APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Guowen Qian,Lemin Zhang,Yang Shuai,Xiongting Wu,Zhikui Zeng,Shuping Peng,Cijun Shuai
There is an increasingly growing demand for rapid and safe sterilization strategies to overcome implantation-associated infection. Herein, a NIR light-triggered antimicrobial heterojunction of CuFe 2 O 4 -MXene was constructed by in-situ growing CuFe 2 O 4 on Ti 3 C 2 MXene , then was homogeneously incorporated into poly (L-lactic acid) and fabricated into tracheal scaffold by selective laser technology. The tracheal scaffolds with the heterojunction not only generated hyperthermia and exogenous reactive oxygen species (ROS) under NIR light irradiation , but also depleted glutathione (GSH) in bacteria and produce endogenous ROS via Fenton(−like) reaction, thus achieving strong and persistent antibacterial cascade effect. They killed 96.49% of S. aureus and 95.33% of P. aeruginosa after NIR light irradiating for 15 min. Moreover, the tracheal scaffold with the heterojunction had excellent cytocompatibility and chondrogenic-promoting ability. This work designed the tracheal scaffold with effective antibacterial ability and cartilage regeneration function, which will bring a new dawn for the patients with tracheal injury.
研究领域:
生物材料
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组织工程
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抗菌技术
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生物医学工程
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 24
·10873-10883
·
IF 2.7
Yunxia Shi,Hui Duan,Meiyan Du,Xia Kong,Ke Xue,Guang Lu,Qingyun Liu
In this work, 2(3),9(10),16(17),23(24)-octamethoxyphthalocyanine (Pc(OH)8) was first used to modify Cu/CuFe2O4(Cu/CFO) nanospheres, and Pc(OH)8–Cu/CFO nanocomposites with enhanced peroxidase mimetic enzyme activity was obtained compared to the performance of Cu/CFO alone. SEM, XRD, and XPS were used to study the surface morphology, phase composition and elemental analysis of the newly synthesized Pc(OH)8–Cu/CFO. Using TMB as the chromogenic substrate, Pc(OH)8–Cu/CFO accelerate the oxidation process of chromogenic substrate 3,3′,5,5′- tetramethylbenzidine (TMB) by hydrogen peroxide in three minutes. The catalytic oxidation mechanism of Pc(OH)8–Cu/CFO on TMB was comprehensively investigated through free radical and fluorescence probe experiments. Based on the excellent catalytic performance of the composite materials, a simple and fast colorimetric sensing platform for the colorimetric detection of H2O2 and glutathione (GSH) was constructed in the range of 0.6–5 mM and 2–10 μM with detection limits (LODs) of 0.35 mM and 0.55 μM, respectively. In addition, using Pc(OH)8–Cu/CFO colorimetric detection for GSH has a lower detection limit, good selectivity and high sensitivity, which is expected to become an ideal material for GSH colorimetric detection.
研究领域:
材料科学
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纳米技术
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分析化学
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生物传感器
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产品关联
DOI
高影响因子
FUEL
·
2025
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IF 7.5
Dawei Wu,Aijia Zhang,Jing Liu,Yingju Yang
MFe 2 O 4 (M = Ca, Mn, Co, Ni, Cu and Zn) spinel sorbents were synthesized by a low-temperature sol–gel auto-combustion method for arsenic adsorption from flue gas. CuFe 2 O 4 spinel exhibited the highest arsenic removal performance among these sorbents, and the adsorption capacity reached 14.09 mg/g at 800 °C. The pseudo-first order, pseudo-second-order and Elovich kinetic models can well predict arsenic removal process, which indicates that the mass transfer and chemisorption processes are important during arsenic capture by CuFe 2 O 4 . The impact of incineration flue gas components on As 2 O 3 adsorption was elucidated. It was found that HCl showed negligible effect on arsenic removal by CuFe 2 O 4 sorbent while CO 2 , H 2 O, SO 2 and NO played inhibition roles. X-ray photoelectron spectroscopy results revealed that the adsorbed arsenic exists in the forms of As 3+ and As 5+ on the sorbent surface. The chemisorption and oxidation mechanisms are responsible for arsenic adsorption by CuFe 2 O 4 . The toxicity characteristic leaching procedure and sequential extraction experiments demonstrated that arsenic can be considerably immobilized in the CuFe 2 O 4 sorbent. The high arsenic capture capacity, excellent HCl resistance and low risk of secondary contamination make CuFe 2 O 4 an efficient sorbent for gaseous arsenic capture.
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 CROPS AND PRODUCTS
·
2024
·
IF 5.6
Liu Yang,Yu-Han Sun,Xian-Xian Ji,Yuan-Zhen Wang,Yu-Long Liu,Ying Fu,Fei Ye
Triflumuron is an insect growth regulator belonging to the class of insecticides. It finds its primary application in the agricultural sector for the control of various pests, particularly certain beetles, aphids, locusts, and mites. In this paper, a Cu/Fe-BTC composite was synthesized through a straightforward solvothermal approach, subsequently employed as a precursor for the fabrication of an electrochemical sensor denoted as CuFe 2 O 4 @C . The latter exhibited a distinctive core-shell architecture achieved through annealing, and its application was focused on the sensitive detection of triflumuron. The electrochemical behaviour of CuFe 2 O 4 @C for the detection of triflumuron was evaluated by differential pulse voltammetry (DPV) under optimal conditions in wide concentrations from 1.0 × 10 −4 to 1.0 × 10 −12 mol·L −1 , where there existed a superior linear relationship between the current and the concentration of triflumuron with R 2 being 0.995. Meanwhile, CuFe 2 O 4 @C had a low limit of detection (LOD) of 922 fM for triflumuron. The CuFe 2 O 4 @C/GCE exhibited remarkable sensitivity, long-term stability, excellent reproducibility, and repeatability, as well as effective anti-interference capabilities. Additionally, CuFe 2 O 4 @C demonstrated its applicability for the quantitative determination of triflumuron in diverse real samples with commendable recovery rates. In conclusion, the electrochemical sensor not only displayed exceptional performance in terms of stability, reproducibility, and anti-interference, but also showcased its practical utility in quantifying triflumuron across various real-world samples.
研究领域:
农业科学
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分析化学
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DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2019
·Vol. 95
·期 1
·196-204
·
IF 2.659
Dongmei Jia,Min Liu,Jiangbao Xia,Changhai Li
BACKGROUND The excess use of glyphosate in both agricultural and nonagricultural areas has led to tremendous health (e.g. cardiac and respiratory impacts) and environmental concerns worldwide. There is an urgent need to find efficient ways to remove glyphosate residue from the aqueous environment. RESULTS Herein, an effective method for the removal of aqueous glyphosate is developed by employing nano-CuFe 2 O 4 modified biochar (BC) as an adsorbent. The CuFe 2 O 4 @BC adsorbents were prepared through hydrolyzing phragmite powders at 500 °C, followed by a simple coprecipitation method. The influence of initial glyphosate concentration, temperature, pH, time and coexisting species on the adsorption behavior of CuFe 2 O 4 @BC to glyphosate were fully examined. CONCLUSION It was found that the adsorption of glyphosate onto CuFe 2 O 4 @BC is highly dependent on the initial glyphosate concentration, pH and temperature, as well as coexisting species. The Freundlich and Langmuir models fitted the equilibrium isotherm data well, indicating the presence of both physisorption and chemisorption. In addition, the adsorption kinetic is well described by the pseudo-second-order kinetic model, which indicated that chemical adsorption may dominate the adsorption process. The CuFe 2 O 4 @BC adsorption of glyphosate presented a maximum adsorption capacity of 269.4 mg g −1 within 240 min, under 600 mg L −1 of glyphosate solution at 298 K and pH 4; this performance exceeds all other biochar-derived adsorbents for the removal of aqueous glyphosate encountered in the open literature. Such a cost-effective, high-performance adsorbent shows a great potential for the removal of aqueous glyphosate in industry. © 2019 Society of Chemical Industry
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
·
IF 4.65
Pulin Hao,Mingzhu Hu,Rong Xing,Wenjun Zhou
Methylparaben (MeP), as emerging contaminants widely used in pharmaceuticals and personal care products , have potential endocrine disrupting effect. In this study, the copper ferrite (CuFe 2 O 4 ) nanoparticles were uniformly distributed on graphene oxide (GO), and the performance and mechanism of CuFe 2 O 4 -rGO composites in activating persulfate (PS) for MeP degradation were comprehensively investigated. Results showed that the CuFe 2 O 4 -rGO composites exhibited much better efficiency for MeP degradation than CuFe 2 O 4 , and the synergistic effect between CuFe 2 O 4 and GO in CuFe 2 O 4 -rGO composite was also observed. The best catalytic performance of CuFe 2 O 4 -rGO composites was obtained at the mass ratio of 4:1 for CuFe 2 O 4 to GO and at neutral pH. X-ray photoelectron spectroscopy (XPS) results suggested that graphene in the composites mainly served as an electron shuttle to mediate electron transfer reactions. Electron paramagnetic resonance (EPR) and the quenching experiments further revealed that both hydroxyl and sulfate radicals were the major reactive species, and non-radical process also occurred during the reaction. Meanwhile, the degradation pathways of MeP involving hydroxylation, decarbonylation and ring opening were rationally proposed based on computational method and intermediates identification. All these results could provide insight into persulfate activation by CuFe 2 O 4 -rGO nanocomposites in environmental control applications.
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
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Donglin Liu,Mengjun Liu,Ying Wan,Xuesu Zhou,Shiping Yang,Lu An,Gang Huang,Qiwei Tian
Chemodynamic therapy (CDT) is a newly emerged, minimally invasive treatment with high selectivity, few side effects, and good prospects for clinical application. However, CDT does not effectively inhibit the growth of colon cancer, which has a strongly reducing tumor microenvironment owing to a high endogenous expression of H 2 S. To overcome this limitation, a new strategy is proposed to enhance the CDT of colon cancer by remodeling the microenvironment through depletion of endogenous H 2 S by CuFe 2 O 4 nanoparticles. After H 2 S depletion, the valence of Cu (II) and Fe (III) in CuFe 2 O 4 particles is reduced to Cu (I) and Fe (II) and photothermal properties of the nanoparticles are activated, both these effects enhance CDT. Further, in vitro and in vivo results demonstrate that endogenous H 2 S depletion by CuFe 2 O 4 particles induced three effects that synergistically enhanced the performance of CDT. In this study, the development of a new strategy to enhance the CDT of colon cancer is reported.
研究领域:
癌症研究
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纳米技术
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治疗学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Kui Tang,Xiaoyuan Chen,Zhenhua Tang,Zhao Qin,Kangzhen Xu,Ruiqi Shen,Tuan Zhao,Suhang Chen
The microwave ignition holds potential in the ignition of weapons due to its simple structure, non-contact property, and simultaneous ignitions of large area. However, the long ignition delay time of the current ignition agents cannot meet the microwave weaponry advancements. To address the issues, a microwave sensitive oxide-CuFe 2 O 4 (CUFO) which was firstly discovered to be easily ignited by microwaves compared many ferrites, was coupled with Ti nanoparticles (n-Ti) to form Ti/CUFO microwave ignition agents by electrostatic spray granulation. The characterization of microwave ignition, volumetric combustion, burning rate and DSC were used to determine its ignition delay time and the energy release properties. It indicates that the microwave sensitivity, maximum peak pressure and pressure pressurization rate of Ti/CUFO first increases and then decreases with the promoting content of n-Ti. The Ti/CUFO at Φ = 3.5 exhibits the lowest ignition delay time by 79.24 ms compared to the 98.7 ms of n-Ti, meanwhile, its maximum peak pressure and pressurization rate reach the highest by 338.54 kPa and 8.57 kPa/ms, respectively. The DSC results indicate that Ti/CUFO exhibits much lower reaction peak temperature by 320–335 °C compared to 488 °C of n-Ti, which suggests Ti-CUFO reaction maybe much easier be activated. The dielectric loss of n-Ti and CUFO under strong electric field transfer the energy of microwaves to heat, reaching to its reaction temperature. The XPS and XRD results of CUFO after microwave radiation disclosing the crystal transition, formation of divalent iron and oxygen vacancies , as well as the released bright light under microwave radiation , suggest the thermal breakdown mechanism of CUFO. When Ti/CUFO exposes into microwaves, CUFO generates oxygen vacancies due to heat loss and n-Ti is dielectric heated, followed by the generated oxygen reacting with n-Ti, improving the combustion performance of n-Ti. This result provides new insight for the designing of microwave ignition.
研究领域:
材料科学
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能源与动力工程
·
化学工程
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DOI
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6.3
Jianle Wang,Hong Deng,Jiaxin Lv,Li Ma
To overcome mass-transfer limitations in solid–liquid catalytic reactions, a microwave-assisted system was developed based on bimetallic CuFe 2 O 4 spinel for peroxymonosulfate (PMS) activation. The catalyst achieved efficient sulfamethoxazole (SMX) degradation with a remarkable rate constant of 0.36 min −1 , representing an approximately 72 times faster rate than the non-microwave CuFe 2 O 4 /PMS system and superior to most reported analogues. Additionally, the microwave-assisted CuFe 2 O 4 /PMS system demonstrated higher efficiency than the PMS-only, Fe 3 O 4 /PMS, and CoFe 2 O 4 /PMS systems, which confirms the crucial role of Cu in the spinel structure. Quenching tests confirmed that superoxide radicals ( • O 2 − ) generated at the catalyst-solution interface played a dominant role. The system exhibited excellent stability and strong anti-interference ability across a wide pH range (3.0–9.0) and against common inorganic anions (Cl − , SO 4 2− , and HCO 3 − ). Under optimized conditions (1 g ·L −1 catalyst dosage and 700 W microwave power), nearly complete SMX removal was achieved within 20 min. XRD and XPS characterization confirmed that the crystal phase and chemical state of the CuFe 2 O 4 catalyst remained stable before and after the reaction. This study presents an efficient, stable approach for removing antibiotics from water and underscores the potential of microwave-enhanced interface catalysis in advanced oxidation processes.
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产品关联
DOI
高影响因子
INFRARED PHYSICS & TECHNOLOGY
·
2017
·
IF 1.713
De-yue Ma,Xiao-xia Li,Yu-xiang Guo,Yu-run Zeng
The complex refractive index of reduced graphene oxide and CuFe 2 O 4 composites prepared by hydrothermal method was calculated using infrared Micro-reflective spectra and K-K relation, and the calculation errors were analyzed according to its IR transmission and spectral reflectivity calculated by Fresnel formula. And then normal emissivity of the composite in IR atmospheric window was calculated by means of Fresnel formula and modified refraction angle formula. The calculation accuracy was verified by comparing measured normal total emissivity with the calculated one. The results show that complex refractive index and normal emissivity calculated by the formulas have a high accuracy. It has been found that the composite has a good absorption and radiation characteristics in IR atmospheric window and a strong scattering ability in middle IR region by analyzing its extinction, absorption and radiation properties in IR region. Therefore, it may be used as IR absorption, extinction and radiation materials in some special fields.
研究领域:
材料科学
·
光学
·
红外物理
·
纳米复合材料
·
热辐射
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Lian-Kui Wu,Hao Wu,Hui-Bin Zhang,Hua-Zhen Cao,Guang-Ya Hou,Yi-Ping Tang,Guo-Qu Zheng
In this work, graphene oxide (GO) and copper ferrite composite was synthesized on Fe-Ni foam via a one-step hydrothermal method. The foam substrate not only acts as holding material for GO and copper ferrite, but also makes this adsorbent convenient to recycle. The morphology and surface composition of the graphene oxide/copper ferrite foam (GCFF) were analyzed by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectra. The adsorption behavior of As(III) and As(V) onto the GCFF was studied as a function of solution pH, temperature, contact time, initial concentrations, and competing ions. Results show this GCFF is an efficient adsorbent for arsenic with high adsorption capacities for both As(III) and As(V) owing to the synergistic effect of CuFe 2 O 4 and GO. The maximum adsorption capacities for As(III) and As(V) are 51.64 and 124.69 mg g −1 , respectively. Adsorption isotherms study indicates a Langmuir model of adsorption. In addition, the GCFF also reveals good recyclability due to the unique foam structure and the adsorption capacity is almost not deteriorated after eight recycles. Column experiment suggests that 96% As(V) can be removed from water solution after 100 bed volume test.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Zhiqiang Chen,Luyao Wang,Haodan Xu,Qinxue Wen
In order to enhance the catalytic activity of copper ferrite, CuFe 2 O 4 doped with Ce, Sn, and Sb were prepared by sol-gel combustion method, and for the first time applied as heterogeneous catalysts to activate peroxymonosulfate (PMS) for tetrabromobisphenol-A (TBBPA) degradation in aqueous solution. Morphology, elementary composition, crystal structure, and specific surface area of the obtained catalysts were characterized. The influences of catalyst dosage, PMS concentration, initial pH, common inorganic anions, and natural organic matters (NOM) on pollutant removal were comprehensively investigated, as well as the degradation process in real wastewater. It was found that 90.1% of 15 mg/L TBBPA was removed at weak basic condition in the presence of 0.2 mM PMS and 0.075 g/L Sb-doped CuFe 2 O 4 , which exhibited the best catalytic activity among all the catalyst prepared. Furthermore, the active radical species responsible for TBBPA degradation were identified as sulfate radical and hydroxyl radical by using electron spin resonance (ESR) and scavenging tests. Possible catalysis mechanism was proposed based on X-ray photoelectron spectroscopy (XPS) analysis, indicating that the surface hydroxyl groups and the interactions among surface metal species, oxygen species, and PMS were critical for maintaining high catalytic activity. Based on intermediate identification, TBBPA degradation pathway was proposed. According to all the results, the Sb-doped CuFe 2 O 4 with favorable catalytic ability, reusability and stability could be employed as a promising candidate for the activation of PMS to treat TBBPA-contaminated water.
研究领域:
环境科学
·
催化化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）