INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2024
·Vol. 25
·期 18
·9855
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IF 4.9
Yiting Luo,Rongkui Su
Tetracycline’s accumulation in the environment poses threats to human health and the ecological balance, necessitating efficient and rapid removal methods. Novel porous metal–organic framework (MOF) materials have garnered significant attention in academia due to their distinctive characteristics. This paper focuses on studying the adsorption and removal performance of amino-modified MIL-101(Fe) materials towards tetracycline, along with their adsorption mechanisms. The main research objectives and conclusions are as follows: (1) NH2-MIL-101(Fe) MOF materials were successfully synthesized via the solvothermal method, confirmed through various characterization techniques including XRD, FT-IR, SEM, EDS, XPS, BET, and TGA. (2) NH2-MIL-101(Fe) exhibited a 40% enhancement in tetracycline adsorption performance compared to MIL-101(Fe), primarily through chemical adsorption following pseudo-second-order kinetics. The adsorption process conformed well to Freundlich isotherm models, indicating multilayer and heterogeneous adsorption characteristics. Thermodynamic analysis revealed the adsorption process as a spontaneous endothermic reaction. (3) An increased adsorbent dosage and temperature correspondingly improved NH2-MIL-101(Fe)’s adsorption efficiency, with optimal performance observed under neutral pH conditions. These findings provide new strategies for the effective removal of tetracycline from the environment, thus holding significant implications for environmental protection.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Bao-Lin Zhang,Wei Qiu,Pan-Pan Wang,Yu-Lei Liu,Jing Zou,Lu Wang,Jun Ma
This study examined the effects of two kinds of iron-trimesic metal-organic frameworks (MOFs) [MIL-100(Fe) and Fe-BTC] on adsorption of Pb(II) and Cd(II). For both materials, adsorption of Pb and Cd nearly approached equilibriums in the initial 2 min with high pseudo-second-order kinetics rate constants (0.895 g·mg −1 ·min −1 for Pb and 1.416 g·mg −1 ·min −1 for Cd). Both materials showed better adsorption performance with the increase of solution pH (from 2 to 7). Adsorption processes were endothermic, entropy-increased and spontaneous. The higher enthalpy change ( Δ H 0 ) and entropy change ( Δ S 0 ) values for Cd adsorption reflected the more difficult adsorption of Cd compared with Pb, which is related with more negative hydration enthalpy ( Δ H hyd Θ ) and larger ionic radius of Cd. Multilayer adsorption phenomena appeared with no maximum adsorptive capacity observed. Both Langmuir-Freundlich and Freundlich-BET models could well describe isotherms. Multilayer adsorption may be attributed to the formation of inner-sphere complexation and outer-sphere complexation. Bockris-Devanathan-Muller (BDM) electrical double layer theory was used for illustrating adsorption mechanism. The fixed-bed adsorption experiments with Fe-BTC showed outstanding elimination performance in initial operating period (>99.8% for Pb and >99.6% for Cd), with effective filtration volume of 980 mL for Pb and 300 mL for Cd. Recyclability test showed that Fe-BTC could be well regenerated by ethylenediamine tetraacetic acid disodium salt (EDTA-2Na). This study showed that MIL-100(Fe) and Fe-BTC are potential for practical heavy metal removal applications.
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
BULLETIN OF MATERIALS SCIENCE
·
2018
·Vol. 41
·期 6
·1-7
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IF 0.925
Chen Huajun,Yang Gangbin,Ding Wuxiu
In view of the compatibility between carriers of antimicrobial agents and ceramic glaze, mesoporous alumina was employed as the carrier of silver ions and silver-loaded mesoporous alumina was synthesized by hydrothermal and adsorption methods. The liquid medium microdilution method and the spread plate methods were studied to evaluate antimicrobial efficiency of silver-loaded mesoporous alumina. \(\hbox {N}_{2}\) adsorption/desorption, HRTEM images and low-angle X-ray diffraction experiment prove the existence of fine mesoporous structure of mesoporous alumina and silver-loaded mesoporous alumina. The chelation of ammonia can improve the adsorption capacity of silver nitrate on mesoporous alumina and adsorption capacity increases by 18 times in the presence of ammonia. The adsorption behaviour of silver nitrate can be described by a multilayer adsorption isotherm of BET and the adsorption principle of silver nitrate on mesoporous alumina is multilayer adsorption in the presence of ammonia. The surface area, pore volume and pore-size distribution of silver-loaded mesoporous alumina are obviously smaller than those of mesoporous alumina due to the blockage of channel by silver-ammonia complex. The antibacterial test results indicate that silver-loaded mesoporous alumina have favourable antibiotic property and MIC \(\le \) 240 \(\upmu \hbox {g}\) \(\hbox {ml}^{-1}\) against Escherichia coli , Staphylococcus aureus and Salmonella . The diameter of inhibition zone of silver-loaded mesoporous alumina is 26 mm against Escherichia coli , 24 mm against Staphylococcus aureus and 22 mm against Salmonella enterica .
研究领域:
材料科学
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微生物学
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DOI
高影响因子
Green Processing and Synthesis
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2023
·Vol. 12
·期 1
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IF 4.3
Qinhui Ren,Yufu Ma,Fuhua Wei,Lan Qin,Hongliang Chen,Zhao Liang,Siyuan Wang
Zr-metal-organic frameworks (Zr-MOFs) were prepared by a solvothermal method and characterized by X-ray diffraction, scanning electron microscopy, and thermogravimetry. Zr-MOFs were used to remove doxycycline hydrochloride (DOC) from wastewater. According to the experimental results, the maximum adsorption capacity of DOC by Zr-MOFs within 5 h was 148.7 mg·g −1 . From the pseudo-second-order kinetics model, all R
2 values were greater than 0.99, which proved that the adsorption of DOC by Zr-MOFs was consistent with practice. According to the Freundlich isotherm model, the adsorption of DOC by Zr-MOFs proceeded via multilayer adsorption. The aforementioned results show that Zr-MOFs have good application prospects for removing DOC from wastewater.
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
ANALYTICA CHIMICA ACTA
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2021
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IF 6.558
Kai Hu,Tiantian Pang,Yanmei Shi,Pengzhao Han,Yuanqing Zhao,Wenjie Zhao,Huahui Zeng,Shusheng Zhang,Zhenqiang Zhang
A novel magnetic borate-modified MXene composite was prepared by in situ growth of Fe 3 O 4 particles onto the surface of phenylboronic acid modified Ti 3 C 2 T x nanosheets . The magnetic composite possesses highly selective recognition properties to catecholamines , and high adsorption capacity (up to 319.6 μmol g −1 ) for dopamine. Besides, the adsorption of urinary catecholamines can be accomplished within 2.0 min. The excellent adsorption performance can be assigned to its unique 2D layered structures, which helps to shorten the diffusion path and facilitate molecular transport. In addition, the multilayer adsorption and the synergetic interactions of borate affinity, van der Waals forces , hydrogen bonding and π-π stacking also contribute to the adsorption. By coupling the magnetic boronate affinity composites with high-performance liquid chromatography-fluorescence detection, a sensitive method for the determination of catecholamines in urine samples was proposed. The validation results revealed it can offer good linearities (correlation coefficients higher than 99%). The method detection limits were 0.06, 0.16, 0.03 and 0.14 ng mL −1 for norepinephrine , epinephrine, dopamine and isoprenaline , respectively, and relative recoveries for these catecholamines were in the range of 98.56–108.1%, 92.56–110.0%, 98.79–112.3% and 88.14–97.81%, respectively. The proposed method was successfully applied to analyze the catecholamines in the urine samples from 15 healthy volunteers and 16 patients with Alzheimer's disease. The results indicated that the magnetic borate-modified Mxene composite possesses superior extraction performance, and can be used as an outstanding candidate for the extraction of catecholamines in pre-clinical or clinical studies.
研究领域:
分析化学
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医学诊断
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材料科学
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DOI
PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
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2023
·Vol. 37
·期 9
·e7212
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IF 3.9
Fuhua Wei,Meng Nie,Qinhui Ren,Xiang Yu,Hua Li,Hongliang Chen,Mengting He,Zhao Liang,Siyuan Wang,Dongxue Han
This work studies the use of Cu/Co-MOFs for the removal of doxycycline hydrochloride (DOC) in wastewater. Cu/Co-MOFs were prepared using a solvothermal method and characterized by XRD, SEM, and TG. According to the experimental results, the maximum DOC adsorption capacity of Cu/Co-MOFs within 5 h was 268.5 mg/g. The pseudo-second-order (PSO) kinetic model shows that the R 2 are all greater than 0.99, which proves that the theory DOC adsorption by Cu/Co-MOFs is consistent with practice. According to the Freundlich isotherm model, the adsorption of DOC by Cu/Co-MOFs is a multilayer adsorption. Thus, the results show that Cu/Co-MOFs have practical application value in removing DOC.
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
FOOD CHEMISTRY
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2024
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IF 8.5
Qiyue Zhao,Hong-Man Hou,Gong-Liang Zhang,Hongshun Hao,Bei-wei Zhu,Jingran Bi
Heterocyclic aromatic amines (HAAs), arising as chemical derivatives during the high-temperature culinary treatment of proteinaceous comestibles, exhibit notable carcinogenic potential. In this paper, a composite aerogel (AG D-UiO-66 ) with high-capacity and fast adsorption of HAAs was made with anchoring defective UiO-66 (D-UiO-66) mediated by lauric acid on the backbone of cellulose nanofibers (CNF). AG D-UiO-66 with hierarchical porosity reduced the mass transfer efficiency for the adsorption of HAAs and achieved high adsorption amount (0.84–1.05 μmol/g) and fast adsorption (15 min). The isothermal adsorption model demonstrated that AG D-UiO-66 belonged to a multilayer adsorption mechanism for HAAs. Furthermore, AG D-UiO-66 was successfully used to adsorb 12 HAAs in different food (roasted beef, roasted pork, roasted salmon and marinade) with high recoveries of 94.65%–104.43%. The intrinsic potential of AG D-UiO-66 demonstrated that it could be widely applicable to the adsorption of HAAs in foods.
研究领域:
食品科学
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材料科学
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环境科学
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2019
·Vol. 43
·期 14
·5603-5610
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IF 3.069
Ning Wei,Xudong Zheng,Hongxiang Ou,Peilin Yu,Qiao Li,Shanshan Feng
Metal–organic framework (MOF) materials are a class of hybrid organic–inorganic supramolecular materials. Owing to their highest specific surface area, lowest crystal density and adjustable pore size and functional structure, MOF materials have the potential for some special applications in the field of adsorption of heavy metal contaminants. However, it is difficult to collect and reuse them in adsorption separation because of their nanometer size. Therefore, graphene oxide (GO) with good film-forming properties is used. In this paper, an f-ZIF-8@GO composite membrane material was developed by using GO and a zeolitic imidazolate framework (ZIF-8) material and was modified with 3-aminopropyl-triethoxysilane (APTES) by amine functionalization. After a series of structural characterizations, it was applied to the adsorption of copper ions in water and its adsorption properties were tested. The results showed that the adsorption capacity at pH = 6.0 was the largest, and an increase in temperature was not conducive to the adsorption reaction. The adsorption data were fitted to the Freundlich equation and the quasi-second order kinetic equation. The adsorption of Cu2+ on water was multilayer, and the equilibrium adsorption capacity was up to 1872.24 mg g−1. The prepared materials exhibited high selectivity to copper ions; they could be reused as adsorbents for many times and maintained high adsorption capacity. This kind of material is of great significance for the adsorption and separation of heavy metal ions in water.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Hongyu Cen,Yijian Gao,Shasha He,Zhuo Peng,Chonggang Wu,Zhenyu Chen
The self-discharge by corrosion of zinc-air batteries (ZABs) will result in the reduced coulombic efficiency and lower energy efficiency. The additives in electrolyte should not only inhibit the occurrence of self-corrosion during battery dormancy, but also achieve a stable cycle of adsorption–desorption during battery operation, improving the durability of discharge cycles. But the former requires strong binding between additives and zinc to form a dense protective film, while the latter requires easy desorption of additives and zinc without affecting discharge power, which is contradictory to balance. In this study, a dynamic combination of additives and zinc, as well as a design of multi-channel strategy for the corresponding protective layer, have been proposed to solve the issues of self-corrosion and discharge cycle stability. Specifically, the surfactant (octylphenol polyoxyethylene ether phosphate (OP-10P)) and 1,10-decanedithiol (DD) have been selected as the combined anti-corrosion additives in ZABs with concentrated alkaline solution. The synergistic inhibition mechanism and the stabilization mechanism in zinc-air full cells have been studied systematically. The results indicated that the combined inhibitors inhibited the self-corrosion of Zn efficiently in the dormancy, and the inhibition efficiency reached 99.9 % at the optimized proportion. OP-10P achieve the preferential adsorption on the zinc surface, and then the chelates of DD with Zn 2+ deposit on the outer layer to form the protective film with fine hydrophobic performance. The stability of ZABs in discharge and charging cycles has been improved owing to the multilayer adsorption film on zinc surface, which retains ion transport channels with the homogeneously pores to weaken the dendrites and side reactions during galvanostatic cycles. A probable model on zinc surface was established to discuss the actual working mechanism.
研究领域:
电化学
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材料科学
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DOI
PubMed
高影响因子
Biomass Conversion and Biorefinery
·
2021
·Vol. 13
·期 9
·8277-8286
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IF 4.987
Wang Dongmei,Luo Weiye,Zhu Jingyi,Wang Tengfei,Gong Zhengjun,Fan Meikun
In this study, a novel alkali-modified biochar prepared from ginkgo leaves was produced by simply one-step pyrolysis and was investigated as an adsorbent for the removal of Pb, Cd, and Cu from aqueous solutions. After modified by alkali, ginkgo leaves biochar exhibited abundant surface functional groups and large porosity, resulting in high adsorption capacities for Pb (589.32 mg·g −1 ), Cd (563.55 mg·g −1 ), and Cu (81.7 mg·g −1 ). Simulation results showed that pseudo-second-order model and Langmuir model were better fitted to analyze the heavy metals adsorption process by alkali-BC, indicating that multilayer adsorption was the main reason for heavy metals removal. Besides, effect of pH and coexisting cations on adsorption of Pb, Cd, and Cu by alkali-BC was studied. Moreover, competitive adsorption of the three heavy metal ions by alkali-BC in binary system was also explored. Finally, the removal mechanism of Pb, Cd, and Cu in aqueous solution was analyzed and summarized. Due to the good performance in a wider pH range and high absorption capacity, alkali-BC would be an efficient adsorbent for heavy metals in real environmental samples.
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
International Journal of Environmental Science and Technology
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2021
·Vol. 18
·期 12
·3871-3882
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IF 2.86
Wang X.,Huang F.,Yu M.,Zhang C.,Ding F.,Chen L.,Chen H.
The coal tar-based carbon with ultra-high specific surface area was synthesized from coal tar using CaO as template coupled with KOH activation by conventional heating. To utilize the existing pores of the porous carbon, the multilayer adsorption of organic dyes, including Congo red and methylene blue, was tested. Results show that the as-made carbon features with hierarchical structure, which is containing both micropores and abundant mesopores. The CTC 4-900 made with the mass ratio of activator/carbon source at 4 under activation temperature of 900 °C shows an ultra-high specific surface area of 3101 m 2 /g with an average of 2.65 nm. The CTC 4-900 had the highest adsorption capacity for Congo red with the saturation adsorption capacity of 3885 mg/g in a monolayer adsorption due to its large mesoporous surface area. Then, the CTC 4-900 -CR can be used for an effective second-layer adsorption for methylene blue with the saturation adsorption capacity of 931 mg/g. For the third-layer adsorption of Congo red, the CTC 4-900 -CR-MB still shows the excellent adsorption performance with the saturation adsorption capacity of 1001 mg/g due to the electrostatic forces. After several layer adsorptions for different organic dyes, the existing pores of the carbon can be utilized completely, showing that it is an alternative way to regeneration.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Senwei Jiang,Hangzhen Lan,Zhen Wu,Daodong Pan,Yichun Wu
This study focuses on the synthesis, characterization, and adsorption performance of a series of UiO-66-based materials for the adsorption of alkylphenols such as bisphenol A (BPA), 4-butylphenol (4-BP), and 4-pentylphenol (PP). The UiO-66 series, including UiO-66-NH 2 –50 %, mesoporous UiO-66 (HCl‑meso-UiO-66), and 4-pentylbenzoic acid-modified 4‑meso-UiO-66, were prepared through a combination of thermal and chemical modifications. Transmission electron microscopy analyses confirmed the successful creation of mesoporous structures, while FT-IR and XPS spectroscopy validated the chemical modifications. The adsorption performance was evaluated through kinetic and isotherm studies, employing pseudo-first-order and pseudo-second-order models as well as Langmuir and Freundlich isotherm models. The results indicated rapid initial adsorption rates, with equilibrium reached within 40 min. The pseudo-second-order model provided the best fit for the kinetic data, while the Freundlich model better described the adsorption behavior for 4-BP and PP, suggesting multilayer adsorption on heterogeneous sites. Thermodynamic studies indicated that 4-BP adsorption is endothermic and non-spontaneous, while BPA and PP adsorption exhibited exothermic and spontaneous characteristics. The study also explored the adsorption mechanisms, highlighting the importance of hydrophobic interactions and size-exclusion effect in the adsorption process. Hydrogen bonding and π-π stacking, although present, was not the primary determinant. The findings underscore the potential of 4‑meso-UiO-66, which exhibited the highest adsorption capacity, particularly for PP, driven by its enhanced pore accessibility, despite a smaller surface area compared to UiO-66-NH 2 –50 %, and hydrophobicity. This work provides valuable insights into the design of efficient adsorbents for alkylphenols enrichment and separation.
研究领域:
环境科学
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材料化学
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吸附技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）