APPLIED SURFACE SCIENCE
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2022
·
IF 7.392
Weiwei Li,Wenlan Ji,Murat Yılmaz,Tian C. Zhang,Shaojun Yuan
Arsenic is a toxic carcinogen, and arsenic pollution in groundwater is one of the most serious environmental problems in the world. Thus, it is an urgent problem to efficient removal of arsenic from groundwater. In this work, a novel MWCNTs/MIL-53(Fe) nanocomposite was successfully synthesized to improve the water stability of MIL-53(Fe) by incorporation of carboxylated multi-walled carbon nanotubes (MWCNTs) using a one-pot hydrothermal method, and was then used to efficiently adsorb As(V) ions from groundwater. Adsorption experimental results demonstrated an ultrafast adsorption rate of As(V) on the MWCNTs/MIL-53(Fe) nanocomposites in solution pH values of 3 to 10, and the adsorption equilibrium could be reached in circa 20 min with an adsorption capacity of 27.24 mg·g −1 in a low As(V) concentration of 10 mg·L −1 . The adsorption kinetics of As(V) on the MWCNTs/MIL-53(Fe) was found in line with the pseudo-second-order (PSO) kinetic model, and was simultaneously controlled by both internal diffusion and liquid film diffusion. The adsorption isotherm data conformed to the Redlich-Peterson isotherm model, indicating both physical and chemical adsorption occurred at heterogeneous interfaces. Moreover, the postulated adsorption mechanism of As(V) on MWCNTs/MIL-53(Fe) nanocomposites was ascribed to hydrogen-bond interaction, electrostatic attraction and chemical complexation. Therefore, the as-prepared MWCNTs/MIL-53(Fe) nanocomposites not only exhibit superior water stability and outstanding adsorption performance in removing arsenic-contaminated groundwater, but also offer a novel insight for rational preparation of water-stable MOF-based composites.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Journal of Cleaner Production
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2024
·
IF 9.7
Song Xiao,Menglei Jin,Junyi Chen,Peng Wu,Ju Tang,Yi Luo,Yi Li
Perfluoroisobutyronitrile (C 4 F 7 N) mixed with CO 2 has emerged as a promising eco-friendly alternative to sulfur hexafluoride (SF 6 ) in gas-insulated equipment (GIE). However, thermal or discharge faults in GIE inevitably lead to the generation of harmful decomposition by-products, necessitating their prompt removal to safeguard equipment operation and personnel safety. In this study, we propose a nanofiber composite material comprising polyacrylonitrile (PAN) as the base and multi-metal organic frameworks (MOFs) as the primary adsorbent material for removing typical decomposition components of C 4 F 7 N/CO 2 gas mixture. Utilizing grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations, we elucidate the selective adsorption mechanisms. Experimental results show that PAN@HKUST-1(Cu) exhibits superior adsorption efficiency for fluorocarbon gases compared to PAN@MIL-101(Cr), while the latter demonstrates better performance for nitrile gases. The PAN@HKUST-1(Cu)/MIL-101(Cr) composite adsorbent effectively removes eight typical harmful decomposition products while minimally affecting C 4 F 7 N. Our findings suggest that PAN@HKUST-1(Cu)/MIL-101(Cr) nanofiber film holds promise as an adsorbent for C 4 F 7 N/CO 2 based GIE.
研究领域:
材料科学
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环境工程
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化学工程
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纳米技术
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2020
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IF 8.758
Rong Hu,Xi Zhang,Kuan-Neng Chi,Tong Yang,Yun-Hui Yang
In this study, a ratiometric electrochemical sensor based on metal–organic frameworks (MOFs) was developed for sensing of multiplex metal ions. The bifunctional MOFs were prepared in a way to integrate two signal tags and a detection probe. In the presence of target metal ions, the target metal ions can replace the framework metal-ion center in the original MOFs through an ion-exchange reaction, leading to ratiometric electrochemical signals under different applied potentials. One consisted of the Cu2+ signal generated from electroactive MOFs selected as internal reference signals. The other consisted of the signal induced by other target metal ions. Using the Imetal ions/ICu2+ signal as the output, the prepared ratiometric probe was able to eliminate disturbance caused by the sensing environment. Moreover, the large surface area and abundant active sites in MOFs produced a multiplex ratiometric electrochemical sensor with improved characteristics in terms of reproducibility, stability, and sensitivity. The sensor was also simple without sophisticated instrumentation, amplification processes, or an acid dissolution/preconcentration procedure, hence promising for practical applications.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Biosensors-Basel
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2022
·Vol. 12
·期 6
·367
·
IF 5.743
Rui-Hong Ye,Jin-Yang Chen,Di-Hui Huang,Yan-Jun Wang,Sheng Chen
The electronic conductive metal-organic frameworks (EC-MOFs) based on a single ligand are not suitable for the accurate detection of bisphenol A (BPA) due to the limitations of their electron-transfer-based sensing mechanism. To overcome this drawback, we developed EC-MOFs with novel dual-ligands, 2,3,6,7,10,11-hexahydroxy-sanya-phenyl (HHTP) and tetrahydroxy 1,4-quinone (THQ), and metal ions. A new class of 2D π-conjugation-based EC-MOFs (M-(HHTP)(THQ)) was synthesized by a self-assemble technique. Its best member (Cu-(HHTP)(THQ)) was selected and combined with reduced graphene (rGO) to form a Cu-(HHTP)(THQ)@rGO composite, which was thoroughly characterized by X-ray diffraction, field scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Cu-(HHTP)(THQ)@rGO was drop-cast onto a glassy carbon electrode (GCE) to obtain a sensor for BPA detection. Cyclic voltammetry and electrochemical impedance tests were used to evaluate the electrode performance. The oxidation current of BPA on the Cu-(HHTP)(THQ)@rGO/GCE was substantially higher than on unmodified GCE, which could be explained by a synergy between Cu-(HHTP)(THQ) (which provided sensing and adsorption) and rGO (which provided fast electron conductivity and high surface area). Cu-(HHTP)(THQ)@rGO/GCE exhibited a linear detection range for 0.05–100 μmol·L−1of BPA with 3.6 nmol·L−1(S/N = 3) detection limit. We believe that our novel electrode and BPA sensing method extends the application perspectives of EC-MOFs in the electrocatalysis and sensing fields.
研究领域:
材料科学
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分析化学
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环境科学
✓ 已验证
DOI
高影响因子
Biosensors-Basel
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2025
·Vol. 15
·期 5
·313
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IF 5.6
Yinjun Li,Hua Ding,Ziyu Wang,Zewei Luo,Xitian Peng
Lateral flow immunoassay (LFIA) is a promising tool for rapid detection in the field of agricultural product analysis due to its advantages of cost-effectiveness and operational simplicity. In this work, Eu metal–organic frameworks (MOFs) were introduced to LFIA as a rapid detection method characterized by high stability and low interference. Key research objectives included strong fluorescence, ease of labeling, and the utilization of fluorescent probes. Eu-MOFs were synthesized in one step via the hydrothermal method, exhibiting a fluorescence lifetime of 163 μs and spherical particles with diameters ranging from 250 to 400 nm. These conditions fulfill the characteristics and requirements of LFIA. Eu-MOFs exploit the porous nature of MOFs to mitigate the drawbacks associated with complex crosslinking agents. This enables antibody proteins to be cross-linked merely upon contact, thereby simplifying the detection process. A time-resolved LFIA method was developed utilizing Eu-MOFs for the detection of aflatoxin B1 (AFB1) in corn, achieving a limit of detection (LOD, IC10) of 0.149 ng/mL. The accuracy and reliability of the Eu-MOFs-LFIA method were validated through comparisons with spiked concentrations during spiking and blind sample analyses, with verification conducted using ultra-high-performance liquid chromatography mass spectrometry (UPLC-MS). Furthermore, testing of real samples demonstrated that the Eu-MOFs-LFIA method can effectively facilitate rapid detection of AFB1 in corn.
研究领域:
食品科学
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分析化学
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生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2025
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IF 5.5
Jing Chen,Jiawen Li,Huanhuan Wang,Xincun Dou,Baiyi Zu
How to modulate the open metal sites (OMS) for enhancing the luminescence emerges as a significant issue to explore in the exploration of high-performance metal-organic frameworks (MOFs) for photoluminescence (PL) sensing and X-ray detection. Here, by efficiently extending the conjugation of the ligand, nanoscale Zr-ADIP, which has eight OMS per Zr cluster, was first synthesized and demonstrated to have enhanced PL and X-ray excited luminescence (XEL) performance. Furthermore, a modulator tuning strategy was adopted to occupy the OMS, which has been proven to be efficient for engineering the unoccupied electronic levels, promoting the relaxation of the excited electrons, and enhancing the PL efficiency. It is found that with benzoic acid as the modulator, the optimal nanoscale Zr-ADIP-BzOH exhibits superior performance with an X-ray detection limit of 0.53 μGy s–1, which is 10 times lower than the minimum X-ray dose rate requirement for medical X-ray imaging. The superior XEL performance of Zr-ADIP-BzOH has been further proven to be effective in the tentative monitoring of the morphology of a mature pearl in a clam sample by constructing a condensed film device. We expect that the proposed OMS introduction and modulator tuning strategy would offer insights for the structural design and performance enhancement of luminescent MOFs.
研究领域:
材料科学
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光学
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医学影像
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产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2020
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IF 7.094
Qiuying Zhao,Lu Yang,Qirui Peng,Yizhou Ma,Hongli Ji,Jinhao Qiu
Dielectric polymer/composites films with excellent capacitive performance has initiated enormous interest from both academic and industry because of their great potential as flexible and light-weight electrostatic capacitors for modern electric and electronic systems. In this work, we report a novel flexible dielectric composite film consisting of poly (vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) and dopamine-modified metal-organic frameworks Co 3 [Co(CN) 6 ] 2 (D-M) with excellent capacitive performance for energy storage application . It is found that the D-M show good compatibility with P(VDF-HFP), permitting a high breakdown strength for composites. Meanwhile, the large specific surface area and special porous three-dimensional nanostructure of D-M also has the effect of raising dielectric performance while eliminating the inherent ferroelectric loss of P(VDF-HFP), resulting in considerably promoted discharge energy density . Furthermore, D-M is found to favor the formation of γ-phase in P(VDF-HFP), which is also advantageous to raise the discharge energy density. Upon a small loading of 0.6 wt% D-M, the composites perform a maximum discharge energy density of 11.89 J/cm 3 and discharge efficiency of 71.28% at 350 MV/m, which are 3.04 times and 1.25 times those of the pure P(VDF-HFP) film, respectively. For the first time, we demonstrate that the applicability of flexible D-M/P(VDF-HFP) dielectric composites as advanced electrostatic capacitors, providing a new sight for the design of dielectrics with high capacitive performance.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2019
·Vol. 144
·期 6
·2120-2129
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IF 4.019
Zhuo Ye,Qingwei Wang,Jiantong Qiao,Yuanyuan Xu,Gaiping Li
A novel type of sandwich MOF was successfully synthesized on reduced graphene oxide (denoted as M@Pt@M-rGO) by an in situ synthesis method. The obtained M@Pt@M-rGO possesses excellent electrochemical properties. The surface morphology and structure of M@Pt@M-rGO were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), etc. By using M@Pt@M-rGO, a novel electrochemical sensor was constructed and successfully used for the simultaneous and sensitive detection of three isomers: hydroquinone (HQ), catechol (CT) and resorcinol (RS), with wider linear ranges of concentrations of 0.05–200 μM, 0.1–160 μM and 0.4–300 μM and lower detection limits of 0.015 μM, 0.032 μM and 0.133 μM (S/N = 3) for HQ, CT and RS, respectively. Besides, the proposed electrochemical sensor showed excellent anti-interference capability, high stability, good reproducibility, and satisfactory recovery for determination of isomers in river and lake water.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2022
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IF 6.449
Heng Zhang,Feng Cheng,Yan Li,Chao He,Hu Li,Song Yang
Efficiently selective catalytic conversion of biomass into biofuels and high-value chemicals using robust and porous catalysts is of great significance for valorization of renewable carbon resources. With respect to this, to reduce the supply dependence on natural oils, heterogeneous catalysis provides the opportunity for versatile anethole (AN) synthesis from bio-derived 4′-methoxypropiophenone (4-MOPP) via the one-pot cascade reactions of catalytic transfer hydrogenation (CTH) followed by dehydration, using an alcohol hydrogen donor and a Lewis/Brønsted acid catalyst. Herein, a sustainable and green strategy for catalytic upgrading of 4-MOPP to AN was developed via the cascade CTH-dehydration process, which was remarkably promoted by polymeric organophosphate unconventional MOFs-hafnium nanohybrids (PDVP-Hf) prepared via a simple solvothermal method. Interestingly, Brønsted/Lewis acidity, Lewis basicity, and hydrophobicity of PDVP-Hf could be effectively regulated by simply adjusting the composite components, among which PDVP-Hf-3 having an amorphous and porous inorganic-organic framework structure (with mesopores centered at 6.52 nm), an enhanced acidity of a suitable B/L molar ratio with lower basicity, and a strong hydrophobicity (water contact angle of 113°), was demonstrated to be efficient for selective conversion of 4-MOPP to AN with a maximum yield of 98.9% using 2-pentanol as hydrogen donor. Moreover, this developed catalytic system exhibited broad substrate generality, and could be employed for reductive upgrading of various carbonyl compounds to alcohols, or further coupled with dehydration to afford olefins. The catalyst synergistic roles of L acid-base couple sites (Hf 4+ -O 2− ) and B acid species (-OH) contributed to its pronounced performance, while high thermostability and robust hydrophobicity of PDVP-Hf-3 endowed its superior reusability, with no significant decline in reactivity for five consecutive recycles. The involved catalytic mechanisms and reaction pathways were explicitly elucidated by control experiments and theoretical calculations. This work sheds light on the appropriate design of unconventional MOF-polymer nanohybrids by combining both advantages for enhanced biomass upgrading via tough cascade reactions.
研究领域:
化学工程
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催化科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2019
·Vol. 6
·期 1
·89-98
·
IF 3.431
Ming Gong,Jian Yang,Qixin Zhuang,Yongsheng Li,Jinlou Gu
Graphical A metal-organic framework (MOF)-based nanoplatform with dual-targeting functions toward cancer cells and their mitochondria is established, via a proposed phosphorylation modification strategy. With the complete coverage of targeting molecules (i. e., TPP molecules for mitochondrial targeting and FA molecules for tumoral targeting), the efficacy of photodynamic therapy is greatly improved. Due to the existence of hypoxic microenvironment, the efficacy of photodynamic therapy (PDT) is frequently weakened. As a result, targeted treatment toward oxygen-rich mitochondria is considered as a promising cancer therapy. Herein, both triphenylphosphine (TPP) and folic acid (FA) are simultaneously grafted onto nanoscale metal-organic frameworks (NMOFs) to realize dual-targeting delivery of the nanoplatforms into cancer cells and their mitochondria via the proposed phosphorylation modification strategy. A large amount of highly efficient photosensitizer of porphyrinic molecules is integrated into the NMOFs with a uniform particle size of about 65 nm. Thanks to the strong Zr−O−P bonding, a dense coverage of phosphonate-conjugating targeting molecules on NMOFs is obtained and each surficial unsaturated Zr−O cluster is adequately occupied. The resultant dual-targeting NMOFs feature high biostability and biocompatibility, as well as improved cellular uptake and mitochondrial accumulation. The PDT efficacy of these dual-targeting NMOFs is significantly improved with a low IC 50 of 0.74 μM upon 10 min light radiation, which is at least four times higher than that of non-targeting counterparts. This phosphorylation strategy would be hopeful for immobilizing a variety of biogenic groups on NMOFs to make them targetable to various specific organelles and to improve the therapy efficacy on related diseases.
研究领域:
癌症治疗
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纳米技术
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Ping-Ping Sun,Yu-Hang Zhang,Hongwei Shi,Fa-Nian Shi
Two new 3-dimensional (3D) 3d-4f bimetal organic frameworks (ZnCe-MOF and CuCe-MOF) were created through hydrothermal method. These MOFs have the similar formula (M 2 (imidazole) 2 Ce(H 2 O)(C 2 O 4 ) 1/2 (4,5-ida) 2 ·2(H 2 O), M = Zn, Cu; 4,5-ida: 4,5-imidazole dicarboxylate) and possesses monoclinic symmetry in the P2 1 /n space group. The electrodeposition method was used to in-situ coat polyaniline (PANI) to improve the electrical conductivity. As the electrode materials for supercapacitors in three-electrode system, the specific capacitance of CuCe-MOF@PANI-1 and ZnCe-MOF@PANI-1 electrodes can reach 724.4F g −1 and 713.2F g −1 at 1 A g −1 . Using the as-synthesized CuCe-MOF@PANI-1 heteorostructure as positive material, the assembled hybrid capacitor delivers an energy density of 87.45 Wh kg −1 and 58.05 Wh kg −1 at power density of 850 W kg −1 , demonstrating that the heteorostructure of MOF coated with PANI has promising applications in portable energy storage devices.
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
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Xixiang Meng,Caizhi Lv,Xiaohui Wen,Xiandeng Hou,Chenghui Li,Juan He
A new bimetallic-centered MOFs, NH 2 -MIL-125(Ti/Ce), was synthesized by partially replacing Ti with Ce. The doping of Ce endowed the MOFs oxidase-like activity and enabled the construction of a ratiometric fluorescence sensing system in combination with o-phenylenediamine (OPD) for detecting trace Cu 2+ with a limit of detection of 16 nM and a linear range of 0.02–50 μM. Trace Cu 2+ was successfully quantified in real water samples. The doping of Ce also increased the photocatalytic capability of the MOFs by about 2 times, achieving excellent reduction of Cr(Ⅵ) under natural light conditions.
研究领域:
材料科学
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环境科学
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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）