COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2017
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IF 2.714
Zhennan Shi,Chen Xu,Han Guan,Ling Li,Lu Fan,Yingxi Wang,Li Liu,Qingtao Meng,Run Zhang
We designed and synthesized a magnetic metal organic frameworks (MOFs) composite, Cu-MOFs/Fe 3 O 4 as the adsorbent for removal of lead (Pb(II)) and malachite green (MG) in wastewater. This Cu-MOFs/Fe 3 O 4 can be easily prepared by in-situ growth of Cu-MOFs with doping Fe 3 O 4 nanoparticles . The prepared Cu-MOFs/Fe 3 O 4 composite was well characterized by SEM , XRD , and FTIR spectra. The adsorption experiments found that Cu-MOFs/Fe 3 O 4 can serve as adsorbent for removal of Pb(II) and MG simultaneously. The adsorption capacities were found to be 113.67 mg/g for MG and 219.00 mg/g for Pb 2+ , respectively, which are significantly higher than reported materials. Adsorption isotherm , kinetics and recyclability of Cu-MOFs/Fe 3 O 4 for removal of Pb(II) and MG were then studied. Adsorption of Pb(II) and MG exhibited Freundlich adsorption isotherm model, with the adsorption kinetics of available second-order kinetic. Physical adsorption for MG and chemical adsorption for Pb(II) were confirmed by Dubinin-Radushkevich (D-R) isothermal adsorption model. The adsorption of Pb(II) and MG in real water samples were then studied. The Fe 3 O 4 /Cu-MOFs was found to be recyclable for removal of Pb(II) and MG, can be explored as the potential adsorbent for waste water treatment.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Chenghan Ji,Mujian Xu,Hang Yu,Lu Lv,Weiming Zhang
The development of heavy metal adsorbents with high selectivity has become a research hotspot due to the interference of coexisting ions (e.g., Na + , Ca 2+ ) in the actual wastewater, but the more difficult regeneration caused by high adsorption selectivity severely limits its practical applications. Herein, a carboxyl adsorbent, MIL-121, demonstrated high adsorption selectivity for heavy metals at 10,000 mg/L of Na + (removal > 99% for Cu 2+ ) as well as unexpected easy regeneration (desorption > 99%) at low H + concentration (10 −3.5 –10 −3.0 M), which is hundreds of times lower than that of ever reported selective adsorbents (> 10 −1 M H + ). X-ray photoelectron spectrometry (XPS), extended X-ray absorption fine structure (EXAFS) coupled with Density functional theory (DFT) simulation unveil that the -COOH groups in MIL-121 for heavy metals adsorption is specific inner-sphere coordination with higher binding energy (1.31 eV for Cu), and less energy required for regeneration (0.26 eV for H). Similar high selectivity and easy regeneration were also satisfied with other heavy metals (e.g., Pb 2+ , Ni 2+ ), and removal of heavy metals remained > 99% in 10 consecutive adsorption-desorption cycles. For actual copper electroplating wastewater treatment , MIL-121 could produce ~ 3600 mL clean water/g sample, outperforming 300 mL that of the benchmark commercial adsorbent D-113. This study shows the potential of MIL-121 for heavy metal wastewater treatment and provides mechanistic insight for developing adsorbents with high selective adsorption and easy regeneration.
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
PubMed
高影响因子
Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-16
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IF 12.264
Deng Baiwen,Xiang Zhen,Xiong Juan,Liu Zhicheng,Yu Lunzhou,Lu Wei
Sandwich-like laminated Fe&TiO 2 @C nanocomposites were successfully prepared from the MXene–MOFs hybrids.
A broad effective bandwidth of 6.5 GHz at a thickness of only 1.6 mm was achieved.
研究领域:
材料科学
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电磁学
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DOI
PubMed
高影响因子
NANOTECHNOLOGY
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2021
·Vol. 32
·期 46
·465705
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IF 3.874
Na Wang,Siyang Liu,Zhongqiao Sun,Yide Han,Junli Xu,Yan Xu,Junbiao Wu,Hao Meng,Bingsen Zhang,Xia Zhang
The synergistic effects involving surface adsorption and photocatalytic degradation commonly play significant roles in the removal of persistent synthetic organics from wastewater in the case of porous semiconductors. Inspired by the visible-light harvesting advantages of porphyrin-based MOFs, a capsule-like bimetallic porphyrin-based MOF (PCN-222(Ni/Hf)) has been successfully constructed through a facile hydrothermal method. In which, the Hf (IV) ions were exactly bonded to the carboxyl groups substituted on the porphyrin rings, meanwhile the Ni (II) ions were finely bonded to the −N inside the porphyrin rings. The adsorption/photocatalytic performances were assessed by using four persistent dyes including rhodamine B (RhB), basic violet 14 (BV14), crystal violet, and acid black 210 (AB210) as the target substances, and enhanced total removal efficiency was obtained by the bimetallic PCN-222(Ni/Hf) in comparison with that of single PCN-222(Hf). The electrochemical analyses and the sacrificial agent capture experiments were carried out to elucidate the photocatalytic mechanism, and the adsorption/photocatalytic stability of PCN-222(Ni/Hf) is also investigated. The work has broadened the applications of porphyrin-based MOFs in the removal of organics by combining their excellent surface adsorption capacity and photocatalytic activities.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
PubMed
高影响因子
WATER SCIENCE AND TECHNOLOGY
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2023
·Vol. 87
·期 5
·1202-1213
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IF 2.7
Liu Zhenzhong,Wu Yang,Wan Siwen,Wang Boyan,Ji Hongliang,Xiang Xiaofang
View large Download slide View large Download slide Close modal Compared with the common synthesis methods of metal-organic frameworks (MOFs), Co/Cu-based bi-MOFs composite catalyst Co X Cu (10− X ) -MOFs ( X = 2, 4, 6, and 8) was prepared by a facile synthesis method at room temperature. The bi-MOFs composite catalyst was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The removal ability of sulfamethoxazole (SMX) by different Co:Cu rate bi-MOFs composite catalysts, single Co-based MOFs (zeolitic imidazolate framework-67, ZIF-67), and Cu-based MOFs (Hong Kong University of Science and Technology-1, HKUST-1) were investigated and the effects of peracetic acid (PAA) concentration, catalyst dosage, the common interfering substances (Cl − , HCO 3 − , SO 4 2− , HA) in water, and SMX removal were investigated. Through the analysis of different free radical scavengers and the changes of surface elements before and after the reaction, the oxidation mechanism was further explored, and the stability of Co 4 Cu 6 -MOFs was explored through repeated recycling. The experimental results demonstrate that Co 4 Cu 6 -MOFs have a high catalytic activity for PAA. Co 4 Cu 6 -MOFs/PAA show the best removal effect of SMX under neutral conditions and the presence of Cl − and HCO 3 - can promote the removal of SMX. Co 4 Cu 6 -MOF composites were synthesized and used for SMX removal. Application of PAA activation catalyst to generate R–O• for SMX removal. The effects of different environmental factors on the removal of SMX were discussed.
研究领域:
环境科学
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化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Danhua Guo,Huijun Li,Zhouqing Xu,Yujie Nie
A smart fluorescent pyrene-based MOFs ( HPU-26 ) was synthesized by the solvothermal method, which possessed multi-stimuli-responsive properties and could detect water content in common organic solvents . The reversible multicolor fluorescent switching between yellowish green and cyan were observed under the stimulation of force, heating, and acid-base vapors. PXRD pattern, DSC curve, FI-IR spectra and the solid-state UV–vis absorption spectra were conducted to prove that the changes of π - conjugation induced the transformations between excimer and monomer formation under external stimulation, thus resulting in different fluorescent properties. In addition, HPU-26 could realize the detection of water content by remarkable change of fluorescent color from yellowish green to blue with increasing the water content in common organic solvents, which was attributed to the decomposition of crystal structure. The limit of detection (LOD) values of HPU-26 for detecting the water content in EtOH, DMA, Acetone and ACN were determined as 0.0260 %, 0.0578 %, 0.1978 %, and 0.5637 % (v/v), respectively. Furthermore, HPU-26 could be applied in advanced anti-counterfeiting and convenient visual detection of water content in common organic solvents by smartphone-based software.
研究领域:
材料科学
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分析化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Linyun Mou,Ya Lu,Jiale Ma,Shuwei Shu,Jianlong Li,Ganpeng Li
In response to the rapid quality degradation of peaches due to post-harvest decay, this study developed a composite film for preservation. Two primary pathogens responsible for peach decay, Aspergillus flavus and Talaromyces funiculosus , were identified. Molecular docking attributed to the main binding position of citral and geraniol's interactions with type I polyketide synthase on their antifungal effects, as well as the caffeic acid with its tyrosinase on antioxidant efficacy. β -CD-MOFs were synthesized via vapor diffusion, demonstrating exceptional spatial loading via SEM. CEOs (citral + geraniol) encapsulated in β -CD-MOFs were incorporated into a chitosan/pullulan matrix, yielding a film with 260.27 % fracture tensile strain, significantly ( P < 0.001) outperforming pure chitosan (21.87 %), possessing excellent mechanical properties, and the improvement in the water solubility of the film facilitates the release of active compounds. The utilization of a compositel film on peaches has shown significant efficacy in controlling decay index ( P < 0.05), weight loss ( P < 0.05), firmness ( P < 0.05) and production of malondialdehyde ( P < 0.05). Compared to untreated controls, the treated peaches exhibited an extended shelf life of 2 days, highlighting the superior preservation capabilities of the film. Hence, the film presents a promising solution for fruit preservation.
研究领域:
食品科学
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材料科学
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植物病理学
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DOI
PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
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2024
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IF 6.1
Zeyang Wu,Jie Fei,Chang Li,Jifeng Yan,Xinyu Ke,Lehua Qi
As a nanoscale carbon material, carbon spheres (CS) are expected to achieve ideal lubrication performance by reducing direct contact between friction pairs and bearing loads. In this work, 2D Cu-MOFs surface modified (CS@Cu(BDC)) CS was added to the base oil, which exhibited a remarkable reduction in friction coefficient and wear rate (62.2%, 33.9%), the width of the friction pair wear marks was decreased by 30.8% relative to the base oil. The improvement in performance can be attributed to the polishing, repairing, filling and tribo-film forming effects of CS@Cu(BDC). This work provided an effective strategy for diversifying the surface structure of CS and opened new avenues for the development of a new generation of green and efficient lubricant additives .
研究领域:
材料科学
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摩擦学
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环境科学
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DOI
高影响因子
LUMINESCENCE
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2022
·Vol. 37
·期 12
·2050-2058
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IF 2.613
Xin Hou,Xiaohui Wen,Juan He,Xiandeng Hou
Lanthanide metal–organic frameworks Eu(BTB) MOFs was synthesized in low-temperature plasma produced by dielectric barrier discharge (DBD). This DBD synthesis possesses the characteristics of rapid reaction (within 20 min), mild condition (low temperature and atmospheric pressure) and simple operation compared with many traditional synthesis methods. The prepared Eu(BTB) MOF material exhibits typical red light emitting of europium (Eu 3+ ) at 617 nm, which can selectively and sensitively be quenched in the presence of trace iron(III) ion (Fe 3+ ). A simple, fast and sensitive fluorescence sensing strategy of Fe 3+ was thus constructed, with a limit of detection (LOD) of 0.5 μM. Compared with reported fluorescence probes, Eu(BTB) MOFs have also demonstrated the advantages of low cost, easy and fast preparation, great stability, and excellent optical properties, thus making them a promising fluorescence candidate for trace Fe 3+ sensing for the potential application in biological systems in the future.
研究领域:
材料科学
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分析化学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
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2024
·
IF 8.9
Jing Sun,Senyang Song,Chuyan Deng,Qianqian Wang,Xiaoyan Ma
With the development of wearable diagnostic devices, integrated bifunctional electrode materials with both electrochemical energy storage and glucose catalytic properties have attracted great attention. In order to obtain better electrochemical energy storage and glucose catalytic properties, in this paper, we reported a strategy to artificially intervene in the formation of extensible coordination structural units from metals and ligands (secondary-building units (SBUs)), in which the ligand of the monometallic MOFs was extended with Schiff base reaction to obtain new coordination sites and to form ultimate bimetallic MOFs with different SBUs by changing the metal feeding order. It is found that Ni-Co PyMOF, coordinated by Ni as a second metal with carboxyl-modified Co PyMOF, has the best electrochemical energy storage and catalytic properties due to its different SBUs with Co-Ni PyMOF and Ni/Co PyMOF. Ni-Co PyMOF exhibits a specific capacitance of 1471 C g −1 at 1 A g −1 and the asymmetric button-type supercapacitors with Ni-Co PyMOF exhibits the energy density of 37.43 W h kg −1 with a power density of 850 W kg −1 and the capacitance retention of 94 % after 5000 cycles. Besides, in the glucose catalytic properties test, Ni-Co PyMOF has a better properties with sensitivity of 387.63 μA cm −2 mM −1 in the linear range of 1.57 μM–3.50 mM. The experimental comparison reveals that Ni-Co PyMOF has higher energy storage capacity and glucose catalytic ability, which is a bifunctional MOF with promising applications.
研究领域:
材料科学
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电化学
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催化科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
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IF 9.8
Li Wang,Kang Wei,Yi Pan,Yang Wei,Zhengwu Wang,Lurong Xu,Yuanfeng Wang,Xinlin Wei
The hazardous effects of residues from organophosphorus pesticides (OPPs) on human health have prompted researchers to look for innovative adsorbents and detecting techniques. Herein, a simple and economical material Fe 3 O 4 @PCN-224 was effectively produced as a desirable adsorbent for OPPs residues adsorption by integrating magnetic polydopamine (PDA) with the zirconium-based metal-organic framework (PCN-224). Modification of magnetic cores with PCN-224 allowed a dramatic increase in surface area and porosity to enhance pesticide adsorption. Moreover, the adsorption mechanisms inferred that π-π interactions, covalent bonds, and hydrogen bonds may promote the beneficial adsorption of OPPs by Fe 3 O 4 @PCN-224. Finally, the Fe 3 O 4 @PCN-224-based HPLC method exhibited with low detection limits (0.014–0.051 μg/L), good precision (1.70 % – 3.49 %), wide linearity (1–100 μg/L, R 2 ≥ 0.9936), satisfactory recoveries (86.16 % – 106.45 %), and high enrichment factors (92–101), demonstrating its significant potential for efficient extraction, enrichment, and analysis of OPPs in complex matrix samples.
研究领域:
环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Jiali Zhong,Rou Cheng,Ziyi Guo,Zhixiang Yue,Zhengyue Xiao,Chunyan Yan,Xiaomin Tang,Ping Qiu
In recent years, the global burden of gout has been increasing, and an excessively high level of blood uric acid is an important cause of gout attacks. The rapid detection of uric acid (UA) is of great significance for the auxiliary diagnosis of disease. We synthesized bifunctional Fe3Cu-MOFs that combined excellent peroxidase activity and fluorescence probe. UA reacts with uricase to generate H2O2, which could be catalyzed by the Fe3Cu-MOF to involve hydroxyl radicals (•OH) and singlet oxygen (1O2). And these free radicals can oxidize o-phenylenediamine (OPD) to 2,3-diaminophenazine (DAP) and the solution changes from colorless to yellow. Meanwhile, there is fluorescence resonance energy transfer (FRET) between DAP and Fe3Cu-MOF, resulting in the weakening of the blue fluorescence of Fe3Cu-MOF. Based on these mechanisms, we constructed a dual-mode sensor for UA detection. The detection ranges of the colorimetric method and the ratiometric fluorescence method of this sensor are 1–250 and 0.5–250 μM, respectively, and the limits of detection are 0.43 and 0.30 μM, respectively. These results indicate that the sensor has excellent sensitivity for UA detection. In addition, we have also successfully applied this sensor to the detection of UA content in human serum samples and urine samples.
研究领域:
生物医学工程
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分析化学
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纳米材料
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临床检验
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）