ANALYTICA CHIMICA ACTA
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2024
·
IF 5.7
Bohan Wang,Lanhua Liu,Haopeng Zhang,Zhiqiang Wang,Kang Chen,Bo Wu,Limin Hu,Xiaohong Zhou,Lanlan Liu
Background Quinolones (QNs) widely exist in the environment due to their wide range of applications and poor metabolic properties, resulting in the generation and spread of resistance genes, posing a potential threat to human health. Traditional analytical methods cannot detect all broad ranges of QNs simultaneously. The development of facile, efficient and reliable method for quantification and assessment of the total QNs is a long-lasting challenge. Results We hereby provide a simple, sensitive and instantaneous group-targeting biosensor for the detection of total QNs in environmental water samples. The biosensor is based on a group-specific antibodies with high affinity against QNs. Fluorescent labeled antibodies bound to the coated antigen modified on the surface of the transducer, and excited by the evanescent waves. The detected fluorescent signal is inversely proportional to the QNs concentration. This biosensor exhibited excellent performance with detection limits lower than 0.15 μg L −1 for all five QNs variants, and even lower than 0.075 μg L −1 for ciprofloxacin (CIP) and ofloxacin (OFL). Environmental water samples can be detected after simple pretreatment, and all detection steps can be completed in 10 min. The transducer has a high regenerative capacity and shows no significant signal degradation after two hundred detection cycles. The recoveries of QNs in a variety of wastewater range from 105 to 119%, confirming its application potential in the measurement of total QNs in reality. Significance The biosensor can realize rapid and sensitive detection of total QNs in water samples by simple pretreatment, which overcomes the disadvantage of the traditional methods that require complex pretreatment and time-consuming, and pave the groundwork for expansive development centered around this technology.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiangnan Huang,Jiali Huang,Xugang Shu,Xingan Cheng,Hao Yu,Yonghai Cao,Zhuofeng Hu,Jimmy C. Yu
Ocean acidification from the uptake of CO 2 and antibiotic pollution from a consequence of inshore mariculture are two serious threats to marine ecosystems. In this work, a novelty oxygen-doping carbon nitride (O-CN) photocatalyst are designed for the release of CO 2 and degradation of a targeted antibiotic (ofloxacin, OFL) in acidified seawater. Notably, this photocatalytic system can take advantage of ocean acidification as more CO 3 •- radicals were produced in the seawater. The catalyst could degrade OFL rapidly ( k = 0.039 min −1 ) in the presence of CO 3 2– and HCO 3 – , which derive from the dissolved CO 2 in the seawater, much higher than that of pristine CN ( k = 0.013 min −1 ). Mechanism study revealed that the existence of CO 3 2– and HCO 3 – would facilitate the generation of new N-C-O (O1) groups on the O-CN surface. These O1 groups are the active sites for the formation of •OH radicals that can oxidize OFL and release CO 2 . This investigation offers a novel strategy for alleviating two environmental threats simultaneously.
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CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Chengqian Zhao,Leyan Xu,Yaobin Wang,Heng Qiao,Yunxia Zhao,Dong Li,Yunfei Bu
In this study, a novel perovskite oxide (Co@D-PBSC) for activation peroxymonosulfate (PMS) to degrade organic pollutants in wastewater was developed. Cobalt nanoparticles (Co NPs) and oxygen vacancies (OVs) were introduced to the perovskite oxide lattice via a non-stoichiometric ratio and separate-out strategy. The OVs and Co NPs provided abundant active sites for the activation of PMS and the generation of reactive oxygen species. The Co metal-OVs bridge promote the adsorption of PMS, meanwhile, Co nanoparticles accelerate the Co 2+ /Co 3+ redox cycle, resulting in the production of the main reactive substance, sulfate radicals (SO 4 •− ). The results of catalytic experiments showed that 85 % of ofloxacin (OFX) degradation efficiency was obtained within 1 min at 0.1 g/L Co@D-PBSC, 0.3 g/L PMS, 20 mg/L OFX (150 mL), and solution pH 7.0, which indicated that Co@D-PBSC/PMS system exhibits excellent performance. This work demonstrated an efficient perovskite catalyst for PMS activation in wastewater treatment and provided a useful catalyst design strategy for the advanced oxidation processes (AOPs).
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Caobin Wu,Luhan Su,Benyin Zhang,Xinyu Wang,Mingming Wang,Jing Zhang,Qingguo Wang
Natural pyrite (FeS 2 ) has been widely used as heterogenous Fenton catalyst due to the unique iron supplying and ferrous regeneration performance, however, natural pyrite has poor catalytic activity due to the low surface reactivity. Ball milling is commonly used to modify pyrite, but the mechanism has not been thoroughly studied. In our work, by optimizing the ball milling conditions, the catalytic efficiency of modified pyrite is increased by 60 times compared to natural pyrite, and the ball milled pyrite Fenton system was able to degrade dyes and a series of antibiotics within 30 min. Compared to ball milling in nitrogen and vacuum, ball milling in air increased the proportion of S 2 − and active iron sites on the surface of pyrite, which assisted and accelerated the regeneration of ferrous and enhanced the iron supplying performance. This work explored the mechanisms of ball milling to modify the properties of pyrite, reported a green and efficient ball milled pyrite Fenton system, and provided a new insight in regulating ball milling conditions for mechanochemical modification.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xuefeng Zhang,Qin Yang,Zixiao Li,Wenjing Tang,Asmaa Farouk,Mohamed S. Hamdy,Yingchun Yang,Xuping Sun
The electrochemical chlorine evolution reaction (CER) is an essential and valuable technology for converting Cl − to Cl 2 in industrial-scale applications. However, under the background of freshwater scarcity, seawater electrolysis for Cl 2 generation becoming highly demanded. Meanwhile, pollutant degradation in the ocean is still challenging, especially in coastal and offshore seawaters. Herein, we provide a facile approach for constructing a highly efficient system for simultaneous Cl 2 evolution and organic contaminant abatement utilizing Co 3 O 4 nanosheet arrays decorated carbon cloth (Co 3 O 4 /CC) anode in the marine environment. The fabricated Co 3 O 4 /CC electrode achieved a considerably low potential of 1.55 V to reach a current density ( j ) of 10 mA cm −2 and long-term stability of 12 h at 100 mA cm −2 in seawater (pH = 2). Meanwhile, the practical environmental remediation results attested that the Co 3 O 4 nanosheet arrays possess an outstanding Carbamazepine (CBZ) degradation efficiency of 100 % within 6 min accompanied with a k value of 0.358 min −1 in real seawater, demonstrating the integrity and reusability. The overall findings offer new insight into designing highly active CER catalysts with efficient pollutant degradation in the marine environment.
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NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 20
·9185-9195
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IF 2.7
Shikai Xue,Dongying Zhu,Qing Zuo,Shuangfeng Yang,Haiyan Wang,Qiujun Lu,Guoxing Yin,Guihua Ruan,Fuyou Du
A novel MIL-101(Fe)/ZnCrZr-LBMO heterojunction was successfully constructed and used for the removal of ciprofloxacin (CIP) in this work. The MIL-101(Fe)/ZnCrZr-LBMO composite exhibited significantly enhanced photocatalytic degradation activity, with reaction rates approximately 3.4 and 3.1 times faster than those observed with pristine MIL-101(Fe) and ZnCrZr-LBMO, respectively. The effect of different amounts of ZnCrZr-LBMO, sample pH, CIP concentration, inorganic cations, and anions on CIP removal was investigated, and the possible intermediates and degradation pathways of CIP were speculated. The·O2− radicals dominated CIP degradation, with minor contributions from 1O2, h+, and ·OH radicals. The composite exhibited high removal rates for CIP (94.7%), ofloxacin (86.8%), and tetracycline (96.3%), respectively, within 60 min of light irradiation, and excellent reusability, retaining over 85.1% CIP degradation rate after five cycles. Our work provides a new reference to construct highly efficient and easily recyclable MIL-101(Fe)/ZnCrZr-LBMO photocatalysts for the removal of antibiotic pollutants, promising advancements in real water treatment applications.
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Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Mingyue Wang,Quan Zhou,Lingling Li,Qiuyi Liu,Min Wang,Yue Lan,Yuqiang Xiao,Jiaqi Hu,Zhangyong Song,Famin Ke,Xiurong Guo,Dandan Wang,Die Gao
Glucocorticoids possess extensive and potent pharmacological effects, but their misuse and overuse are widespread concerns. Consequently, the environmental pollution and health hazards associated with their excessive usage cannot be overlooked. There is an urgent need for enhanced removal and a thorough understanding of the environmental and safety risks arising from the overconsumption of these drugs. In this study, a novel F, N-enriched covalent organic framework (designated as TAPT-COF) with high crystallinity was synthesized. TAPT-COF features numerous active sites, including F-F interaction and hydrogen bond interaction sites, along with a high specific surface area and good thermal stability. These characteristics enable TAPT-COF to serve as an advanced adsorbent for dispersed solid-phase extraction (D-SPE) of glucocorticoids such as fluocinonide acetate, budesonide, and dexamethasone, with adsorption capacities ranging from 146.77 to 228.90 mg·g⁻¹ . Notably, TAPT-COF exhibits exceptional protein exclusion efficiency, achieving exclusion rates exceeding 95 %. Due to these advantages, TAPT-COF based D-SPE demonstrates strong applicability in the analysis of complex practical samples, including water and plasma, with satisfactory recoveries ranging from 76.48 % to 112.76 %. Compared to a COF (TPB-COF) that lacks a triazine group, TAPT-COF exhibits superior adsorption performance for target glucocorticoids. This is attributed to its ability to provide enhanced electrostatic interactions, as well as the synergistic effects of hydrogen bonding and F-F interactions. Additionally, TAPT-COF displays a low hemolytic activity, indicating its potential for in vivo analysis.
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SENSORS AND ACTUATORS B-CHEMICAL
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2016
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IF 4.758
Beibei Mao,Fei Qu,Shuyun Zhu,Jinmao You
Herein, utilizing fluorescent Ag nanoclusters (Ag NCs) capped by polyethyleneimine (PEI) with different molecular weights, we constructed a novel Ag NCs-Cu 2+ sensing system based on fluorescence turn-on strategy for trace detection of quinolones, including nalidixic acid, cinoxacin, ciprofloxacin/ofloxacin, and moxifloxacin; these were the representatives of four generations of quinolone antibacterial drugs. The fluorescence of Ag NCs could be efficiently quenched by Cu 2+ , while with the addition of quinolones, the fluorescence of this system recovered rapidly. This protocol exhibited excellent sensitivities to these five quinolones. For instance, the linear ranges were from 1 to 100 nM for nalidixic acid with limit of detection (LOD) 0.47 nM, from 1 to 80 nM for cinoxacin with LOD 0.43 nM, from 0.1 to 120 nM for ciprofloxacin with LOD 38 pM, from 0.1 to 80 nM for ofloxacin with LOD 49 pM, and from 0.1 to 120 nM for moxifloxacin with LOD 48 pM, respectively, revealing that this approach showed low detection limits and wide linear ranges. Benefiting from the high sensitivity, the satisfactory recoveries were obtained for trace detection of quinolones in real samples, such as tablets, human urine and serum.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2016
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IF 4.758
Xiuying Liu,Lihong Su,Lijie Zhu,Xue Gao,Yuxin Wang,Fengling Bai,Yiwei Tang,Jianrong Li
In this study, aptamer-functionalized magnetic Fe 3 O 4 conjugated with upconversion nanoparticles (UCNPs) were used as hybridization nanoprobes to quantify trace enrofloxacin (ENR) in food samples. Owing to the autofluorescence-free nature of UCNPs, an ENR-responsive aptamer, and the use of magnetic separation to further reduce background signals, our sensing system enabled rapid and highly sensitive detection of trace ENR in real samples. The proposed sensing method was validated in terms of selectivity, linearity, accuracy, precision, and sensitivity; and then was applied to the analysis of four different fish samples. Recoveries between 85.1% and 98.5%, and relative standard deviation (RSD) values in the range of 2.4% to 5.0% and from 3.0% to 4.3%, for intra- and inter-day tests, respectively, were obtained, with the limits of detection and quantification of 0.06 and 0.20 ng/mL, respectively. Therefore, the good validation and application results that we obtained indicate that the sensing method is suitable for the quantification of target ENRs in real samples, and show great potential for wide-ranging application in bioassays by simply changing the type of aptamer.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2016
·
IF 3.299
Xiaohui Wu,Mingjie Huang,Tao Zhou,Juan Mao
A novel magnetic molecular imprinting composites (MICs) were successfully synthesized through cross-linked chitosan and γ-Fe 2 O 3 particles, and the selective removal of aqueous NOR was demonstrated. The γ-Fe 2 O 3 particles embedded in MICs were still of intrinsic crystal and complexed with both amino and hydroxyl groups of chitosan. Adsorption behavior of NOR onto MICs could be described by the pseudo-second-order kinetic and the Langmuir isotherm model. Excellent selective NOR adsorption was identified with competition of sulfadiazine (SD), ofloxacin (OFL) and phenol, respectively. It could be ascribed to the memory cavities for NOR molecules, as well as the formation of triple intermolecular hydrogen bonds with suitable angle and length. Furthermore, application feasibility of MICs in NOR-spiked municipal wastewater treatment plant (WWTP) effluent was investigated. Competing with the effluent organic matters (EfOM), effective adsorption performance of NOR could be still obtained. Effect of humic and fulvic acid-like organics could be effectively reduced, while adsorption of tryptophan-like substances was slightly enhanced. In addition, it was found that Fenton-like oxidation instead of NaOH washing would be more appropriate for the multiple regenerations of MICs. The former would reserve more memory cavities and lead to oxidative decomposition of the desorbed NOR into micromolecular organics of low environmental impacts.
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ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Yan-Fei Wang,Yang-Guang Wang,Xiao-Kun Ouyang,Li-Ye Yang
We herein describe a novel adsorbent based on molecularly imprinted polymers (MIPs) on the surface of magnetic carboxylated cellulose nanocrystals (Fe3O4@CCNs@MIPs) for the separation and purification of six fluoroquinolones (FQs) from egg samples. The obtained Fe3O4@CCNs@MIPs not only exhibited a large surface area and specific recognition toward FQs, but also were easily gathered and separated from the egg samples using an external magnetic field. The morphologies and surface groups of the Fe3O4@CCNs@MIPs were assessed by X-ray photoelectron spectroscopy, transmission electron microscopy, vibrating sample magnetometry, X-ray diffraction, thermogravimetric analysis, Fourier transform infrared spectroscopy, and Brunauer–Emmett–Teller surface area analysis. The Fe3O4@CCNs@MIPs exhibited high selectivity toward six structurally similar FQs. An enrichment approach was established for the measurement of six FQs from egg samples using Fe3O4@CCNs@MIPs coupled to high-performance liquid chromatography. The recovery of spiked FQs ranged from 75.2–104.9% and limit of detection was in the range of 3.6–18.4 ng g–1 for the six FQs. Therefore, the proposed method is a promising technique for the enrichment, separation, and determination of FQs from biomatrices.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2017
·Vol. 409
·期 28
·6643-6653
·
IF 3.431
Wang Nan,Wang Yan-Fei,Omer Ahmed M.,Ouyang Xiao-kun
A novel adsorbent based on the surface of magnetic graphene oxide-grafted cellulose nanocrystal molecularly imprinted polymers (Mag@GO-g-CNCs@MIPs) was developed for the selective extraction and fast adsorption of fluoroquinolones (FQs) from river water samples. Cellulose nanocrystals (CNCs) were grafted onto activated graphene oxide (GO), and the surfaces of the obtained magnetic GO-g-CNC particles were molecularly imprinted with polymers using ofloxacin (OFX) as a template molecule and methacrylic acid (MAA) as a functional monomer. The resulting Mag@GO-g-CNCs@MIP material was characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, vibrating sample magnetometry, and X-ray photoelectron spectroscopy. Under optimum adsorption conditions, the Mag@GO-g-CNCs@MIPs with large specific surface area were easily collected and separated using an external magnetic field. Mag@GO-g-CNCs@MIPs exhibited an ultra-fast adsorption profile for FQs (5 min to achieve the maximum adsorption capacity of 74 mg/g), with imprinting factor values ranging from 1.5 to 3.1. High recognition selectivity towards nine FQs from real river water samples was established through coupling with high-performance liquid chromatography (HPLC), and the recovery of samples spiked with nine FQs was found to be in the range of 79.2–96.1%, with a detection limit ranging from 6.5 to 51 ng/g. Moreover, the data obtained adhered to the Freundlich isotherm model, and the adsorption kinetics followed a pseudo-second-order model. Finally, the Mag@GO-g-CNCs@MIPs could be regenerated and reused for seven consecutive cycles with only a 13% drop in adsorption capacity, indicating its effective application as a new, reusable, and selective adsorbent for the enrichment and separation of FQs from aqueous solutions.
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