MICROCHEMICAL JOURNAL
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2021
·
IF 4.821
Jinyu Lin,Junchao Qian,Yaping Wang,Yue Yang,Yuxuan Zhang,Jianping Chen,Xingwang Chen,Zhigang Chen
The misuse of antibiotics has led to the emergence of resistant microbial species and boiled over into a serious crisis worldwide. As a member of potent antibiotics, oxytetracycline is frequently detected in water environment. Thus, detecting oxytetracycline in water samples is vital for human health. Herein, we endeavour to build a novel and highly sensitive electrochemical sensor with CeO 2 -Co 3 O 4 QDs@porous carbon nanocomposite, which amplifies the electrode sensor signal for detecting oxytetracycline (OTC). The as-synthesized CeO 2 and Co 3 O 4 quantum dots (QDs) are firmly embedded in the carbon sheets with the size dimension in range of 2–5 nm. The obtained morphological features were evaluated for their electrochemical potential towards oxidation of OTC. The results reveal that this novel electrode exhibits excellent electrocatalytic performance with the linear ranges from 1 × 10 −8 M to 1 × 10 −4 M and a low detection limit of 3.23 × 10 −9 mol L −1 . So, this method paves a new way for constructing electrochemical sensor, which enables a low-cost and effective utilization for the detection of OTC in the agricultural product.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
Materials
·
2018
·Vol. 11
·期 6
·962
·
IF 2.467
Mohammed Awad Abedalwafa,Yan Li,De Li,Xiaojun Lv,Lu Wang
Driven by economic interests, the abuse of antibiotics has become a significant concern for humans worldwide. As one of the most commonly used antibiotics, oxytetracycline (OTC) residue in animal-derived foods occurs occasionally, which has caused danger to humanity. However, there is still no simple and efficient solution to detect OTC residue. Here, an easily-operated colorimetric strategy for OTC detection was developed based on nickel ions (Ni2+) immobilized carboxymethylcellulose/polyacrylonitrile nanofibrous membranes (Ni@CMC/PAN NFMs). Owing to numerous O- and N-containing groups OTC has a strong tendency to complex with Ni2+on the strips, inducing a color change from light green to yellow visible to the naked eye. The NFMs structural features, CMC functionalization process, and Ni2+immobilization amount was carefully regulated to assure OTC detection whilst maintaining the inherent characteristics of NFMs. With the benefits of the large specific surface area (SSA) and small pore size of NFMs, the strips not only exhibited a rapid response (2 min), and low detection limit (5 nM) but also performed with good reversibility and selectivity concerning OTC detection over other antibiotics. The successful development of such enchanting nanofibrous materials may provide a new comprehension into the design and improvement of colorimetric strips.Keywords:nanofibrous membranes;nickel ions;colorimetric strips;oxytetracycline detection
研究领域:
材料科学
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分析化学
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食品安全
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产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Jinghua Liu,Jing Liu,Bining Xue,Runqiang Yu
This study presents a visible light-driven composite photocatalyst based on an improved ZrO 2 for the removal of oxytetracycline (OTC) from mariculture wastewater. The ZP composite photocatalyst was prepared by co-precipitation and characterized in detail using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and ultraviolet–visible diffuse reflectance spectroscopy methods. It was observed that the incorporation of Pr 6 O 11 resulted in a notable increase in the specific surface area of the ZP composite photocatalyst. Furthermore, the enhanced ZP composite photocatalyst exhibited a band gap width of 2.41 eV and a broad spectral utilization range extending up to 685 nm. Meanwhile, 1.0 g/L of ZP 0.3 composite photocatalyst demonstrated a removal rate of up to 83.25 % for 15 mg/L of OTC at pH 8. The illumination time exhibited the most significant impact on the OTC removal rate. The findings of this study indicate that ZP composite photocatalyst exhibits excellent photocatalytic efficacy and holds considerable promise for the remediation of OTC pollution in mariculture wastewater.
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
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Lianyu Jia,Yang Jin,Jun Li,Zhizhen Wei,Ming Chen,Jun Ma
In this work, a spiral microchannel reactor was used to study the photocatalytic degradation process of oxytetracycline (OTC) in a titanium dioxide (TiO2) slurry system. The influence of parameters such as residence time, TiO2 dosage, OTC concentration, light intensity, and concentration of added ions (NO3–, SO42–, Ca2+, Fe3+) on OTC removal was systematically investigated, and the degradation stability of OTC in the microreactor was evaluated. The results show that under the best experimental conditions, the degradation rate of OTC can reach 99.33%, the initial stage apparent reaction rate constant is 7.7124 min–1, and the space–time yield is 142.79 m3 pollutants/(m3 reactor day). In addition, the results prove the high efficiency and stability of OTC degradation in the microreactor. OTC can be efficiently degraded under high TiO2 dosage, high initial OTC concentration, and low light intensity, which demonstrates the outstanding advantages of spiral microchannels for OTC degradation in slurry systems. This study has a guiding significance for the efficient photocatalytic degradation of tetracycline antibiotics in slurry systems.
研究领域:
环境科学
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化学工程
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生物学
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产品关联
DOI
高影响因子
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
·
2017
·Vol. 40
·期 2
·763-776
·
IF 2.616
Wang Lanjun,Wang Jinhua,Zhu Lusheng,Wang Jun
The production of commercial livestock and poultry often involves using with antibiotics and feed additives, such as oxytetracycline (OTC) and copper (Cu). These are often excreted into the soil by animal feces; hence, combined pollutants may contaminate the soil. To evaluate single and combined toxic effects of OTC and Cu on the soil ecology, changes in quantities of bacteria, fungi, and actinomycetes in the soil were studied over a 28-d incubation period by a plate count method, microbes numbers counted on days 7, 14, 21, and 28. Abundances of ammonia monooxygenase ( amoA ) gene expression by ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) in soil samples also were tested by real-time polymerase chain reactions (RT-PCRs) on day 21. The results revealed that the numbers of bacteria, fungi and actinomycetes and amoA genes copies of AOA and AOB were reduced seriously by exposure to Cu (1.60 mmol/kg). Similarly, the combined pollution treatments (mole ratios of OTC: Cu was 1:2, 1:8, and 1:32) also had inhibitory effect on bacteria, fungi, and actinomycetes numbers and amoA gene copies of AOA and AOB; the inhibitory rate was on obvious growth trend with the increasing mole ratios. Effects from single OTC pollution were found on bacteria (days 7 and 14), fungi (days 7, 14, 21, and 28), and AOA- amoA gene copies (day 21), with promotion at a low concentration (0.05 mmol/kg) and suppression at higher concentrations (0.2 and 0.8 mmol/kg). Also, numbers of bacteria, fungi, and actinomycetes decreased with longer culture times. Combining OTC and Cu led to a higher inhibition of soil microbes than when either chemical was used alone. However, there was no significant relationship between single and combined toxic chemicals because of their complicated interactions, either antagonistic or synergistic. The results also indicated the sensitivity of bacteria, fungi, actinomycetes on toxic chemicals existed difference and that the AOA were more tolerant than the AOB to these chemicals.
研究领域:
环境科学
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微生物学
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土壤生态学
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DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 53
·80399-80410
·
IF 5.19
Shu Xinpeng,Bi Huaqi,Wang Jun,Yang Jiaxin,Wang Jue,Liu Guangqing,Su Bensheng
Catalytic ozonation with supported metal oxides is a promising strategy for addressing refractory pollutants in wastewater. In this study, γ-Al 2 O 3 supported MnO x -CeO x catalysts (MC 1 , MC 2 , and MC 3 ) obtained at different calcination temperatures (400 °C, 550 °C, and 700 °C) were applied as effective catalysts for ozonation and explored the feasibility of the treatment of oxytetracycline (OTC) wastewater. Comparatively, the MC 2 possessed the highest molar ratios of Mn 3+ /Mn 4+ (1.60) and Ce 3+ /Ce 4+ (0.96), the largest surface area (273.8 m 2 g −1 ) with a petal-shaped structure, and most abundant surface hydroxyls (3.78 mmol g −1 ). These physicochemical characteristics benefited the surface reaction and resulted in the acceleration of ozone decomposition, electron transfer, and •OH generation, thereby improving the catalyst’s adsorption ability and catalytic activity. The combination with MC 2 increased the OTC and COD removal of the ozonation process from 59.1% and 29.0% to 94.7% and 83.3% in 25 min, respectively. By employing electron paramagnetic resonance (EPR) and radical quenching experiments, it was verified that •OH species generation promoted the mineralization of OTC. The possible degradation pathways of OTC were investigated through mass spectrometry, and the route consisted of dehydration, deamination, and demethylation. Moreover, during a 12-day continuous experiment, MC 2 catalyst exhibited excellent reusability and catalytic stability, with COD removal efficiencies above 80%.
研究领域:
环境科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
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2023
·Vol. 13
·期 20
·2764
·
IF 5.3
Muneerah Alomar,Naila Arshad,Muhammad Sultan Irshad,Shaimaa A. M. Abdelmohsen,Iftikhar Ahmed,Nawal Alhoshani,Areej S. Alqarni
Developing a sustainable environment requires addressing primitive water scarcity and water contamination. Antibiotics such as oxytetracycline (OTC) may accumulate in the environment and in the human body, increasing the risks to the ecosystem. The treatment of polluted water and the production of potable water can be achieved in a variety of ways, including photodegradation, solar distillation, and filtration. Freshwater supplies can be increased by implementing energy-efficient technologies for the production of clean water. Solar water evaporation combined with photocatalytic degradation and sterilization offers a promising avenue for integration into the clean water and energy production fields. The present study reports the synthesis of a 3D solar steam generator comprised of BiVO4and carbon nanotubes (CNT) nanocomposite decorated over a cigarette filter as the light-to-heat conversion layer for solar steam generation. The BiVO4@CNT-based 3D solar evaporator over the hydrophilic cellulosic fibers of the cigarette filter endowed excellent evaporation rates (2.36 kg m−2h−1) under 1 kW m−2solar irradiation, owing to its superior hydrophilicity and broadband solar absorption (96%) equipped with localized heating at microscale thermal confinement optimized by the minimum thermal conductivity of the overall system. Furthermore, the BiVO4@CNT composite exhibited a heightened photo activity up to 83% of the photodegradation of oxytetracycline (OTC) antibiotic due to the inhibition of charge recombination from the industrial effluents. This approach transforms the water-energy nexus into a synergistic bond that offers opportunities to meet expected demand, rather than being competitive.Keywords:solar evaporation;BiVO4;MWCNTs;photocatalytic;freshwater;oxytetracycline
研究领域:
环境科学
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材料科学
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生物学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
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2022
·Vol. 10
·期 35
·6777-6783
·
IF 7.571
Jixiang Wang,Xiaolei Li,Rong Zhang,Bingjie Fu,Mingcan Chen,Mengxue Ye,Wanyu Liu,Jingjing Xu,Guoqing Pan,Hongbo Zhang
The detection and elimination of antibiotic contaminants, such as oxytetracycline (OTC), a broad-spectrum tetracycline antibiotic, would be of help in efficient environmental monitoring, agriculture and food safety tests. Nevertheless, currently available methodologies, which mostly rely on the chromatographic separation of OTC, suffer from low sensitivity and complicated processes. Thus, we report here on the design and synthesis of a fluorescent sensor based on molecularly imprinted magnetic halloysite nanotubes (referred to as MHNTs@FMIPs) for the effective detection and purification of OTC in actual environmental samples. The fluorescence of the MHNTs@FMIPs was quenched obviously upon loading with OTC, covering a linear concentration range of 10–300 nM with a limit of detection (LOD) as low as 8.1 nM. The imprinting factor is 4.47, indicating an excellent specificity. Furthermore, the MHNTs@FMIPs can be applied to the quantitative detection of OTC (5 cycles of 300 nM) in aquaculture wastewater and Yangtze River water, demonstrating their immense application potential.
研究领域:
环境科学
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分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2023
·
IF 4.4
Ciyang Zhang,Keren Lu,Linrui Li,Wu Lei,Mingzhu Xia,Fengyun Wang
Oxytetracycline hydrochloride (OTC) is a commonly used over-the-counter antibiotic, valued for its potent antibacterial properties. However, the inappropriate and excessive use of OTC can result in the accumulation of the drug in both the environment and human body, causing significant harm to ecosystems and human health. Therefore, the development of a fast and sensitive method for detecting OTC is of great significance. Lanthanide metal–organic frameworks (LnMOFs) can effectively excite lanthanide metals to emit long-lifetime, narrow and stable fluorescence based on the antenna effect, but their application in fluorescence sensing is rarely reported. In this work, a strongly fluorescent material Tb-MOF was synthesized by a facile solvothermal method using 1,2,4,5-phenylenetetracarboxylic acid (H 4 btec) and 1,10-phenanthroline (1,10-phen) as organic ligands and lanthanide metal Tb as the luminescent center. Tb-MOF is a stable material in water and shows excellent linearity with OTC in the concentration range of 0 ∼ 70 μM, with low detection limit (0.12 μM) and luminescence color transition from bright green to dark green during the detection process. X-ray diffraction, UV–vis absorption and fluorescence lifetime analyses revealed that the fluorescence quenching of Tb-MOF by OTC is caused by the inner filter effect in static quenching. Test strips for OTC detection were successfully prepared using Tb-MOF. These strips are not only low cost and easy to prepare but can also be used as portable sensing devices that can be easily distinguished by the naked eye during OTC testing. This study not only presents a fluorescent probe for the detection of OTC in water but also offers a practical method for converting fluorescent luminescent materials into functional devices for OTC detection.
研究领域:
分析化学
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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
Analytical Methods
·
2015
·Vol. 7
·期 6
·2585-2593
·
IF 1.821
Congcong Fang,Shijia Wu,Nuo Duan,Shaoliang Dai,Zhouping Wang
A novel sensitive aptasensor was developed for the quantification of oxytetracycline (OTC) in this study. Artificial aptamer-modified magnetic nanoparticles (aptamer-MNPs) were employed as capture probes, and complementary oligonucleotide-modified upconversion nanoparticles (cDNA-UCNPs) were used as signal probes. Then, the probes were hybridized to form poly-network structure MNPs-UCNPs signal probes. Finally, when the target was introduced, the aptamer combined with the priority target and the signal probe was replaced. The proposed method achieved a linear range between 0.05 and 100 ng mL−1, and the limit of detection (LOD) was as low as 0.036 ng mL−1, benefiting largely from labeling with UCNPs, aptamer affinity and magnetic separation. Then, we successfully applied the method to measure OTC in milk samples and validated it by a commercially available enzyme-linked immunosorbent assay (ELISA) method. The results demonstrated that the method possessed high sensitivity and good selectivity for the determination of OTC and is applicable to the determination of OTC in food samples.
研究领域:
分析化学
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食品科学
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纳米技术
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2022
·Vol. 29
·期 33
·50177-50191
·
IF 5.19
Wang Meng-lu,Zhao Zhe,Lin Shumin,Su Ming,Liang Bolong,Liang Shu-xuan
The present study aimed to investigate the co-adsorption and application of water stabilized Fe 3 O 4 @ZIF-8 composite with magnetic cubic crystal structure. This new material was successfully prepared by facile modification strategy and rational design, which was used for simultaneous adsorption of oxytetracycline (OTC) and Pb(II) in aqueous solution. The co-adsorption behavior and mechanism of the composite for OTC and Pb(II) were systematically investigated by characterization techniques and batch experiments, and its application potential was effectively evaluated. The results showed that the synthesized Fe 3 O 4 @ZIF-8 composite innovatively retained the cubic crystal structure of ZIF-8 and was successfully loaded on the surface of Fe 3 O 4 particles with small particle size to form a core-shell structure. The Fe 3 O 4 @ZIF-8 composite possessed a large specific surface area (1722 m 2 /g), magnetic separation performance (13.4 emu/g), and rich functional groups. The co-adsorption of OTC and Pb(II) on Fe 3 O 4 @ZIF-8 had fast reaction kinetics (equilibrium within 90 min) and large adsorption capacity (310.29 mg/g and 276.06 mg/g respectively). The adsorption process for both contaminants followed pseudo-second order kinetics and Langmuir isotherm models and had synergistic and competitive effects at the same time. π-π stacking and electrostatic interaction were the main mechanisms of adsorption. Fe 3 O 4 @ZIF-8 had good adsorption performance after cyclic adsorption for 4 times and it performed well in the treatment of real waste water. This study provided a new sight for the control of combined pollution of OTC and Pb(II) and proved Fe 3 O 4 @ZIF-8 composites have great application potentials for complex wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2022
·
IF 4.52
Yeqing Xu,Ting Huang,Suao Wang,Yongsheng Yan
Molecularly imprinted sensor has been a common chemical sensor for the selective detection of target. Yet, the rapid detection of target was one of the remaining problems, which needs to be diligently improved. Herein, a molecularly imprinted mesoporous silicon material (N-CDs@mMIPs) was successfully prepared for the rapid, sensitive and selective detection of oxytetracycline (OTC). Non-toxic nitrogen-doped carbon quantum dots (N-CDs) with high fluorescence performance was chosen as a detectable fluorescence signal, OTC was the target analysis, 3-Aminopropyltriethoxysilane (APTES) as the functional monomer, tetraethyl silicate (TEOS) as the crossing link agent and cetyl trimethyl ammonium bromide (CTAB) as the pore-foaming agent. N-CDs@mMIPs was synthesized by the removal of CTAB and OTC. Under the optimal test conditions, the resultant N-CDs@mMIPs showed a faster response time within 0.5 min (30 s) and a lower detection limit of 0.035 μmol·L −1 compared with molecularly imprinted sensor without mesoporous structure (N-CDs@MIPs) and other molecularly imprinted sensors. Consequently, N-CDs@mMIPs was applied for the detection of OTC in milk and honey, satisfied recovery rates of 99.80 %–100.60 % and 99.75 %–102.10 % were obtained respectively. In general, the pore structure in mesoporous silicon accelerated the mass transfer rate between target and fluorescent substance, which greatly shortened the detection time of N-CDs@mMIPs to OTC. Furthermore, the pore structure in mesoporous silicon could effectively avoid the self-aggregation of N-CDs, thus improved the sensitivity of N-CDs@mMIPs.
研究领域:
分析化学
·
材料科学
·
食品安全检测
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DOI
高影响因子
危险品化学品经营许可证（带存储）