NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 27
·13010-13020
·
IF 3.925
Jianke Tang,Yanfeng Xue,Chunlei Ma,Shengjian Zhang,Qiaoling Li
The construction of p–n heterojunctions instead of p-type or n-type semiconductors can improve the separation efficiency of photoinduced electrons and holes. In this work, BiOI/tetrapod-like ZnO whisker (T-ZnOw) p–n heterojunction photocatalysts with different Bi/Zn molar ratios were prepared by the in situ precipitation of BiOI on a T-ZnOw substrate. The BiOI/T-ZnOw photocatalysts efficiently degraded rhodamine B (RhB) and oxytetracycline (OTC) under visible light irradiation. The photocatalyst with a Bi/Zn molar ratio of 1 : 10 (BZ-10) exhibited the highest photocatalytic activity, with 97.1% and 88.0% removal of RhB and OTC, respectively. After degradation cycling experiments, the OTC removal efficiency was still 80.7%. The photocatalytic activity of the BZ-10 composite was improved compared to those of pure T-ZnOw and BiOI. This was attributed to the large specific surface area and the efficient separation of charge carriers caused by the formation of p–n heterojunctions between BiOI and T-ZnOw. The photodegradation mechanism was put forward based on radical trapping experiments and electron spin resonance (ESR) results. The synthesized BiOI/T-ZnOw heterojunction composite could be a promising photocatalyst in environmental photocatalysis.
✓ 已验证
DOI
高影响因子
Frontiers in Plant Science
·
2026
·
IF 5.9
Ismail Khan,Muhammad Tariq,Asma Mehmood,Muhammad Sadiq,Faming Wang,Bi Zou,Faisal Nadeem,Abdul Rehman,Beena Saeed,Ping Zhuang
Microplastics (MPs) and antibiotics (ATs) frequently co-occur in agricultural soils, but their combined impacts on soil–plant systems and potential remediation options remain unclear. This 60-day pot experiment tested whether maize biochar (20 t ha-1) can alleviate the effects of polyethylene (PE, 10 g kg-1) and oxytetracycline (OTC, 50 mg kg-1) on soil properties, antioxidant enzyme activities, and A. tricolor growth. Co-exposure to PE and OTC significantly reduced soil nutrient availability, suppressed root development by 23%, and decreased aboveground biomass by 45% relative to the control, while pollutant treatments enhanced antioxidant enzyme activities, indicating induced oxidative stress rather than improved defense alone. Biochar application increased soil pH, cation exchange capacity, and nitrogen availability (NO3--N and NH4+-N by 22% and 19%, respectively), and partially mitigated contaminant-induced declines in photosynthesis, root traits, and biomass. Consistent with the CO2 measurements, biochar alone elevated short-term soil CO2 emissions by 49% and 27% at 30 and 60 days, respectively, whereas PE+OTC reduced CO2 fluxes by 55% and 29%, with biochar partly offsetting this suppression rather than uniformly lowering CO2. These findings suggest that corn straw biochar can alleviate phytotoxic effects of PE-OTC co-contamination and support crop production by improving soil nutrient status and moderating oxidative stress responses, while simultaneously altering soil carbon dynamics. From an applied perspective, biochar shows promise for managing co-contaminated vegetable soils, but future work should resolve underlying mechanisms especially pollutant bioavailability, microbial processes, and antibiotic resistance genes to guide safe, field-scale implementation.
✓ 已验证
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Mengchao Feng,Yuchang Wang,Xuewei Lang,Feng Wei,Huayan Si,Jianbin Zhang
This work reports the synthesis of a novel ( α / β- CdS)/Ce(OH)CO 3 composite featuring both heterojunction and heterogeneous junction structures via a simple injection titration-stirring method. The as-prepared composite exhibited excellent visible-light-driven photocatalytic activity for the degradation of high-concentration oxytetracycline (OTC) solution. Under optimal conditions determined by single-factor and response surface analyses, 0.0300 g of the composite achieved a 75.26% degradation efficiency for 50 mL of 160 mg/L OTC solution within 120 min of visible light irradiation. Notably, the composite demonstrated remarkable stability, retaining 62.39% of its initial activity after five cycles, and showed enhanced performance under real sunlight for 120 min, with a degradation rate of 78.50%. The improved photocatalytic performance is attributed to the uniform dispersion of CdS nanoparticles with abundant sulfur vacancies, which increase light absorption and facilitate charge carrier separation. Furthermore, the formation of direct Z -scheme heterojunctions and heterogeneous junctions between CdS and Ce(OH)CO 3 promotes efficient separation and transport of photogenerated carriers, thereby enhancing both photocatalytic activity and material stability.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yujia Yang,Huiyi Shen,Lejin Xu
This work is dedicated to achieving the high mineralization efficiency of oxytetracycline (OTC) in a dissolved oxygen (DO) activated Fenton-like system by constructing a catalyst with unique catalytic performance. Three-dimensional graphene anchored nZVI hybrid MnO 2 (3D-rGO@nZVI/MnO 2 ) with layered and porous structures was synthesized and characterized by field emission scanning electron microscopy coupled with an energy dispersive spectrometer (SEM-EDS), Brunner-Emmet-Teller (BET) analysis, X-ray diffraction (XRD) measurement and Raman spectroscopy. The experimental results showed that the removal efficiency of OTC could reach 100.0% with outstanding TOC decrease of 84.0% at natural pH in the 3D-rGO@nZVI/MnO 2 -DO system. Moreover, negligible harmful intermediates were detected by ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) after the reaction in the 3D-rGO@nZVI/MnO 2 -DO system. Reactive oxygen species (ROSs) detection, electrochemical measurements and X-ray photoelectron spectroscopy (XPS) analysis confirmed that the elimination mechanism of OTC was the unique catalytic degradation caused by the synergism of •OH and 1 O 2 . The unprecedented synchronous generation of •OH and 1 O 2 by DO activation provides an innovative strategy for further exploration of Fenton-like system toward more effective degradation of organic pollutants.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Yuanyuan Yang,Xiaohui Liu,Shuang Meng,Shun Mao,Wenquan Tao,Zhuo Li
A molecularly imprinted polymers (MIPs)-isolated AuNP-enhanced fluorescence sensor, AuNP@MIPs-CdTe QDs, was developed for highly sensitive and selective detection of oxytetracycline (OTC) in aqueous medium. The developed sensor combined the advantages of strong fluorescence signal of metal-enhanced fluorescence (MEF), high selectivity of MIPs, and stability of CdTe QDs. The MIPs shell with specific recognition served as an isolation layer to adjust the distance between AuNP and CdTe QDs to optimize the MEF system. The sensor demonstrated the detection limit as low as 5.22 nM (2.40 μg/L) for a concentration range of 0.1–3.0 μM OTC and good recovery rates of 96.0–103.0% in real water samples. In addition, high specificity recognition for OTC over its analogs was achieved with an imprinting factor of 6.10. Molecular dynamics (MD) simulation was utilized to simulate the polymerization process of MIPs and revealed H-bond formation as the mainly binding sites of APTES and OTC, and finite-difference time-domain (FDTD) analysis was employed to obtain the distribution of electromagnetic field (EM) for AuNP@MIPs-CdTe QDs. The experimental results combined with theoretical analyses not only provided a novel MIP-isolated MEF sensor with excellent detection performance for OTC but also established a theoretical basis for the development of a new generation of sensors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 38
·18251-18261
·
IF 3.925
Jiabao Sun,Qiang Li,Dajie Zhang,Dongsheng Xia
Oxytetracycline (OTC) is a typical antibiotic that poses a serious threat to the environment. However, traditional treatment methods suffer from low treatment efficiencies and potential secondary contamination. Therefore, there is a need to develop efficient, convenient, and environmentally friendly removal technology. In this paper, magnetic nano-Cu/Fe composites were successfully synthesized and used as the activator of peroxymonosulfate (PMS) to degrade OTC. The obtained catalysts with different ratios showed excellent degradation effects, especially the Cu/Fe-1 catalysts. The highest removal efficiency of OTC (93%) was achieved with 0.2 g L−1 PMS and 0.1 g L−1 catalyst in 60 min. The impacts of the catalyst and PMS dosages, initial temperature and pH, coexisting anions, microplastics, and real-life water samples were investigated. To explore the mechanism for OTC degradation, radical scavenging and electron spin resonance (EPR) experiments were carried out, and non-radical 1O2 was identified to be the main radical. TEM and XRD results show the presence of CuFe2O4 composites in Cu/Fe-1, which can promote the production of 1O2 and thus improve the OTC degradation efficiency. This work provides a new efficient, stable, low-cost, and environmentally friendly approach for the degradation of oxytetracycline.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2022
·
IF 6.796
Jianbin Zhao,Xinyan Li,Yanbin Xu,Yuxin Li,Li Zheng,Tiangang Luan
Direct discharge of aquaculture wastewater may have toxic effects, due to the presence of heavy metals, antibiotics, and even resistant pathogens , but little attention has been given. Here, tanks simulating a wild ecosystem were built to study the effects of long-term exposure to duck wastewater containing oxytetracycline (OTC) and/or arsenic (As) on the growth, physiological function, and gut microbiota evolution of Xenopus tropicalis . The results showed that duck wastewater had no apparent impact on X. tropicalis , but the impact increased significantly ( P < 0.05) with exposure to OTC and/or As, especially the impact on body weight and growth rate. Biochemical indicators revealed varying degrees of oxidative stress damage, hepatotoxicity (inflammation, necrosis, and sinusoids), and collagen fibrosis of X. tropicalis in all treated groups after 72 days of exposure, which indirectly inhibited X. tropicalis growth. Moreover, 16S rDNA amplicon sequencing results showed that the gut microbiota structure and metabolic function were perturbed after chronic exposure, which might be the leading cause of growth inhibition. Interestingly, the abundance of intestinal resistance genes (RGs) increased with exposure time owing to the combined direct and indirect effects of stress factors in duck wastewater. Moreover, once the RGs were expressed, the resistance persisted for at least 24 days, especially that conferred by tet A. These results provide evidence of the toxic effects of DW containing OTC (0.1–4.0 mg/L) and/or As (0.3–3.5 µg/L) on amphibians and indicate that it is vital to limit the usage of heavy metals and antibiotics on farms to control the biotoxicity of wastewater.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2021
·Vol. 12
·期 1
·128
·
IF 5.076
Lei Jia,Zhitao Xu,Rujie Chen,Xiangzhen Chen,Jun Xu
Tetracycline (TC) and oxytetracycline (OTC) are the most widely used broad-spectrum antimicrobial agents in tetracycline drugs, and their structures and properties are very similar, so it is a great challenge to distinguish and detect these two antibiotics with a single probe at the same time. Herein, a dual-channel fluorescence probe (SiCDs@mMIPs-cit-Eu) was developed by integrating two independent reaction sites with SiCDs-doped mesoporous silica molecular imprinting group and europium complex group into a nanomaterial. The synergistic influence of inner filter effect and “antenna effect” can be guaranteed to solve the distinction between TC and OTC. Moreover, this novel strategy can also sequentially detect TC and OTC in buffer solution and real samples with high sensitivity and selectivity. This method revealed good responses to TC and OTC ranging from 0 to 5.5 μM with a detection limit of 5 and 16 nM, respectively. Combined with the smartphone color-scanning application, the portable and cheap paper-based sensor was designed to realize the multi-color visual on-site detection of TC and OTC. In addition, the logic gate device was constructed according to the fluorescence color change of the probe for TC and OTC, which provided the application possibility for the intelligent detection of the probe.Keywords:molecularly imprinted route;rare earth;carbon dots;distinguishing detection;tetracyclines
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2023
·
IF 6.8
Guanlin Li,Yi Tang,Kiran Yasmin Khan,Yowhan Son,Jinho Jung,Xuchun Qiu,Xin Zhao,Babar Iqbal,Peter Joseph Stoffella,Gwang-Jung Kim,Daolin Du
Microplastics and antibiotics are emerging as ubiquitous contaminants in farmland soil, harming crop quality and yield, and thus threatening global food security and human health. However, few studies have examined the individual and joint effects of degradable and/or non-degradable microplastics and antibiotics on crop plants. This study examined the individual and joint effects of polyethylene (PE) and polylactic acid (PLA) microplastics and the antibiotic oxytetracycline (OTC) on pak choi by measuring its growth, photosynthesis, antioxidant enzyme activity, and metabolite levels. Microplastics and/or oxytetracycline adversely affected root weight, photosynthesis, and antioxidant enzyme (superoxide dismutase, catalase, and ascorbate peroxidase) activities. The levels of leaf metabolites were significantly altered, causing physiological changes. Biosynthesis of plant secondary metabolites and amino acids was altered, and plant hormones pathways were disrupted. Separately and together, OTC, PE, and PLA exerted phytotoxic and antagonistic effects on pak choi. Separately and together with OTC, degradable microplastics altered the soil properties, thus causing more severe impacts on plant performance than non-degradable microplastics. This study elucidates the effects on crop plants of toxicity caused by co-exposure to degradable or non-degradable microplastic and antibiotics contamination and suggests mechanisms.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2019
·
IF 4.527
Sicheng Shao,Yongyou Hu,Jianhua Cheng,Yuancai Chen
In this study, the characteristics of biodegradation of oxytetracycline (OTC) by strain Ochrobactrum sp. KSS10 were studied under various environmental conditions, including initial OTC concentrations, variable temperature, initial pH, and diverse carbon sources. The capability of this bacterial strain for performing simultaneous OTC degradation and nitrate reduction was also explored under aerobic conditions . An OTC degradation ratio of 63.33% and a nitrate removal ratio of 98.64% were obtained within 96 h. In addition, removal of OTC and ammonia from synthetic aquaculture wastewater by a Moving Bed Biofilm Reactor (MBBR) and changes in the resistant genes of microbial communities were also investigated. The results demonstrated that the strain KSS10 was the dominant contributor in OTC and ammonia removal in the MBBR chamber. It removed almost all ammonia and approximately 76.42% of OTC. The abundances of genes tet L, tet X and intI 1 were reduced by the MBBR, but the abundance of tet G and tet M were increased due to horizontal and vertical gene transfers. Such a result can potentially be used by the strain KSS10 for removing antibiotics and nitrogen from aquaculture wastewater during pre-treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2016
·
IF 7.476
Su Liu,Yu Wang,Wei Xu,Xueqi Leng,Hongzhi Wang,Yuna Guo,Jiadong Huang
In this paper, a novel sandwich-type electrochemical aptasensor has been fabricated and applied for sensitive and selective detection of antibiotic oxytetracycline (OTC). This sensor was based on graphene-three dimensional nanostructure gold nanocomposite (GR-3D Au) and aptamer-AuNPs-horseradish peroxidase (aptamer-AuNPs-HRP) nanoprobes as signal amplification . Firstly, GR-3D Au film was modified on glassy carbon electrode only by one-step electrochemical coreduction with graphite oxide (GO) and HAuCl 4 at cathodic potentials, which enhanced the electron transfer and loading capacity of biomolecules . Then the aptamer and HRP modified Au nanoparticles provide high affinity and ultrasensitive electrochemical probe with excellent specificity for OTC. Under the optimized conditions, the peak current was linearly proportional to the concentration of OTC in the range of 5×10 −10 −2×10 −3 g L −1 , with a detection limit of 4.98×10 −10 g L −1 . Additionally, this aptasensor had the advantages in high sensitivity, superb specificity and showed good recovery in synthetic samples. Hence, the developed sandwich-type electrochemical aptasensor might provide a useful and practical tool for OTC determination and related food safety analysis and clinical diagnosis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xin Liang,Laishi Li,Yusheng Wu,Feng Liu,Yuzheng Wang
The efficiency of Fenton-like catalysts was critically affected by the rapid transfer of Fe 2+ /Fe 3+ , a process that was essential for the formation of active free radicals by H 2 O 2 . Herein, we synthesized CuS/Fe 3 O 4 @MIL-100(Fe) (CFM) ternary composites using hydrothermal and in-situ growth methods to enhance the degradation of oxytetracycline hydrochloride (OTC-HCl) in a Fenton-like photocatalytic system. The incorporation of CuS as a co-catalyst into the double iron-based system significantly enhanced photocatalytic activity, achieving a 95.31 % degradation efficiency for OTC-HCl within 50 min under optimized conditions. The catalyst had good reusability, has 86.64 % degradation efficiency after five magnetic recovery cycles, and still showed good catalytic performance in the presence of five different concentrations of common anions. Further analysis using active species quenching and electron paramagnetic resonance (EPR) experiments revealed the role of oxygen-containing radicals in the process. Liquid chromatography-mass spectrometry (LC-MS) and density functional theory (DFT) calculations provided OTC-HCl degradation pathways and intermediates. X-ray Photoelectron Spectroscopy (XPS) analysis indicated that CuS enhanced the performance of the bis-iron-based materials by improving the transfer efficiency of Fe 2+ /Fe 3+ and Cu + /Cu 2+ ions, which in turn accelerated the generation of reactive radicals from H 2 O 2 .
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）