SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9
Yu Zhang,Cuiyu Huang,Qiao Hu,Jingjing Hui,Xiwen He,Langxing Chen,Yukui Zhang
Fluoroquinolones residues pose direct threats to the ecological system and human health, hence it is important to effectively remove them from aqueous environment. In this work, a composite of bimetallic ZnCo-metal organic framework (MOF) functionalized electrospun polyacrylonitrile (PAN) nanofibers (ZnCoMOF@PAN) was prepared using room-temperature in situ growth approach for efficient adsorption of ciprofloxacin (CIP). The ZnCoMOF@PAN revealed well-defined crystallinity and exceptional BET surface area (1267.87 m 2 /g). The systematic adsorption studies (kinetics, isotherms, and thermodynamics) showed that the CIP adsorption process was spontaneous and the adsorption isotherms obeyed the Freundlich model, and the pseudo-second-order kinetics model could be well fitted to the adsorption behavior. Remarkably, the maximum adsorption capacity of ZnCoMOF@PAN to CIP can reach 872.32 mg/g, which is significantly higher than that of other reported adsorbents. In addition, the adsorption of CIP onto ZnCoMOF@PAN was dominated by a synergistic effect of multiple interactions: electrostatic attraction, hydrogen bonding, complexation, π-π stacking, and hydrophobic effects. Furthermore, the composite exhibited excellent adsorption selectivity, maintaining over 90% removal efficiency for CIP in various real water matrices. After 5 consecutive adsorption-desorption cycles, it still retained more than 90% of its original removal efficiency, demonstrating great potential for practical application in wastewater treatment.
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Journal of Cleaner Production
·
2023
·
IF 11.1
Nan Li,Lanlan Huo,Wenjing Shen,Chenghong Qiang,Mianmian Wu,Guifang Sun,Qingfei Li,Minghao Shi,Jiangquan Ma
Environmental pollution and energy shortage are key problems restricting human and social development. Finding a way to effectively adsorb organic pollutants in wastewater is of great significance for environmental protection. Here, we reasonably design and prepare three novel porous organic polymers with different ratios m-terphenyl (POP-Ts) by Friedel-Crafts alkylation as excellent adsorbents, named POP-T (1:1), POP-T (1:1.5) and POP-T (1:2), respectively. Notably, the proportion of m-terphenyl and biphenyl dichlorobenzyl was optimized for the first time to obtain POPs adsorbents for removal of pollutants from water. Specially, the adsorption experiments showed that POP-T (1:1.5) has excellent adsorption performance of rhodamine B (RhB), methylene blue (MB) and diclofenac (DCF), and the maximum adsorption of POP-T (1:1.5) is 1414.4 mg/g, 1256.6 mg/g and 1028.9 mg/g, respectively. The kinetic data and isothermal data were well fit with the pseudo 2nd order model and Langmuir model, respectively. Moreover, all POP-Ts exhibit excellent stability and the adsorption efficiency is still over 90% after four cycles. Overall, the superefficient adsorption performance is attributed to the hydrophobicity property, large specific surface area (1416 m 2 /g) and porosity of the POP-T (1:1.5) material.
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JOURNAL OF CHROMATOGRAPHY A
·
2023
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IF 4.1
Zhentao Li,Zhengzheng Liao,Jinfang Hu,Zilin Chen
Design of the smart stationary phases, which can improve the separation efficiency is an essential work in the capillary electrochromatography (CEC). Owing to good excellent properties, covalent organic frameworks (COFs) have showed promising potential in the area of separation science . Here, a micro- and mesoporous COF TAPB-BTCA with adequate available interaction sites and outstanding mass transfer performance was first exploited as a stationary phase for high-efficiency in capillary electrochromatography. Through in situ growth approach, the COF TAPB-BTCA coated capillary column was facilely prepared at room temperature . The separation ability of the COF TAPB-BTCA coated capillary column was studied. The fabricated column showed high efficiency for the separation of six types of small molecular compounds, including alkylbenzenes , chlorobenzenes , phenols, parabens , vanillin and related phenolic compounds , and non-steroidal anti-inflammatory drugs (NSAIDs). The maximum theoretical plates reached up to 293,363 N/m for phloroglucinol , showing significantly improved column efficiency in comparison to previous reported COFs-based columns. In addition, the mass loadability for methylbenzene was achieved to 1.44 mg/mL. Also, excellent reproducibility and stability were obtained on the COF TAPB-BTCA coated columns. The relative standard deviations of intra-day ( n = 3), inter-day ( n = 3) and three batch tubes were all less than 2%, and no obvious change was presented in separation performance after the column was used 120 runs. This COF TAPB-BTCA-based stationary phase would be a promising candidate for high-efficiency chromatographic separation.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jing Chen,Chunyang Bao,Mengshi Chen,Yan Wang,Xiaoling Xu,Tao Yang,Cenyao Shang,Qiang Zhang
The design of highly rapid and efficient cross-linked polymer materials is essential for developing adsorption of pollutant methods based on cyclodextrin to replace currently used slow trapping activated carbons. It is rarely possible to achieve rapid and complete adsorption at high concentrations, even though available adsorbents have developed high adsorption capacity. Herein, a beta-cyclodextrin cross-linked poly(ionic liquid) adsorbents (CD-PILs), was facilely fabricated through one-pot radical polymerization for fast, high-capacity and selective removal of pollutants from water, including organic dyes, pharmaceutical and personal care products, heavy metal ions as well as microbial contamination. It could be completely removed from water within a short period ranging from seconds to minutes at a wide range of high-load anionic dyes (1 mM). Theoretical maximum adsorption capacity of CD-PILs for CR, MO, DS, SD, K 2 Cr 2 O 7 , and CA is 2058.2, 1338.6, 903.7, 1661.4, 878.2, and 343.6 mg/g, respectively. The adsorption rate of ionic CD-PILs superior than those of most of reported synthetic adsorbent materials with the highest adsorption capacity so far, especially for heavy metals. Moreover, after being regenerated five times, the water-remediation performance of CD-PILs remained almost the same as fresh ones, demonstrating the great potential of CD-PILs in industrial water remediation.
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JOURNAL OF FOOD SCIENCE
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2023
·Vol. 88
·期 5
·2009-2022
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IF 3.9
Wenying Zou,Junjun Wang,Siyi Yang,Yue Tang,Xiaojuan Niu,Yuangen Wu
Most colorimetric methods based on nanozymes need to have excellent performance under acidic condition, so they are currently facing some challenges in the field of food hazard detection. Herein, a facile and rapid colorimetric sensor for kanamycin (KAN) detection in foods under neutral condition has been designed using the peroxidase-mimic activity of porous nanozyme like Co 3 O 4 nanodisk. Further investigations showed that the interaction mechanism between porous Co 3 O 4 nanodisk and substrates belongs to a ping–pong model, and the inhibition type of KAN on the peroxidase-mimic activity is noncompetitive inhibition. The constructed sensor has good sensitivity for KAN with the limit of 57 nM, and the color changes can be discerned visually when KAN exceeds 0.5 µM. Besides, the colorimetric sensor obtains excellent recovery results in chicken serum, milk, honey, and pork, which shows that the proposed sensing strategy can provide a rapid and convenient detection method for KAN in foods under neutral condition. Practical Application The established sensing strategy can rapidly distinguish whether KAN residue exceeds the permissible level within 10 min, which meets the requirement for on-site monitoring of antibiotics in foods, and also open up a new idea for other hazards detection under neutral condition.
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JOURNAL OF HAZARDOUS MATERIALS
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2023
·
IF 13.6
Liwei Yang,Fashan Yang,Heng Zhang,Hongyu Zhou,Mengfan Luo,Yunmei Liu,Chuanliang Zhao,Lu Zheng,Bo Lai
At present, the potential mechanism of manganese oxide (MnO 2 ) activation of PI and the key active sites of PI activation are still unclear and controversial. To this end, three different crystal forms of MnO 2 were prepared in this study and used to activate PI to degrade pollutants. The results showed that different crystal types of MnO 2 showed different catalytic abilities, and the order was γ-MnO 2 > α-MnO 2 > β-MnO 2 . Through quenching experiments, EPR tests, Raman experiments and in situ electrochemical experiments, it has been confirmed that electron transfer-mediated non-free radical process is the main mechanism of pollutant degradation , in which the active substance is the highly active metastable intermediate complex (MnO 2 /PI*). Hydroxyl radical (HO • ), superoxide radical (O 2 •− ), singlet oxygen ( 1 O 2 ) and iodine radical (IO 3 • ) did not participate in pollutant degradation. The quantitative structure-activity relationship analysis confirmed that the catalytic performance of MnO 2 was highly positively correlated with the surface Mn(IV) content, which indicated that the surface Mn(IV) site was the main active site. Overall, this study will be of great help to the design and application of manganese dioxide activation for periodate degradation of pollutants.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2023
·Vol. 24
·期 10
·9055
·
IF 5.6
Qianli Li,Yi Hou,Pinyin Cao,Ruiye Bi,Songsong Zhu
The treatments generally employed for temporomandibular joint osteoarthritis (TMJOA) involve physical therapy and chemotherapy, etc., whose therapeutic efficacies are impaired by the side effects and suboptimal stimulus responsiveness. Although the intra-articular drug delivery system (DDS) has shown effectiveness in addressing osteoarthritis, there is currently little reported research regarding the use of stimuli-responsive DDS in managing TMJOA. Herein, we prepared a novel near-infrared (NIR) light-sensitive DDS (DS-TD/MPDA) by using mesoporous polydopamine nanospheres (MPDA) as NIR responders and drug carriers; diclofenac sodium (DS) as the anti-inflammatory medication; and 1-tetradecanol (TD) with a phase-inversion temperature of 39 °C as the drug administrator. Upon exposure to 808 nm NIR laser, DS-TD/MPDA could raise the temperature up to the melting point of TD through photothermal conversion, and intelligently trigger DS release. The resultant nanospheres exhibited an excellent photothermal effect and effectively controlled the release of DS through laser irradiation to accommodate the multifunctional therapeutic effect. More importantly, the biological evaluation of DS-TD/MPDA for TMJOA treatment was also performed for the first time. The experiments’ results demonstrated that DS-TD/MPDA displayed a good biocompatibility in vitro and in vivo during metabolism. After injection into the TMJ of rats afflicted with TMJOA induced by unilateral anterior crossbite for 14 days, DS-TD/MPDA could alleviate the deterioration of TMJ cartilage, thus ameliorating osteoarthritis. Therefore, DS-TD/MPDA could be a promising candidate for photothermal-chemotherapy for TMJOA.Keywords:mesoporous polydopamine;drug release system;NIR laser-responsive;controlled release;temporomandibular joint osteoarthritis
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JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Can Feng,Heng Zhang,Yi Ren,Mengfan Luo,Siying Yu,Zhaokun Xiong,Yang Liu,Peng Zhou,Bo Lai
Zerovalent iron (ZVI)-based Fenton-like processes have been widely applied in degrading organic contaminants . However, the surface oxyhydroxide passivation layer produced during the preparation and oxidation of ZVI hinders its dissolution and Fe(III)/Fe(II) cycling, and restricts the generation of reactive oxygen species (ROS). In this study, copper sulfide (CuS) was found to effectively enhance the degradation of diverse organic pollutants in the ZVI/H 2 O 2 system. Moreover, the degradation performance for the actual industrial wastewater (i.e., dinitrodiazophenol wastewater) in the ZVI/H 2 O 2 system was impressively improved by 41% with CuS addition, and the COD removal efficiency could reach 97% after 2 h of treatment. Mechanism investigation revealed that the introduction of CuS accelerated the sustainable supply of Fe(II) in the ZVI/H 2 O 2 system. Specifically, Cu(I) and reductive sulfur species (i.e., S 2– , S 2 2– , S n 2– and H 2 S (aq)) from CuS directly induced efficient Fe(III)/Fe(II) cycling. The iron-copper synergistic effect between Cu(II) from CuS and ZVI expedited Fe(II) generation from ZVI dissolution and Fe(III) reduction by formed Cu(I). This study not only elucidates the promotion effects of CuS on ZVI dissolution and Fe(III)/Fe(II) cycling in ZVI-based Fenton-like processes, but also provides a sustainable and high-efficiency iron-based oxidation system for removal of organic contaminants.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Junjing Li,Yu Wang,Bin Zhao,Jing Ding,Jun Zhang,Menghua Yin,Zhaohui Zhang,Shumin Ma,Yaqian Liu,Zilin Tan,Hongwei Zhang,Liang Wang,Dionysios D. Dionysiou
In this work, a nickel-cobalt bimetallic organic framework (NiCo-MOF) was introduced as an intermediate layer to synthesize a Pd/NiCo-MOF/Nickel foam composite electrode, which was applied for electrocatalytic hydrodechlorination (ECH) of chlorinated pharmaceuticals and personal care products (PPCPs). The introduction of the NiCo-MOF structure dramatically improved the catalytic activity compared with the common Pd/Nickel foam electrode. Combined with transmission electron microscope and X-ray absorption fine structure analysis, catalyst on Pd/NiCo-MOF/Nickel foam surface had smaller particle size. The removal of the Pd/NiCo-MOF/Nickel foam electrode for chloramphenicol (CAP) reached more than 95 % at 40 min, while the removal of the Pd/Nickel foam electrode was only approximately 55 %. In this study, the active atomic hydrogen (H*) adsorbed on the Pd and NiCo-MOF structures is the critical active species to remove chlorinated PPCPs by Pd/NiCo-MOF/Nickel foam electrode. Density functional theory (DFT) was used to calculate and investigate the adsorption strength of the composite electrode structure for CAP, the product and H*. This work provided a new method to achieve higher catalytic performance and reactivity operability and longevity of catalytic materials through the synergism of a NiCo-MOF interlayer with Pd particles.
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Environmental Science and Ecotechnology
·
2023
·
IF 12.6
Wei Wang,Minjuan Gong,Donghai Zhu,Mohammadtaghi Vakili,Zahra Gholami,Huanhuan Jiang,Shuangxi Zhou,Han Qu
Various materials have been developed for environmental remediation of mercury ion pollution. Among these materials, covalent organic frameworks (COFs) can efficiently adsorb Hg(II) from water. Herein, two thiol-modified COFs (COF-S-SH and COF-OH-SH) were prepared, through the reaction between 2,5-divinylterephthalaldehyde and 1,3,5-tris-(4-aminophenyl)benzene, followed by post-synthetic modification using bis(2-mercaptoethyl) sulfide and dithiothreitol, respectively. The modified COFs showed excellent Hg(II) adsorption abilities with maximum adsorption capacities of 586.3 and 535.5 mg g −1 for COF-S-SH and COF-OH-SH, respectively. The prepared materials showed excellent selective absorbability for Hg(II) against multiple cationic metals in water. Unexpectedly, the experimental data showed that both co-existing toxic anionic diclofenac sodium (DCF) and Hg(II) performed positive effect for capturing another pollutant by these two modified COFs. Thus, a synergistic adsorption mechanism between Hg(II) and DCF on COFs was proposed. Moreover, density functional theory calculations revealed that synergistic adsorption occurred between Hg(II) and DCF, which resulted in a significant reduction in the adsorption system's energy. This work highlights a new direction for application of COFs to simultaneous removal of heavy metals and co-existing organic pollutants from water.
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Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Min Tao,Jian Zhang,Jiliang Lv,Jiaquan Zhang,Yuxiao Li,Shan Liu,Wensheng Xiao,Ying Huang,Han Zheng
Surface oxidized pyrite (SOPy-90) was synthesized via calcination and showed much higher catalytic ability for sulfite than the pristine pyrite to degrade atrazine (ATZ). The impacts of SOPy-90 dosage, sulfite doses, and dissolved O 2 on the ATZ elimination by SOPy-90/sulfite system were studied. Furthermore, β-FeOOH was generated on the surface of oxidized pyrite, which played a significant role in the catalysis of sulfite by SOPy-90. The reaction pH (4.0–7.0) was acidified to 4 by adding SOPy-90, which was beneficial for the sulfite activation by both material and dissolved Fe 2+ to produce SO 3 •− . The generated SO 3 •− was further oxidized by dissolved O 2 to form SO 4 •− as the predominant species, confirmed by the quenching experiments and EPR analysis. Besides, the Fe(II)/Fe(III) cycle was accelerated by the low-valent S(−II) on the SOPy-90 surface, thus enhancing the SOPy-90 catalysis capacity. The density functional theory (DFT) calculations revealed that Fe(II) was more likely to activate HSO 3 − to generate SO 3 •− on the SOPy-90 surface. The SOPy-90/sulfite system has good reusability and showed excellent performance to decompose ATZ in real water treatment .
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Bing Liu,Xia Zhang,Jialong Chu,Fei Li,Caixia Jin,Jing Fan
Co-catalysts can achieve efficient separation of photogenerated carriers and are considered as a promising strategy for solar photocatalytic removal of pollutants. Herein, we reported the synthesis of nanocomposite of BiOIO 3 /Ti 3 C 2 MXene combining two dimensional 2D BiOIO 3 with 2D Ti 3 C 2 MXene co-catalyst. The few-layered 2D Ti 3 C 2 MXene provided more adsorption and reaction sites. Furthermore, the synergism of intimate interfacial contact between the two 2D nanosheets and robust metallic electrical conductivity of Ti 3 C 2 MXene significantly accelerated the separation and migration of photogenerated charge carriers. A variety of organic pollutants were proved to be effectively degraded by 2D/2D BiOIO 3 /Ti 3 C 2 MXene composites. The degradation efficiencies followed the order tetracycline hydrochloride (93.4 %) > diclofenac sodium (87.6 %) > levofloxacin hydrochloride (77.4 %) > 4-nitrophenol (43.3%). Besides, the satisfactory recycling and stability of BiOIO 3 /Ti 3 C 2 MXene for the degradation of organic pollutants in water under solar irradiation predicted its good prospect for practical applications.
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