NANO
·
2014
·
IF 1.26
SHAOFANG SUN,YAFAN WU,XIAN ZHANG,ZHONGJIE ZHANG,YAN YAN,WEISHENG GUAN
The removal of CIP from the environment has become a mandatory issue. In our paper, we have realized the visible-light-driven degradation of CIP on the BiVO 4 – Bi 2 WO 6 nano-heterojunction photocatalysts. The synthesized photocatalysts were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), ultraviolet-visible (UV-Vis) absorption spectra and photoluminescence (PL) spectra. Compared with the single-phase BiVO 4 and Bi 2 WO 6 counterparts, BiVO 4 – Bi 2 WO 6 nano-heterojunction photocatalysts show enhanced photocatalytic degradation activities in visible-light-driven CIP degradation. Particularly, when R ( Bi 2 WO 6 ∕ BiVO 4 ) = 10 wt .%, the products exhibit the highest CIP degradation ratio in 60 min of 76.8% under visible light illumination. The tentative mechanism of the interface charge transfer (IFCT) effect in the BiVO 4 – Bi 2 WO 6 heterojunction structure is also discussed by using the band position calculation.
研究领域:
环境科学
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材料科学
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光催化技术
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DOI
高影响因子
CATALYSIS LETTERS
·
2024
·
IF 2.3
Hu Jingru,Jiang Minjun,Hu Bingwen,Cheng Gang
Remediation of antibiotics by photocatalysis technique has been regarded as a promising route to tackle with the environmental pollution affecting human survival and development. In this work, brookite TiO 2 nanorods with different oxygen vacancy have been synthesized through tailoring the volume of ethylene glycol by hydrothermally treatment with NaTiOx-nanoassembly. After constitute and morphology confirmation with different characterizations, their photocatalytic performances are evaluated via ciprofloxacin (CIP) antibiotic degradation experiments. The result shows that the TiO 2 -0 has the highest photocatalytic efficiency towards CIP degradation, comparing with TiO 2 -15 and TiO 2 -30 samples. Although the TiO 2 -30 has high concentration oxygen vacancy, it exhibits excellent adsorption ability in the dark, rather than CIP degradation rate. The photo/electrochemical tests suggest the photo-generated electron lifetime, charge transfer ability, and the effective active sites on the material’s surface are inversely proportional to the concentration of oxygen vacancies. It also concludes that rational fabrication conditions tailoring of the photocatalyst could optimize the corresponding capability in the antibiotic degradation process. In addition, the possible degradation pathway is also proposed based on the high resolution mass spectrometry (HRMS), and the acute toxicity changes in the degradation process are also predicted. Graphical Abstract
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
JOURNAL OF PLANT PHYSIOLOGY
·
2023
·
IF 4.3
Guofu Luo,Yirui Shen,Kun Wu,Huining Yang,Chuntao Wu,Xiangbing Chang,Wei Tian
Application of elicitors can greatly enhance plant immune resistance against pathogens. However, it is still obscure whether elicitor activity is influenced by diverse sources. This study investigated the effect of foliar spraying of 19 batches of Chrysanthemum indicum polysaccharides (CIPs) on the disease resistance of Atractylodes macrocephala Koidz. ( A. macrocephala ) and explored the main reasons for the differences of inducing activity of CIP elicitors. PCA, OPLS-DA, grey relational analysis and entropy weight method had good predictability for the activity evaluation of CIP elicitors and other plant-derived elicitors. The results showed that 19 batches of CIPs had definite regional differences in inducing activity and monosaccharide content. CIP elicitors with high inducing activity could significantly increase the accumulation of Atractylenolide Ⅱ and Atractylenolide Ⅲ, the mRNA relative transcription level of CAT , POD , PAL genes, the amount of pH change in the medium and effectively reduce the disease index of A. macrocephala . Furthermore, CIP with high inducing activity exhibited the high contents of Rha, Ara and GalA, which might be the main contributor to their high activity. The evaluation procedure developed in this work can be applied for screening CIP elicitors with high inducing activity, and it lays a foundation for identifying more functional elicitors related to plant immune resistance.
研究领域:
植物科学
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药用植物学
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分子生物学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Yuchi Dong,Yalan Liang,Haoyu Gao,Xianyu Jiang,Linbo Zhang,Liangjun Yin,Le Yuan,Xin Wang,Guo Jing
Magnetic metal absorbers will inevitably suffer from corrosion and aging failure in actual application environments (air, salt spray, acid/alkali, etc.), resulting in serious deterioration of their performance. Using inert, densified materials to modify absorber surface is an effective and feasible solution. Herein, a core-shell structure carbonyl iron composite absorbent (CIP@2-MI/MBI/EP) was prepared by in-situ polymerization with 2-methylimidazole (2-MI), 2-mercaptobenzimidazole (MBI), epoxy resin (EP) as the precursor, and carbonyl iron powder (CIP) as the core. The core-shell structure has enhanced both of corrosion resistance and microwave absorbing performance due to the effect of alleviating the intrusion of corrosive media and low dielectric characteristics of the corrosion inhibitors MBI and EP. The results of electromagnetic parameter test exhibited the minimum reflection loss(RL) of the modified absorbent at 13.78 GHz is -69.57 dB, and the thickness is only 1.65 mm. Electrochemical tests revealed the corrosion potential (E corr )of the composite powder shifted positively from -0.680 V to -0.012 V compared to original CIP. The corrosion current (i corr ) decreased from 59.1 μA/cm 2 to 0.1562 μA/cm 2 , and the annual corrosion rate (CR) decreased by 2 orders of magnitude to 0.0223 mil/year. These results attest to the exceptional corrosion resistance of the composites. In addition, the results of salt spray experiments revealed that the morphology and composition of CIP@2-MI/MBI/EP absorbers remained largely unchanged after 720 H salt spray test. Meanwhile, the acid resistance test (PH=1) further demonstrated the outstanding anti-corrosion performance of the composites. The research offers a new option for the development and design of high-efficiency microwave absorbent with robust corrosion resistance.
研究领域:
材料科学
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微波吸波材料
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腐蚀科学
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电磁波吸收
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表面工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yaozu Mi,Jian Lu,Bing Zhang,Liwen Sun,Shuo Zhang,Tian Ma,Lei Miao,Hailian Zang,Chunyan Li
Antibiotics containing primary amino groups are known to form humic acid-like substances (HALs) during composting. However, for antibiotics that generate humic acid (HA) precursors via bio-degradation, it remains unclear whether they can directly contribute to HA formation in compost and how inoculating microorganisms capable of degrading such antibiotics influences humus formation. This study focused on ciprofloxacin (CIP), a representative quinolone antibiotic. Here, we isolated thermotolerant CIP-degrading microbiota (TCM), primarily composed of Enterococcus and Aspergillus , and combined them with psychrotrophic cellulose-degrading fungi (PCDFs) to enhance humification under CIP stress in cold environments. Using maize straw and pig manure as substrates, TCM inoculation achieved 70.6 % CIP removal and significantly accelerated humification through dual biotic-abiotic pathways. Key findings include the synthesis of HALs via the polyphenol-protein pathway, driven by CIP-derived primary amine compounds (PACs) and quinones. Spectroscopic results demonstrated that TCM enhanced the aromaticity and structural complexity of humic substances (HAs), as evidenced by a 7.56 % reduction in the E4/E6 ratio and increased FTIR absorption at 1641 cm −1 . Metagenomic analysis revealed that TCM enriched functional genera ( Jeotgalicoccus , Halopseudomonas , and Caldibacillus ) and upregulated pathways associated with HA precursor synthesis. This study introduces a dual strategy integrating biodegradation and abiotic humification to transform CIP into stable humus, providing a novel “waste-to-resource” approach for managing antibiotic-contaminated manure in cold regions. The results offer critical microbial resources and mechanistic insights for advancing sustainable agricultural waste management.
研究领域:
环境科学
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微生物学
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农业废物管理
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DOI
高影响因子
MOLECULES
·
2021
·Vol. 27
·期 1
·135
·
IF 4.412
Zhengwei Qu,Yi Wang,Pingan Yang,Wei Zheng,Nan Li,Jingying Bai,Youwei Zhang,Kailin Li,Dashuang Wang,Zhaohui Liu,Kexin Yao,Rui Li,Yuxin Zhang
In this work, spherical flower-shaped composite carbonyl iron powder@MnO2(CIP@MnO2) with CIP as the core and ultrathin MnO2nanosheets as the shell was successfully prepared by a simple redox reaction to improve oxidation resistance and electromagnetic wave absorption properties. The microwave-absorbing properties of CIP@MnO2composites with different filling ratios (mass fractions of 20%, 40%, and 60% after mixing with paraffin) were tested and analyzed. The experimental results show that compared with pure CIP, the CIP@MnO2composites have smaller minimum reflection loss and a wider effective absorption bandwidth than CIP (RL < −20 dB). The sample filled with 40 wt% has the best comprehensive performance, the minimum reflection loss is −63.87 dB at 6.32 GHz, and the effective absorption bandwidth (RL < −20 dB) reaches 7.28 GHz in the range of 5.92 GHz–9.28 GHz and 11.2 GHz–15.12 GHz, which covers most C and X bands. Such excellent microwave absorption performance of the spherical flower-like CIP@MnO2composites is attributed to the combined effect of multiple beneficial components and the electromagnetic attenuation ability generated by the special spherical flower-like structure. Furthermore, this spherical flower-like core–shell shape aids in the creation of discontinuous networks, which improve microwave incidence dispersion, polarize more interfacial charges, and allow electromagnetic wave absorption. In theory, this research could lead to a simple and efficient process for producing spherical flower-shaped CIP@MnO2composites with high absorption, a wide band, and oxidation resistance for a wide range of applications.Keywords:spherical flower-like structure;CIP@MnO2;microwave absorption;interfacial polarization
研究领域:
材料科学
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电磁学
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DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 32
·48522-48538
·
IF 5.19
Wang Guanghui,Li Yingjie,Dai Jialing,Deng Nansheng
In this present study, a novel indirect Z-scheme TiO 2 @g-C 3 N 4 @biochar (TiO 2 @g-C 3 N 4 @BC) composite photocatalyst was successfully fabricated and characterized with SEM, TEM, EDS, XRD, FTIR, PL, XPS, and UV–vis DRS. The photocatalytic degradation behavior of ciprofloxacin (CIP) on the TiO 2 @g-C 3 N 4 @BC was evaluated under UV–vis and visible light irradiation, and the possible reaction mechanism of photocatalytic oxidation of CIP on the TiO 2 @g-C 3 N 4 @BC was explained. The TiO 2 @g-C 3 N 4 @BC composite photocatalyst exhibited stronger photocatalytic oxidation activity for CIP in comparison with TiO 2 , g-C 3 N 4 , TiO 2 @BC, and TiO 2 @g-C 3 N 4 . After 60 min of UV–vis and visible light irradiation, the photocatalytic removal efficiency of CIP by TiO 2 @g-C 3 N 4 @BC was 99.3 and 89.2%, respectively. The photocatalytic removal performance of CIP was affected by the initial concentration of CIP, catalyst dosage, and pH value. The composite photocatalyst presented excellent stability and reusability after five cycles. An indirect Z-scheme principle of the CIP photocatalytic oxidation reaction on TiO 2 @g-C 3 N 4 @BC was clearly proposed, and the whole process of photocatalytic degradation was the results of the interaction between CIP and reactive active species (·O 2 − , h + , and ·OH), of which ·O 2 − is the main active substance. Four CIP degradation pathways were proposed. This work may provide an effective strategy to remove antibiotics in 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
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 11
·116503
·
IF 4.316
Jiajie Zhou,Senhui Huang,Zhiqiao He,Shuang Song
A novel Ti/Sn-SbOx/PbO2-ODP electrode was constructed using a β-PbO2 layer modified with octadecyl phosphonic acid (ODP) through a co-electrodeposition method. Scanning electron microscopy with an energy dispersive spectrometer, X-ray diffraction and contact angle goniometry confirmed that ODP was successfully embedded into the β-PbO2 layer of Ti/Sn-SbOx/PbO2-ODP, increasing the water contact angle at the electrode surface from 75.9° to 133.9°. The Ti/Sn-SbOx/PbO2-ODP electrode exhibited excellent electrocatalytic oxidation of ciprofloxacin (CIP). The pseudo first-order rate constant for CIP removal was 3.92 h−1 at an electrolytic potential of 10 V, 2.6 times greater than that when using the unmodified electrode. Moreover, electrode stability was greatly improved after ODP modification. The Ti/Sn-SbOx/PbO2-ODP electrode had longer accelerated life (324 h) than the Ti/Sn-SbOx/PbO2 electrode (91 h). The enhanced electrocatalytic performance of Ti/Sn-SbOx/PbO2-ODP was attributed to improved utilization of hydroxyl radicals (•OH) resulting from higher oxygen evolution potential. Furthermore, the hydrophobic surface of Ti/Sn-SbOx/PbO2-ODP was beneficial for stronger adsorption of CIP, as evidenced by the initial surface concentration test.
研究领域:
材料科学
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环境工程
·
电化学
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DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 39
·395503
·
IF 3.5
Zhiwen Li,Zhilin Zhou,Jianghua Wang,Tingxian Tao,Yingqiang Fu
Carbon quantum dots (CQDs) have been extensively researched as fluorescent probes, but there are few reports on fluorescence-enhanced probes. Herein, nitrogen and sulfur co-doped CQDs (N, S-CQDs) with blue aggregation-induced emission enhancement (AIEE) fluorescence were synthesized by a one-step hydrothermal reaction. N, S-CQDs can rely on the presence of –OH, C=O, –NH2, and ether bonds on their surfaces and the formation of hydrogen bonds by ciprofloxacin (CIP) containing Ar-F and –COOH functional groups to achieve effective charge transfer. In addition, CIP forces N, S-CQDs to aggregate to form cross-linked structures, which effectively limits the vibration and rotation of N, S-CQDs, leading to enhanced fluorescence of N, S-CQDs. Based on the above intermolecular charge transfer and AIEE between N, S-CQDs and CIP, an efficient and sensitive nano fluorescent probe for the detection of CIP in real water samples was developed, which can achieve sensitive detection of 3.33 × 10−8–1.13 × 10−6 M CIP.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2022
·
IF 4.966
Jia Zheng,Zhaoxi Zhou,Lihong Zhu,Qihui Chen,Maochun Hong,Heqing Fu
A novel room temperature self-healing carbonyl iron powder/ polydopamine@ multi-walled carbon nanotubes (CIP/PDA@MWCNTs) composites as microwave absorber covering the whole X frequency band were prepared in this study. In order to improve the impedance matching and dispersion of CIP in composites, it was encapsulated by PDA to form a core-shell structure. Meanwhile, the polydopamine modified carbonyl iron powder (CIP/PDA) was mixed with MWCNTs to enhance the performance of microwave absorption , so that the the composites possessed dielectric and magnetic losses. Moreover, the composites have self-healing property. When the content of CIP/PDA@MWCNTs is 20 wt%, the minimum reflection loss of the self-healing composites is −30.69 dB, and the bandwidth of RL less than -10 dB can reach up to 9.44 GHz, covering the entire X. Therefore, this room temperature self-healing CIP/PDA@MWCNTs composite will become an ideal microwave absorbing material for novel function device.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2023
·
IF 4.3
Huanhuan Li,Qiyi Bei,Bingshan Li,Suleiman A. Haruna,Murugavelu Marimuthu,Mehedi Hassan,Zhen Ding,Quansheng Chen
A novel enzymatic biosensor was developed for the determination of ciprofloxacin (CIP) using upconversion nanoparticles (UCNPs) and the color development strategy of potassium titanium oxalate (PTO). The presence of CIP triggers the specific recognition of CIP by the aptamer, which leads to the dissociation of PDA-encapsulated magnetic nanoparticles (Fe 3 O 4 @PDA-Apt) from the horseradish peroxidase-functionalized UCNPs (cDNA-UCNPs-HOR) and facilitates fluorescence recovery. Accordingly, CIP demonstrated the ability to indirectly alter the quantity of H 2 O 2 , where PTO could selectively interact with H 2 O 2 , leading to the formation of yellow peroxo-titanic acid, which enabled the colorimetric detection of CIP. Under ideal conditions, the linear ranges for fluorescence and colorimetry were 10–1000 µg L −1 and 100–1000 µg L −1 , respectively, with detection limits (LOD) of 2.1 and 16.7 µg L −1 . Finally, the precision and accuracy of the method were validated with HPLC and achieved satisfactory results ( P > 0.05).
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Shu Wang,Xin Li,Yiwei Wang,Wenlong Yang,Shuang Han,Hui Zhang
The persulfate (PMS)-activated photo-Fenton system has emerged as a promising solution for addressing severe environmental contamination, owing to its efficient generation of strongly oxidizing free radicals. Herein, we present a magnetically recyclable CdS/CoFe 2 O 4 S-scheme heterostructure with broad-spectrum response, demonstrating exceptional performance in degrading ciprofloxacin (CIP) and high-concentration rhodamine B (RhB). A mild synthesized strategy was used to construct CdS/CoFe 2 O 4 composite, meanwhile, experimental characterizations and theoretical calculations were combined to exhibit the phase structure, interface heterojunction, surface chemical state, energy band structure, surface photovoltage, charge transfer mechanism, and magnetic property. In our work, the best degradation rates of CIP and RhB are 5.63 μmol·min −1 ·g -1 cat. and 13.91 μmol·min −1 ·g -1 cat. , respectively, with the contribution order of reactants to be h + >·SO 4 - >·O 2 – >·OH, which proves a synergy effect on the production of reactive oxygen free radicals and available photogenerated charge to boost the photo-Fenton applications. This work opens a new avenue for the construction of low-cost, high-efficiency, and magnetic recycling semiconductor heterojunction for enhanced photo-Fenton applications.
研究领域:
环境科学
·
材料科学
·
化学工程
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产品关联
DOI
高影响因子
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