic frameworks have shown promise in removing organic sulfur compounds in liquid fuels, while another star material – MXene has rarely been applied in this field. In this study, Ti3C2Tx MXene/Cu-MOF composites with different MXene contents (3.3%, 6.7%, and 13.3%) were synthesized via an in situ precipitation method. Characterization showed that the Cu-MOF was successfully coated on the surface of Ti3C2Tx MXene and partially embedded between the MXene nanosheets, restraining the agglomeration of both MXene and the Cu-MOF. The optimal composite-3.3%MXene/Cu-MOF presented the largest surface area of 166.6 m2 g−1. Compared to MXene and Cu-MOF, 3.3%MXene/Cu-MOF exhibited an enhanced adsorption performance for methyl phenyl sulfide in the model fuel with an equilibrium adsorption capacity of 87.4 mg g−1. Furthermore, the effects of adsorption parameters, adsorption kinetics, adsorption isotherms, and the adsorption mechanism, and regenerative performance of 3.3%MXene/Cu-MOF were comprehensively discussed. A pseudo-second order kinetic model and the Langmuir adsorption isotherm were found to better explicate the adsorption behavior on 3.3%MXene/Cu-MOF, which exhibited a theoretical maximum adsorption capacity of 183.9 mg g−1. This work hopes to shed light on the material design for adsorption desulfurization.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2022
·
IF 11.307
Jing Chen,Ying Chen,Shuying Li,Jiao Yang,Jianbin Dong,Xiaoquan Lu
Tyrosine is the precursor of some neurotransmitters such as thyroxine and dopamine. It has the effect of regulating emotions and stimulating the nervous system. Changes in tyrosine levels in the human body are associated with certain diseases. Therefore, it is very necessary to prepare a new type of tyrosine sensor. In this work, an enzyme-free electrochemical sensor based on MXene/CNTs/CuMOF composite was developed for the detection of tyrosine. Embedding carbon nanotubes (CNTs) into MXene effectively prevented the aggregation of MXene sheets. Further modification of MXene/CNTs materials with CuMOF octahedral particles with porous structure can improve the porosity and catalytic capability of the composites. Under the optimal detection conditions, the prepared sensor has good linearity in the detection of tyrosine within range 0.53 μM–232.46 μM with a limit of detection (LOD) of 0.19 μM. The stability and selectivity of the sensor is high, and can be used to detect tyrosine in human serum.
研究领域:
生物医学工程
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Rong Liu,Yan Gao
Titanium alloys are widely used in marine environments and medical fields due to their excellent corrosion resistance and high specific strength. However, their good biocompatibility can lead to severe biofouling, thereby limiting their effectiveness. To inhibit biofouling on the surface of titanium alloys, this study proposes an antifouling solution, which involves the in situ preparation of Cu-MOF film on titanium alloys by leveraging the antibacterial properties of Cu ions. Here, the dense and stable TiO2 film on the surface of Ti-6Al-4V titanium alloy was removed by alkali-heat treatment; meanwhile, a porous surface structure was simultaneously obtained where OH– ions were retained. In the subsequent step, the retained OH– ions in the pores attracted Cu2+ ions in solution to form Cu(OH)2 in the pores, providing active sites for the formation of Cu-MOFs. Subsequently, Cu(OH)2 reacted with organic ligand (1,3,5-benzenetricarboxylic acid, BTC) at room temperature to form Cu-MOFs in the pores, which then grew quickly to cover the alkali-heat-treated surface within 1 h. The formation mechanism of Cu-MOF film on Ti-6Al-4V was elucidated, which provides a reference for designing and preparing multifunctional MOF film in situ on titanium alloys. The stability of in situ-grown Cu-MOF samples and their inhibitory effects on bacteria and microalgae have also been verified. The results indicate that although the stability of Cu-MOFs is relatively poor, their bactericidal and algicidal effects are extremely significant, suggesting that this material has significant potential for short-term applications that require high antibacterial performance.
研究领域:
材料科学
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生物医学工程
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海洋科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yaqing Zhao,Kang Qin,Yaqing Zhou,Wei Liu,Zhixian Gao,Yuan Peng
Organophosphorus pesticides, commonly used in agricultural practices, remain as residues in food and the environment, presenting a significant risk to human health. The removal of these pesticides is essential to protect both human health and the environment. This study presents an in-situ synthesis technique that combines Cu-MOF (ZZU-282) with electrospinning technology to create a novel cross-linked MOF fiber membrane (cross-linked Cu-MOF-PAN FM, with PAN representing Polyacrylonitrile). The coexistence of micro/meso/macropores within the cross-linked Cu-MOF-PAN FM reduces mass transfer resistance and improves its pesticide removal capacity. The half-life for chlorpyrifos removal by the cross-linked Cu-MOF-PAN FM is about 18 s. The Langmuir model estimates the theoretical maximum removal capacity for chlorpyrifos at 208.3 mg g –1 . Additionally, the removal performance of organophosphorus pesticides is tested in simulated water samples, with results showing that over 70 % of six mixed organophosphorus pesticides are removed within 10 min using the proposed FM. The cross-linked Cu-MOF-PAN FM demonstrates superior efficiency in both rapid and sustained removal of organophosphorus pesticides from water, offering promising potential for environmental applications and pollutant removal. Moreover, the cross-linking process enhances the membrane’s resistance to organic solvents. This in-situ growth and cross-linking method offers a promising approach for fabricating MOF fiber membrane composites.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Xian-En Zhao,Ya-Nan Zuo,Yinghui Xia,Jing Sun,Shuyun Zhu,Guobao Xu
Although fluorescent nanozymes exhibit great potential in sensing fields, few current nanozyme-based sensors are designed to discriminate catechol (CC) from its two isomers. Herein, fluorescent metal-organic framework (MOF)-based nanozyme is utilized for ratiometric and selective detection of CC without the interferences of hydroquinone (HQ) and resorcinol (RC). NH 2 -Cu-MOF plays multiple roles: (1) it exhibits excellent photoluminescence at 435 nm owing to the 2-amino-1,4-benzenedicarboxylic acid ligand; (2) Cu 2+ imparts MOF oxidase activity to trigger the oxidation of o -phenylenediamine (OPD) into luminescent products (oxOPD) with emissive peak at 571 nm, which quenches the intrinsic fluorescence of NH 2 -Cu-MOF (435 nm) through inner filter effect (IFE); (3) Cu 2+ can complex with CC specifically to produce complex containing o -semiquinone, which not only inhibits MOF’s oxidase-like activity but also quenches the fluorescence of MOF. Therefore, the presence of CC induces the decrease of fluorescence at 571 nm followed by the slight recovery of fluorescence at 435 nm. Notably, HQ and RC have negligible influences on the fluorescence of NH 2 -Cu-MOFs/OPD system. Based on these facts, a ratiometric fluorescence platform for CC has been constructed. It exhibits high sensitivity towards CC with LOD of 0.1 μM.
研究领域:
分析化学
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生物传感
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 24
·10388-10398
·
IF 3.553
Zhong Mingjun,Zhang Shizhen,Dong Anwang,Sui Zhuyin,Feng Lijuan,Chen Qi
Heterogeneous metal–organic framework composites are widely used to catalyze the synthesis reaction of organic materials. Here, we report the use of a heterogeneous catalyst to catalyze the reaction of alcohols and amines to synthesize imines directly using a one-pot method. A low-dimensional Cu-MOF prepared by a simple surfactant-assisted method shows the morphology of nanorods. Cu-MOF nanorods provide an ideal support for preparing supported metal nanocatalysts. A reduction method was applied to immobilize the ultrafine noble metal Au and Pd nanoparticles on the surface of Cu-MOF nanorods to form a Cu-MOF/Au–Pd composite catalyst. Cu-MOF/Au–Pd catalyst is used to catalyze the reaction between alcohols and amines to form imines. Due to the synergy between different metal nanoparticles, it can effectively catalyze the reaction to form imines. In addition, Cu 2+ in Cu-MOF/Au–Pd catalyst facilitates the adsorption of substances by excess electrons and promotes product formation. After 12 h of catalytic reaction, the yield of imine is as high as 95%.
研究领域:
催化
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材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Chemical Engineering and Processing-Process Intensification
·
2024
·
IF 3.8
Xiaocui Zhang,Xiaoxin Wang,Jun Gao,Jiangcheng Li,Xiangfeng Liang,Qinghui Shou
The global need for bromide ions (Br - ) has driven the research focus to extract them from various liquid ores. Highly efficient and selective adsorbent is still lacking. MOF with large surface area and structural stability are promising candidate for Br - extraction. In this work, we prepared Cu-MOF-74 nanocrystals. Abundant hydroxyl groups on them spontaneously reduced Ag + to Ag 0 nanoparticles, resulting in the fabrication of Ag 0 doped Cu-MOF-74. The crystalline structure retains after the doping of Ag 0 when the mass ratio of silver nitrate to MOF is <0.5. The crystals are distorted or even damaged when the ratio is higher than 1.0 according to XRD and DFT calculation. The adsorption capacity of Ag 3 -Cu-MOF-74 is 232.92 mg g -1 , surpassing the capacities of most previously documented adsorbents. The desorption of Br - and thereafter the recovery of adsorbent could be realized through light driven decomposition of AgBr. This MOF adsorbent shows promising application potential in Br - recovery from various liquid ores.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Hongai Zheng,Meilin Zhu,Derui Wang,Yao Zhou,Xin Sun,Shuangyan Jiang,Mengyao Li,Cunzheng Xiao,Daquan Zhang,Lizhi Zhang
Membrane fouling is one of the main impediments that limit the wide application of Polyvinylidene fluoride (PVDF) membrane. In this study, for the first time, we incorporated the cellulose nanocrystal (CNCs) onto Cu-MOF-74 by physical stirring and then coated the composites on the PVDF membrane to ameliorate the antifouling performance. The PVDF membrane with the addition of CNC/Cu-MOF-74 composite showed enhanced hydrophilicity compared with the pristine membrane, which significantly promoted the permeability and antifouling performance. The Bovine serum albumin (BSA) multiple-cycle antifouling results revealed that the flux recovery ratio (FRR) value (76.9 %) was much higher than that of the pristine membrane (60.8 %). The enhancement of recovery flux was correlated with the increased electrostatic repulsion and hydrophilicity of the modified membrane according to the contact angle test and Zeta-potential measurement. Meanwhile, the CNC/Cu-MOF-74 modified membrane showed improved antibacterial efficiency (96.3 % at 4 h) due to the predominant antibacterial efficacy of Cu-MOF-74. The efficiently antibacterial achievement of modified membrane was attributed to the release of Cu 2+ and the generation of •OH. This study proposed a novel modified membrane with excellent antifouling properties and provided new insights into the fabrication of antifouling membranes with outstanding performance.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Xiaohong Tan,Hao Lin,Jiahao Zhou,Zhanhua Su,Bingbing Wan,Xiangming Li,Zhongqun Zhou,Yuge Liu,Guiyin Li
Hepatocellular carcinoma (HCC) is a leading cause of cancer-related mortality worldwide. Early detection of HCC is pivotal for early treatment, thereby improving survival rates. Golgi protein 73 (GP73) is a promising biomarker for early HCC diagnosis, making it crucial to develop a sensitive method to detect GP73. In this study, a novel ratiometric electrochemical aptasensor was fabricated for the sensitive detection of GP73 using Hemin-Cu-based metal-organic framework (Hemin-Cu-MOF) nanocomposites and GP73 aptamers. The Hemin-Cu-MOF nanocomposites possessed not only excellent electroactive property with the Hemin and Cu-MOF as dual signal outputs, but also good electroconductivity to amplify the electrochemical signals. The Hemin-Cu-MOF nanocomposites with numerous active sites was used to label the GP73 aptamer (AptI) and construct the Hemin-Cu-MOF-AptI signal probe. Another sulfhydryl-modified GP73 aptamer (AptⅡ) was immobilized on the gold nanoparticles (Au) modified screen-printed carbon electrode (Au/SPCE) through gold-sulfur (Au-S) bonds and used as a capture probe. Upon adding GP73, AptI and AptⅡ specifically recognized GP73 to form the sandwich complex AptⅡ@GP73@Hemin-Cu-MOF-AptI, making the dual signal of Hemin-Cu-MOF change and indicating GP73 level. Under optimal experimental conditions, the ratio of two oxidation peak currents (I Cu-MOF /I Hemin ) was proportional to the GP73 concentration (1.0–300.0 ng/mL), with a detection limit as low as 0.625 ng/mL. Furthermore, the aptasensor was tested in real human serum samples using the standard recovery method, with recoveries ranging from 104.10 % to 116.66 %. Thus, the proposed aptasensor has great potential in clinical analysis for detecting GP73 and early diagnosing of HCC.
研究领域:
生物医学工程
·
肿瘤学
·
分析化学
✓ 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）