CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Kamran Ashraf,Zebo Liu,Qamar uz Zaman,Muhammad Arshad,Waqas Qamar Zaman,Ali Shan,Junxiong Yu,Touseef ur Rehman,Yingping Zhuang,Meijin Guo,Ali Mohsin
Elicitation is a potent strategy to enhance secondary metabolite yield, and nanoparticle-mediated elicitation offers a compelling alternative to traditional methods. Carthamus tinctorius ( C. tinctorius ) is rich in bioactive chlorogenic acids (CGAs) within its suspension cells. However, the mechanism by which doped nanoparticles (NPs) stimulate the CGAs biosynthesis in the cells remains unclear. Therefore, this study first elucidated the synthesis and characterization of selenium (Se)-doped CeO 2 @Fe 3 O 4 NPs and then explored their regulatory effect and mechanism for the CGAs biosynthesis in C. tinctorius cells. Material characterization via TEM, XPS, XRD, and EDX analysis confirmed the successful synthesis of selenium-dopped CeO 2 @Fe 3 O 4 nanocomposite. Fe 3 O 4 , CeO 2 , Fe 3 O 4 @CeO 2 , and selenium-dopped CeO 2 @Fe 3 O 4 NP treatments all promoted the biosynthesis of CGAs in the cells. Notably, the group treated with 15 mg L -1 selenium-dopped CeO 2 @Fe 3 O 4 NPs showed best effect (37.04 mg g −1 , 1.92 times that of control). Finally, metabolome and transcriptome profiling revealed the differential alterations in the content of 45 primary metabolites and differential expression of 83 CGA biosynthesis-related genes. This suggested that selenium-doped CeO 2 @Fe 3 O 4 NPs up-regulated the expression of CGA biosynthesis-related genes, and consequently enhanced CGAs accumulation in the cells. This study provides the first evidence that selenium-doped CeO 2 @Fe 3 O 4 acts as nano-elicitors for the biosynthesis of CGAs.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Qunling Fang,Jing Wang,ShanShan Wu,Ken Cham-Fai Leung,Yunqi Xu,Shouhu Xuan
Pathogenic bacteria and difficult-to-degrade pollutants in water have been serious problems that always plague people. Therefore, finding a “one stone-two birds” method that can quickly catalyze the degradation of pollutants and show effective antibacterial behavior become an urgent requirement. This work reports a facile one-step strategy for fabricating a Rambutan-like Fe 3 O 4 @AgAu@PDA (Fe 3 O 4 @AgAu@Polydopamine) core/shell nanosphere with both catalytic and antibacterial activities which can be critically improved by externally applying an NIR laser irradiation (NIR, 808 nm) and a rotating magnetic field. Typically, the Rambutan-like Fe 3 O 4 @AgAu@PDA nanosphere have a rather rough surface due to the AuAg bimetallic nanorods sandwiched between the Fe 3 O 4 core and the PDA shell. Owing to the penetrated PDA shell, AgAu nanorods show high and magnetically recyclable photothermal-enhanced catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol and they can also be applied to initiate TMB oxidation under the help of NIR heating condition. Moreover, Fe 3 O 4 @AgAu@PDA shows a moderate antibacterial activity due to the weak release of Ag + . Under applying a rotating external magnetic field, the rough-surface Fe 3 O 4 @AgAu@PDA nanospheres produce a controllable magnetolytic force on the bacterial due to their good affinity. As a result, the Fe 3 O 4 @AgAu@PDA nanospheres show a "magnetolytic-photothermal-Ag + " synergistic antibacterial behavior against E. coli and S. aureus .
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JOURNAL OF SEPARATION SCIENCE
·
2019
·Vol. 42
·期 5
·1058-1066
·
IF 2.516
Yingying Feng,Xiaopeng Hu,Faqiong Zhao,Baizhao Zeng
A novel magnetic adsorbent Fe 3 O 4 /reduced graphene oxide-carbon nanotubes, was prepared by one-pot solvothermal synthesis method. It was characterized by scanning electron microscopy, X-ray powder diffraction and vibrating sample magnetometry. The diameter of Fe 3 O 4 microparticles was about 350 nm, which were covered by carbon nanotubes and reduced graphene oxide sheets, while carbon nanotubes inserted between the reduced graphene oxide sheets effectively prevented their aggregation. The composite had large surface area and good magnetic property, suiting for magnetic solid-phase extraction and the determination of sulfonamides, by coupling with high-performance liquid chromatography. Under the optimized conditions (including extraction time, amount of adsorbent, solution pH, ionic strength and desorption conditions), a good linear was achieved in the concentration range of 5–500 μg/L and the low limits of detection and low limits of quantification were 0.35–1.32 and 1.16–4.40 μg/L, respectively. The enrichment factors were estimated to be 24.72 to 30.15 fold. The proposed method was applied for the detection of sulfonamides in milk sample and the recoveries were 88.4–105.9%, with relative standard deviations of 0.74–5.38%.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2018
·
IF 2.873
Yongchuan Liu,Xiaofei Miao,Xiangxin Zhang,Sujing Chen,Yuanqiang Chen,Jian Cheng,Wei Wang,Yining Zhang
Combining graphene with iron oxide has shown great promise in mitigating the pulverization of iron-oxide anode during fast charge/discharge in lithium-ion batteries. However, the attachment between hydrophilic iron oxide and hydrophobic graphene sheets could potentially compromise during cycling, affecting its cycling stability. By exploiting the polymerization characteristics of pyrrole, we anchor and subsequently wrap the Fe(OH) 3 colloidal nanoparticles onto graphene oxide surface with polypyrrole. The composite is further annealed to give polypyrrole-derived-carbon (PPy-C) wrapped Fe 3 O 4 @graphene (Fe 3 O 4 @graphene@PPy-C). PPy-C strengthens the interaction between the Fe 3 O 4 and the graphene and helps preserving the structural integrity during cycling. As an anode material, Fe 3 O 4 @graphene@PPy-C composite exhibits a high reversible capacity of 721 mA h g −1 over 320 cycles at a current density of 0.2 A g −1 . Even at a high current density of 2 A g −1 , the electrode still achieves a high capacity of 406 mA h g −1 . This strategy provides a new alternative to improve the cycling stability of iron-oxide/carbon composite anodes.
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JOURNAL OF SEPARATION SCIENCE
·
2016
·Vol. 39
·期 19
·3818-3826
·
IF 2.741
Zhaoqian Li,Yazhen Li,Mengyu Qi,Shuxian Zhong,Weiping Wang,Ai-Jun Wang,Jianrong Chen
Graphene-Fe 3 O 4 nanoparticles were prepared using one-step solvothermal method and characterized by X-ray diffraction, FTIR spectroscopy, scanning electron microscopy, and vibrating sample magnetometry. The results demonstrated that Fe 3 O 4 nanoparticles were homogeneously anchored on graphene nanosheets. The as-synthesized graphene-Fe 3 O 4 nanoparticles were employed as sorbent for magnetic solid-phase extraction of sulfonamides in milk prior to capillary electrophoresis analysis. The optimal capillary electrophoresis conditions were as follows: 60 mmol/L Na 2 HPO 4 containing 2 mmol/L ethylenediaminetetraacetic acid disodium salt and 24% v/v methanol as running buffer, separation voltage of 14 kV, and detection wavelength of 270 nm. The parameters affecting extraction efficiency including desorption solution, the amount of graphene-Fe 3 O 4 nanoparticles, extraction time, and sample pH were investigated in detail. Under the optimal conditions, good linearity (5–200 μg/L) with correlation coefficients ≥0.9910 was obtained. The limits of detection were 0.89–2.31 μg/L. The relative standard deviations for intraday and interday analyses were 4.9–8.5 and 4.0–9.0%, respectively. The proposed method was successfully applied to the analysis of sulfonamides in milk samples with recoveries ranging from 62.7 to 104.8% and relative standard deviations less than 10.2%.
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高影响因子
MICROCHEMICAL JOURNAL
·
2018
·
IF 2.746
Kai Hu,Jingyi Qiao,Xiangxiang Wu,Huaixia Yang,Yanjie Huang,Shusheng Zhang
A novel magnetic sorbent has been synthesized by co-polymerization of calixarene ionic liquid and mercaptan-modified Fe 3 O 4 particles. This material was used as a sorbent for dispersive solid phase extraction of trace-level flavonoids in the samples of bottled fruit juice and green tea without other pre-treatments. The experimental parameters were investigated and optimized. Coupled with high performance liquid chromatography, an analytical method was established and successfully applied to the determination of flavonoids in these beverages. The proposed method showed good linearity for the analytes with a correlation coefficient ( r ) > 0.9982, and detection limits for the flavonoids ranged 0.15–0.75 ng mL −1 were achieved. The proposed method has been used successfully to determine flavonoids in bottled fruit juice and green tea samples with satisfactory recoveries of 92.5–104.8% and relative standard deviations ≤ 5.2%. The results suggest that poly(calixarene ionic liquid) modified Fe 3 O 4 nanoparticles can be used in the extraction of flavonoids in beverage samples.
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高影响因子
JOURNAL OF RAMAN SPECTROSCOPY
·
2021
·Vol. 53
·期 2
·211-221
·
IF 3.133
Nan Jia,Yinran Xiong,Ying Wang,Siqian Lu,Ruoqiu Zhang,Yan Kang,Yiping Du
A label-free and novel surface-enhanced Raman scattering (SERS) method has been studied to rapidly detect common fish pathogenic bacteria ( Escherichia coli , Vibrio anguillarum , Vibrio harveyi , Edwardsiella piscicida , and Pseudomonas plecoglossicida ). The marriage of magnetic nanospheres (Fe 3 O 4 ) with polyethylenimine (PEI) could trigger surface charge modifications of Fe 3 O 4 , making it effective to capture negatively charged bacteria. After the rapid bacterial capture procedure within 10 min, Au@Ag core-shell bimetallic nanoparticles served as hotspot providers to facilitate the enhancement of biological Raman signals. The results demonstrated that the minimum detection limit of E. piscicida could be as low as 10 5 cfu/ml. The peak intensity at 1628 cm −1 ( E. piscicida ) showed a linear relationship with the logarithm of the bacterial concentration ( R 2 = 0.997). A mimic test was conducted by spiking E. piscicida into tap water. Linear discriminant analysis (LDA) was also harnessed to classify different types of fish bacteria. And the positive rates of the training set and the prediction set were 100% and 80%, respectively. The whole experimental procedure only takes 20 min. This method opens a new avenue for the rapid detection and identification of fish pathogenic bacteria.
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高影响因子
TALANTA
·
2018
·
IF 4.244
Wenya Feng,Juan Qiao,Junfang Jiang,Bingbing Sun,Zhiwei Li,Li Qi
Alanine aminotransferase (ALT) plays significant role in biological and clinical research. In this study, a unique ALT enzyme reactor based on multifunctional polymer@magnetic nanoparticles has been constructed for the first time and the enzymolysis efficiency has been evaluated by chiral ligand exchange capillary electrophoresis technique. Poly(N-acryloxysuccinimide) has been synthesized by reversible addition-fragmentation chain transfer polymerization method and immobilized on the magnetic nanoparticles via the succinimide group in the polymer. Interestingly, the enzyme also could easily react with the succinimide group, which enables of ALT covalent bonding onto the polymer. The enzyme amount immobilized and the immobilization time have been investigated. Comparing with free ALT in solution ( V max of free enzyme = 0.6 mM min −1 ), the resultant enzyme reactor has exhibited good reusability and stability, and displayed about five times enhanced enzymolysis efficiency with L-alanine as the substrate ( V max of enzyme reactor = 3.4 mM min −1 ). Furthermore, the prepared enzyme reactor has been applied in ALT inhibitors screening. The enzyme reactors based on the multifunctional polymer@magnetic nanoparticles have depicted great potential in anti-liver drugs development, liver diseases study and ALT related biological process inspect.
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Desalination and Water Treatment
·
2024
·
IF 1
Dian Lv
In this paper, air-dried lake sludge was pretreated by ball milling, and then pyrolysed at 600°C to prepare lake sludge-derived ball milling biochar, and Fe 3 O 4 was loaded on lake sludge-derived ball milling biochar by chemical precipitation. Scanning electron microscopy-energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction were used to investigate and characterize the adsorbents. The results demonstrated that ball mill pretreatment and Fe 3 O 4 -loaded can effectively increase the content of O-containing groups in the adsorbent. The batch adsorption experiments revealed that Cd(II) removal followed the pseudo-second- order kinetic model and the Langmuir model. Additionally, the Cd(II) maximum adsorption by biochar (BC), MBBC and Fe 3 O 4 @MBBC was 31.33, 47.36 and 92.42 mg/g, respectively. The Cd(II) removal mechanisms were complexation, ion exchange, co-precipitation and electrostatic interaction. The Cd(II) removal efficiency on Fe 3 O 4 @MBBC was maintained at 91.35% after 5 adsorption– desorption experiments, indicating that Fe 3 O 4 @MBBC had the ability to be better applied for the removal of Cd(II)-containing wastewater.
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MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 12
·1-11
·
IF 5.479
Zhao Bingshan,He Man,Chen Beibei,Hu Bin
Double imprinted polymer coated magnetic nanoparticles were fabricated with 4-nm size ZnO nanoparticles acting as the sacrifice templates, which were co-imprinted with template Pb(II) ions. After template removal, abundant transfer pores derived from ZnO nanoparticles were left around the selective adsorption sites derived from Pb(II) ions. The magnetic sorbent exhibit good selectivity, rapid adsorption kinetic and large adsorption capacity for Pb(II). They were used to extract trace Pb(II) followed by graphite furnace atomic absorption spectrometry detection. After the optimization of extraction conditions, following merits are found: (a) rapid extraction (10 min), (b) high preconcentration factor (100 fold), (c) sensitive detection with the detection limit of 9.4 ng·L −1 , and (d) low relative standard deviation (6.9%) at a level of 50 ng·L −1 of Pb(II) analyzed 7 times. The method was employed in extraction and quantification of trace Pb in biological and environmental samples with satisfactory recoveries of 87.5–104%.
Double imprinted polymer coated magnetic nanoparticles (MNPs@DIP) were fabricated and used for extraction of Pb(II) followed by graphite furnace atomic absorption spectrometry (GFAAS) detection. The method was successfully applied for the determination of Pb in environmental and biological samples.
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Biomaterials Science
·
2025
·
IF 5.7
Lihui Yuwen,Yuan Liu,Fengjiao Xu,Chi Zhang,Xiaolong Chen,Zhaowei Yin,Bin Liang,Lianhui Wang
Bacterial biofilms are difficult to treat with traditional antibiotics. Ultrasound (US)-responsive antibacterial agents have emerged as promising alternatives for the treatment of bacterial biofilm infections. However, they often suffer from antibiotic dependence, lack of targeting, and low antibacterial efficiency. Herein, we develop Fe3O4/MnCO3 microbubbles (FMMB) by self-assembly of Fe3O4 nanoparticles (Fe3O4 NPs) and MnCO3 nanoparticles (MnCO3 NPs). By the direction of magnetic field (MF), FMMB can be targeted to the Staphylococcus aureus (MRSA) biofilm. Under US irradiation, FMMB can destroy the structure of MRSA biofilms by cavitation-induced mechanical effects and kill bacteria by MnCO3 NPs generated reactive oxygen species (ROS) through the sonodynamic effect. In the mice model with catheter MRSA biofilm infection, FMMB removed 70.4% of the biofilm with MF and US, and the bacteria inactivation efficiency reached as high as 99.999% (4.9 Log). This work develops multifunctional microbubbles with both US-responsive mechanical and sonodynamic effects for biofilm destruction and MF-responsive properties for biofilm targeting, which provides a promising strategy for the design of antibiofilm agents to effectively treat bacterial biofilm infections.
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产品关联
DOI
PubMed
高影响因子
Animal Microbiome
·
2025
·Vol. 8
·期 1
·2
·
IF 4.4
Herman Richard Ansah,Khurshid Marriam,Zhang Zhan-Peng,Yan Cheng-Hai,Ayepa Ellen,Li Yi-Jiang-Cheng,You Shuai,Sheng Sheng,Wang Jun
Background The gut microbiota of the silkworm ( Bombyx mori ) plays a vital role in metabolic processes, including nutrient digestion and immune regulation. However, the specific bacterial communities that enhance feed utilization and improve amino acid composition in silk and pupae remain unclear. In this study, we explored the mechanisms through which gut bacteria influence nutritional efficiency and the biosynthesis of high-quality silk and pupae by exposing fifth-instar silkworms to magnetic Fe₃O₄@urease-doped nanoconjugates. Results Our findings revealed that Fe 3 O 4 @urease nanoconjugates had no detrimental effects on the silkworm gut. Dominant genera in the MF group included Enterococcus , Staphylococcus , Pantoea , Klebsiella and Glutamicibacter ( p < 0.05), while Linear Discriminant Analysis (LDA) and Effect Size (LEfSe) identified Dialister , Rhizobium and Parabacteroides as biomarkers. Functional prediction revealed bacteria in the Fe 3 O 4 @urease nanoconjugates treatment group were involved in metabolic activities, including amino acid synthesis, protein degradation and immune development. HPLC-LC-MS analysis revealed significantly higher levels of the amino acids Histidine (1077.06%) and Arginine (1020.45%) in the Fe 3 O 4 @urease nanoconjugates treatment group. Conclusion In summary, magnetic Fe₃O₄@urease-doped nanoconjugates effectively modulated B. mori gut microbiota, enhancing digestion and nutrient assimilation, and providing a scientific basis for the rational implementation of bacteria control for enhancing amino acid contents in silk and pupae. Graphical
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PubMed
高影响因子
危险品化学品经营许可证（带存储）