SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yao Zhang,Guizhen Li,Xu Wang,Mingrong Lu,Jiaxiong Li,Xiuying Fang,Wenrong Yang,Min Yang,Hongbin Wang
The development of effective methods for identifying and eliminating antibiotics from wastewater is urgently needed, and it continues to pose significant challenges. In this study, a zirconium-based metal–organic framework (UiO-66) was synthesized using a straightforward one-pot method for the dual purpose of detecting and adsorbing tetracycline (TC). Characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analysis demonstrated that UiO-66 exhibited abundant surface functional groups and an exceptionally high specific surface area, resulting in a high TC removal efficiency of 85.14 % (initial concentration: 20 mg/L) over a wide pH range. The adsorption data were accurately described by the pseudo-second-order kinetic and Freundlich isotherm models. Notably, the UiO-66 material adsorbed with TC could be well regenerated at least two cycles, showing no significant loss in adsorption efficiency. Furthermore, the adsorbent demonstrated blue emission when excited at 310 nm. As the concentration of TC increased, a corresponding decrease in the fluorescence intensity of UiO-66 was observed. This change exhibited a linear correlation within the concentration range of 0.01 to 30 mg/L, achieving a detection limit as low as 0.003 mg/L. The UiO-66 probe exhibited exceptional specificity for TC and strong anti-interference capability, achieving satisfactory recoveries in the analysis of TC from real samples. These findings are poised to assist researchers in creating comprehensive strategies for the concurrent detection and elimination of antibiotics in the environment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2018
·Vol. 41
·期 22
·4149-4158
·
IF 2.415
Huixiao Duo,Yuhuan Wang,Licheng Wang,Xiaofeng Lu,Xiaojing Liang
A zirconium(IV)-based metal organic framework, composed of 4,4′-biphenyldicarboxylic acid ligands and Zr 6 O 4 (OH) 4 clusters, was successfully fabricated. Characterizations were performed on fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller, and thermogravimetric analysis, which confirmed that it possessed large specific surface area, high pore volume, and strong acid resistant stability. Furthermore, the prepared material containing biphenyl skeleton and a large number of Zr-O bonds, can grasp acid herbicides especially phenoxyacetic acid herbicide s with aromatic structures through π-π interaction, hydrophobic interaction and Zr-O-H + bonds. Based on these advantages, a method was developed for the determination of four phenoxyacetic acid herbicide s from vegetable samples. Under the optimal conditions, wide linearities from 0.3 to 250 μg/L and low limits of detection from 0.1 to 0.5 μg/L were obtained. The intra- and interday relative standard deviations were 1.56-3.92 and 5.01-7.65%, respectively. The proposed method was applied to analyze phenoxyacetic acid herbicide s residues in the tomato, cucumber, and white gourd samples. The satisfactory recoveries (86.12–103.44%) for the spiked samples in vegetable samples were achieved which demonstrated the method was an efficient pretreatment procedure and has a potential application for the trace determination of phenoxyacetic acids from a complex matrix.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Zhen Huang,Minghu Zhao,Chen Wang,Shixing Wang,Linqing Dai,Libo Zhang,Lei Xu
A novel metal organic framework absorbent was synthesized by one step method using 2,2′-dithiodibenzoic acid as organic linker for efficient and selective recovery of Au(III) from aqueous solution. The adsorbent were detected by scanning electron microscope, X-ray diffraction and zeta potential instruments. Its performance was tested by batch experiments. The adsorption isotherm conforms to the Langmuir model, demonstrating that the adsorption process is the uniform monolayer adsorption. The kinetic model is well fitted to the pseudo second-order dynamics model. The maximum adsorption capacity was 1119 mg/g at pH = 2. High temperatures can promote the absorption process. The five adsorption and desorption cycles indicate that the adsorbent has good repeatability for Au(III) adsorption. It could selectively adsorbed Au(III) from wastewater. The adsorption derive from chelation and reduction. The DFT and XPS results show that Au(III) is mainly adsorbed on the adsorbent by coupling with the S atom. These results indicate that it has a high potential to remove Au(III) from industrial wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-13
·
IF 3.8
Bu Daolu,Yang Hu,Zhang Haibo,Wang Liang,Wang Jiao,Liao Jie
The present study investigates the efficacy of newly developed Zr-based metal–organic frameworks, specifically MIP-206, and its amine-modified counterpart, MIP-206-NH 2 , for the re-covery of antimony (Sb) from both synthetic and actual mining wastewater. Batch method studies were employed to examine the effect of waste media pH, Sb concentration, process kinetics, and the performance of the regeneration solution. MIP-206-NH 2 exhibited impressive separation capabilities, achieving 102.18 mg/g and 63.23 mg/g for Sb (V) and Sb (III), respectively. In contrast, the pristine MIP-206 reached maximum values of 26.26 mg/g for Sb (V) and 16.95 mg/g for Sb (III). The separation process was well-described by the Langmuir equation, and the kinetics followed the pseudo-second-order model. Although the amine modification resulted in a decrease in the surface area of MIP-206 from 1345.21 to 1169.86 m 2 /g, SEM and XRD analyses confirmed that the structural integrity of MIP-206-NH 2 remained unchanged. In terms of reusability, MIP-206-NH 2 maintained up to 90% of its separation performance over 9 cycles, while MIP-206 demonstrated effectiveness for 7 cycles. The regeneration solution exhibited a capacity of approximately 0.63 mol/L for Sb (V) and 0.71 mol/L for Sb (III). Furthermore, MIP-206 and MIP-206-NH 2 demonstrated successful application in selectively separating Sb from real mining wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Lijun Liu,Luyang Zuo,Xuejing Zhai,Xiangping Xiao,Huitao Fan,Bo Li,Liya Wang
Photocatalytic water splitting is a commonly used pathway for hydrogen (H 2 ) production, and it is crucial to develop highly active ZnIn 2 S 4 (ZIS)-based photocatalytic systems. In recent years, metal-organic frameworks (MOFs) are also of great interest in the fields of energy production and environmental remediation. Therefore, this study primarily focuses on the fabrication of a series of heterojunction hexagonal prism-shaped Zr-based MOF@ZIS core-shell nanorods through a simple solvothermal method, in which ZIS nanosheets are highly distributed on the surface of the Zr-based MOF (NU-1000). The photocatalytic activities of the resulting materials were evaluated under visible light illumination (λ ≥ 400 nm) by combining different contents of NU-1000 with ZIS. The H 2 evolution results demonstrate that the optimal content of NU-1000 corresponds to a photocatalytic H 2 production rate of 8.53 mmol g −1 h −1 , which is 5.3 times higher than that of pure ZIS. The enhanced photocatalytic activity of the NU-1000@ZIS (NUZ) heterojunction can be attributed to the incorporation of the NU-1000, which provides abundant active sites due to its larger specific surface area. Additionally, the well-matched band structure between the NU-1000 and ZIS is beneficial to efficiently transfer and separate the photogenerated charge carriers. Furthermore, the NUZ core-shell nanorods exhibit excellent stability, offering a new approach for the fabrication of composite photocatalysts by combining MOF-based and ZIS in the field of photocatalytic H 2 production.
研究领域:
材料科学
·
能源科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2017
·
IF 2.323
Xingyu He,Xiaobo Min,Xubiao Luo
The adsorption performance of the amino modification of zirconium metal–organic framework (UiO-66(NH2)) for the removal of antimony (Sb) from aqueous solution has been investigated. The influence of equilibrium concentration, solution pH, temperature, and contact time on the Sb adsorption were investigated by the batch method. Compared with original UiO-66, the UiO-66(NH2) adsorption capacity for Sb(III) and Sb(V) increased to 61.8 mg/g and 105.4 mg/g for Sb(III) and Sb(V), although the surface area of UiO-66(NH2) decreased from 486.31 m2/g to 113.46 m2/g. The adsorption equilibrium data of Sb on UiO-66(NH2) fitted well with the Langmuir adsorption model, and the kinetics data fitted well with the second-order adsorption model. Thermodynamic parameters indicated that adsorption processes of Sb were feasible, endothermic, and spontaneous. The adsorption isotherm parameters indicated that the Sb adsorption data fitted well with the Langmuir model. The mean adsorption energy obtained from the Dubinin–Radushkevich (D–R) isotherm model further revealed that the Sb adsorption process was chemisorption. Additionally, FTIR analysis and X-ray photoelectron spectroscopy (XPS) study revealed that the Zr–O bond and amino group played a significant role in the Sb removal. Thus, UiO-66(NH2) is a promising candidate for Sb contaminated water remediation on the basis of low-cost, easy availability, high Sb adsorption capacity, nontoxicity, and high stability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2018
·Vol. 185
·期 12
·1-8
·
IF 5.705
Lin Haizhu,Chen Hemei,Shao Xi,Deng Chunhui
A zirconium(IV)-based metal organic framework (Zr-MOF) was deposited on polydopamine-coated silica microspheres to form microspheres of type SiO 2 @PDA@Zr-MOF. These were packed into capillary columns for enrichment of phosphopeptides. The column was off-line coupled to both matrix-assisted laser desorption/ionization time of flight mass spectrometry and LC-ESI-MS/MS. The method has a detection limit as low as 4 fmol of β-casein digest and a selectivity as high as 1:1000 (molar ratio of β-casein and BSA digest). It was applied to the analysis of human saliva. In total, 240 endogenous phosphopeptides were identified in only 25 μL human saliva.
A zirconium-based metal organic framework (Zr-MOF) was modified outside of polydopamine-coated silica microspheres to form microspheres named SiO 2 @PDA@Zr-MOF. Then they were packed in capillary columns for selective enrichment of phosphopeptides via interaction between Zr-O clusters and phosphate groups. The pre-concentration resulted in a better detection of phosphopeptides by mass spectrometry. Tris: Tris(hydroxymethyl)aminomethane; DMF: Dimethyl Formamide; Zr-MOF: Zirconium(IV)-organic framework; MOAC: Metal oxide affinity chromatography.
研究领域:
分析化学
·
生物医学
✓ 已验证
DOI
PubMed
高影响因子
Molecular Catalysis
·
2021
·
IF 5.062
Ping Xue,Jiming Huang,Liguang Lin,Rong Li,Mi Tang,Zhengbang Wang
The development of efficient heterogeneous catalysts for fine chemical synthesis is critical for practical applications. Herein, for the first time, the zirconium-based metal-organic framework (UiO-66-NH 2 ) is applied as an efficiently heterogeneous photocatalyst for conversion of benzyl halides to corresponding aldehydes with high selectivity (about 80 %) and conversion (up to 99 %) in the presence of oxygen and DMF as solvent. Through a series of experiments and analysis, the reaction mechanism is proposed to involve nucleophilic attack of the N -oxide. This study provides a general, environmental and high selective method to prepare benzaldehydes and broadens the application fields of UiO-66-NH 2 .
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xiangxiang Wang,Xin Guo,Junwen Qi,Hui Li,Yujun Zhou,Zhigao Zhu,Yue Yang,Jiansheng Li
Efficient capture of radioactive iodine serves as an inevitable demand for secure utilization of nuclear energy, environmental conservation, and human health. In this contribution, a series of iodine adsorbent materials Im@UiO-66 were fabricated by encapsulating imidazole (Im) molecules into the pore of a classical zirconium-based metal–organic frameworks UiO-66, employing a simple and feasible vapor-diffusion strategy. Compared with original UiO-66, the resulting composites achieved a significant enhancement in iodine capture performance. Particularly, Im@UiO-66-3 demonstrated outstanding iodine adsorption performance with capacities of 4.66 g g −1 for vapor and 915 mg g −1 for solution, which were 3.5 and 9.2 times of the original UiO-66, respectively. Moreover, the introduction of nitrogen through ligand encapsulation provided additional sites for iodine immobilization. The primary mechanism underlying this remarkable performance was identified as charge transfer between iodine and imidazole (Im) molecules. The research offers valuable insights for the design of high-efficiency iodine adsorbents.
研究领域:
材料科学
·
环境科学
·
核能技术
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2024
·Vol. 13
·期 17
·2855
·
IF 4.7
Yue Zhou,Yuanyuan Jiang,Xiangyu Chen,Hongchen Long,Mao Zhang,Zili Tang,Yufang He,Lei Zhang,Tao Le
The ratiometric fluorescent probe UiO-OH@Tb, a zirconium-based MOF functionalized with Tb3+, was synthesized using a hydrothermal method. This probe employs the fluorescence resonance energy transfer (FRET) mechanism between Tb3+and malachite green (MG) for the double-inverse signal ratiometric fluorescence detection of MG. The probe’s color shifts from lime green to blue with an increasing concentration of MG. In contrast, the monometallic MOFs’ (UiO-OH) probe shows only blue fluorescence quenching due to the inner filter effect (IFE) after interacting with MG. Additionally, the composite fluorescent probe (UiO-OH@Tb) exhibits superior sensitivity, with a detection limit (LOD) of 0.19 μM, which is significantly lower than that of the monometallic MOFs (25 μM). Moreover, the content of MG can be detected on-site (LOD = 0.94 μM) using the RGB function of smartphones. Hence, the UiO-OH@Tb probe is proven to be an ideal material for MG detection, demonstrating significant practical value in real-world applications.
研究领域:
分析化学
·
环境科学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2024
·
IF 5.9
Muhammad Naveed Afridi,Jingwen Wang,Aziz-Ur-Rahim Bacha,Zulakha Zafar,Syed Taj Ud Din,Muhammad Qasim,Fazal Maula Khan,Chaolin Li
Phosphorous (P) is an indispensable nutrient popularly employed to fertilize agricultural farms. However, its overuse in farming leads to excessive discharge in agricultural runoff, causing eutrophication. To prevent harm to the environment, it is necessary to remove P from wastewater. Adsorption is one of the ways to achieve this goal. In this study, using a solvothermal process, UiO-66-NH 2 was successfully modified/codoped with aluminum (Al) and magnesium (Mg). The Al/Mg-codoped UiO-66-NH 2 was characterized using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The study also investigated various adsorption factors, including temperature, pH, initial phosphate concentration, sorbent dosage, reaction time, and coexisting components. The findings demonstrated that the sorption process was predominantly based on chemical interactions, as evidenced by the Langmuir model (R 2 > 0.99) and pseudo-second order (R 2 > 0.99) analyses that fit well with experimental findings. The sorption capacity value was determined to be 117.6 mg P/g or 360.73 mg PO 4 /g. Thermodynamic results suggested the spontaneous and endothermic nature of P uptake process. Additionally, this research demonstrated the effective utilization of adsorbent for up to six regeneration cycles and recovery of adsorbed P using sodium hydroxide.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Honghao Su,Jingwei Hou,Junyong Zhu,Yatao Zhang,Bart Van der Bruggen
Zr IV -based metal–organic frameworks (MOFs) featuring distinguished water stability, large surface area, and intriguing functionalities have immense potential for practical usage. However, conventional MOF synthesis approaches generally require high reaction temperatures and organic solvents to initiate and template the nucleation and growth, hindering sustainable and cost-effective manufacturing and application of Zr-based MOFs. In this study, a scalable, room-temperature and aqueous synthesis of MOF-808—a Zr-MOF extensively explored as an adsorbent in both academic and industrial sectors—was reported. A rational use of water/formic acid (FA) as a green co-solvent enabled the formation of Zr 6 -cluster in an aqueous phase, thereby facilitating subsequent coordination with H 3 BTC to yield well-crystallized MOF-808. The effects of the water/FA volume ratio, the total solvent volume, and reaction time on the physicochemical properties of MOF-808 were studied. The optimized synthesis conditions (FA/water = 2.7:8.1, and reaction time = 24 h) resulted in the synthesis of MOF-808 with good hydrophilicity, excellent stability, high surface area, and weak positive charges. Moreover, this synthesis approach was successfully upscaled, yielding 11.5 g of MOF-808 at a magnification factor of 48. Notably, MOF-808-V 10.8 exhibited an impressive adsorption capacity for Congo Red (ca. 1500 mg/g) and demonstrated selective fractionation of dye mixtures, suggesting their potential application in dye wastewater treatment. This methodology is expected to provide guidance for aqueous and scalable fabrication of Zr-MOFs towards water-related environmental applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）