JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2018
·Vol. 18
·期 7
·4445-4456
·
IF 1.354
Liu Min-Chao,Liu Bing,Sun Xiang-Yu,Lin Hui-Chao,Lu Jia-Zheng,Jin Shu-Fang,Yan Si-Qi,Li Yan-Yu,Zhao Ping
The dose-dependent toxicity and low specificity against cancerous cells have restricted the clinical use of daunomycin (DNM). Titanium dioxide (TiO2) has been wildly used as an inorganic photodynamic therapy (PDT) agent and drug carrier. To facilitate the targeted drug delivery
and combined therapy, in the present study, TiO2-coated Fe3O4 nanoparticles (Fe3O4@TiO2 NPs) were employed to load DNM and the drug-loaded Fe3O4@TiO2-DNM Nps exhibited smart pH-controlled releasing
and satisfactory cytotoxicity as well as photocytotocity. The combination of prussian blue staining and fluorescence methods evidenced the effortless cell internalization of the fabricated Fe3O4@TiO2-DNM Nps for the cancer cells. The cell cycle status experiments
indicated that the as-prepared nanospheres arrested the S and G2/M periods of the cancer cell proliferation in the dark, and further induced the apoptosis under the irradiation of ultraviolet light. The cell apoptotic results revealed that the apoptosis induced by the Fe3O4@TiO2-DNM
Nps was in the early stage. The constructed Fe3O4@TiO2-DNM NPs have been endowed with multifunctions that allow them to selectively deliver combinatorial therapeutic payload and exhibit integrated therapeutic effectiveness to tumors.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Man-Ke Zhang,Xiang-Hua Ling,Xiao-Hui Zhang,Guo-Zhi Han
A major deficiency of the traditional Fenton technology in practical application is the production of a large amount of sludge. In this paper, we first synthesized a kind of magnetic alginate/PVA hydrogel microspheres by inverse emulsion method along with coprecipitation method. Through the cross-linking action of iron ions , sodium alginate and polyvinyl alcohol formed a stable interpenetrating network structure, in which the magnetic Fe 3 O 4 nanoparticles were stably wrapped. After drying, a novel alginate/PVA hydrogel-supported magnetic Fe 3 O 4 particles were obtained. FTIR,XRD，SEM and EDS were used to confirm the composition and structure of the composite material. Furthermore, the resultant alginate/PVA hydrogel-supported Fe 3 O 4 particles perform excellent broad-spectrum catalytic activity for Fenton degradation of organic dyes. Especially, compared with the classical Fenton catalyst, the double-crosslinked structure in the alginate/PVA hydrogel endows the magnetic Fe 3 O 4 particles with high stability and recyclability. After reuse for six times, the mass loss of the composite material is only 10 %, which can avoid the generation of iron sludge in Fenton-like reaction to the greatest extent.
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高影响因子
JOURNAL OF POWER SOURCES
·
2013
·
IF 4.675
Yingqiang Huang,Yingju Liu,Zhuohong Yang,Jinliang Jia,Xin Li,Yan Luo,Yueping Fang
A novel yolk/shell Fe 3 O 4 –polydopamine–graphene–Pt (Fe 3 O 4 @PDA/RGO/Pt) nanocomposite is synthesized using polydopamine as a moderate modifier for graphene as well as a coupling agent for the assembly of Pt nanoparticles . The morphology and structure of the as-prepared catalysts are characterized by transmission electron microscopy , X-ray photoelectron spectroscopy, X-ray diffraction and Fourier transform infrared spectroscopy. The detailed formation mechanism of such yolk/shell nanocomposite is discussed. Subsequently, its catalytic activity towards the methanol oxidation is evaluated by cyclic voltammetry , chronoamperometry , electrochemical impedance spectra and CO-stripping voltammetry. Results show that such york/shell Fe 3 O 4 @PDA/RGO/Pt exhibits higher electrochemical activity and stability to methanol oxidation than Pt/graphene, which is not only attributed to the synergetic cocatalytic effect at the heterojunction interfaces between the Pt nanoparticles and the support, but also due to the high immobilization of Pt nanoparticles by the functional groups of polydopamine. In addition, the separation ability of Pt nanoparticles from the nanocomposite by Fe 3 O 4 can decrease the CO poison from free Pt nanoparticles. Therefore, this unique yolk/shell nanocomposite may be suitable for the production of catalysts with low-cost and high activity.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2019
·
IF 5.256
Mingqian Wang,Ying Liang,Zhicheng Zhang,Guohong Ren,Yajun Liu,Shishan Wu,Jian Shen
Novel multifunctional core-shell nanoparticles (NPs) have attracted widespread attention due to their easy-to-modify surface properties and abundant functional groups. This study introduces a facile approach to synthesize Ag@ iron oxide (Fe 3 O 4 ) @C NPs, and modify with amino-poly (ethylene glycol) (PEG)-carboxyl and folate (FA) on the exposed carbon surface to produce high contrast for excellent stability, good biocompatibility, cancer cell targeting, and synergistic treatment. The multi-armed PEG at the edge of Ag@Fe 3 O 4 @C NPs provides the materials an excellent capacity for doxorubicin (DOX) loading. The carbon layer could be used as a photothermal reagent due to its excellent near-infrared (NIR) absorbance capacity, and Fe 3 O 4 was used as a reagent for magnetic resonance (MR) imaging. In vivo combination therapy with this agent was administered in a mouse tumor model, and a remarkable synergistic antitumor effect that is superior to that obtained by monotherapy was achieved. Concerning these features together, these unique multifunctional Ag@Fe 3 O 4 @C-PEG-FA/DOX NPs could be regarded as an attractive nanoplatforms for chemo-photothermal synergistic tumor therapy with dual-modal fluorescence and MR imaging-guided targeting.
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PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qi Yu,Zhengqian Zhang,Yiming Tang,Daming Zheng,Heng Dai,Zhanyu Cao
Three-dimensional (3D) graphene exhibits great potential for microwave absorption due to its ultra-light density, large specific surface area, good conductivity, and mechanical compressibility, integrating material and structural features across different scales to achieve high-efficiency broadband absorption remains a significant challenge. In this study, graphene foam (GF) anchored with different content of Fe 3 O 4 hollow microspheres was initially synthesized via a solvothermal method. Subsequently, multilayer microwave absorbing materials were designed using a genetic algorithm (GA) by combining various Fe 3 O 4 /GF composites with distinct electromagnetic parameters for broadband absorption performance. The as-fabricated multilayer composite possesses an impedance-gradient architecture and exhibits an ultrawide absorption bandwidth of 9.27 GHz at a matching thickness of 2.8 mm, thereby validating the GA design strategy. Moreover, radar cross-section (RCS) simulations demonstrate that the multilayer Fe 3 O 4 /GF composite with a thickness of 2.0 mm achieves a maximum RCS reduction of 48.64 dB m 2 at 10.61 GHz. This work presents an efficient approach for developing high-performance microwave absorbing materials with multilayer gradient structures.
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产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Anni Yang,Yumeng Jiang,Huiqun Ju,Tianyu Li,Jiafei Lyu,Xianghai Guo
This study proposed a precise synthetic strategy for tailoring the surface chemistry of magnetic nanomaterials and established a structure–performance relationship between surface hydroxyl density and boric acid adsorption. By modulation of the molar ratio of oleic acid to the iron source in the solvothermal reaction, a gradient control of hydroxyl density on the surface of Fe3O4 nanoparticles was systematically achieved. A novel fluorine substitution XPS method was employed to quantitatively characterize the hydroxyl density, yielding a normalized F/Fe ratio range of 0.195–0.326, which validated the feasibility and controllability of the “fine-tuning” approach. As the hydroxyl density increased, the adsorption capacity of the material increased from 0.7 to 1.5 mmol/g. Comprehensive analysis of boric acid adsorption, including adsorption kinetics, isotherms, thermodynamics, and material characterization before and after adsorption, demonstrated that the adsorption mechanism primarily involved bidentate hydroxyl complexation via a trigonal coordination configuration. These findings provide a reproducible framework for surface modification of magnetic nanomaterials and offer experimental guidance for designing high-performance boric acid adsorbents.
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PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2019
·Vol. 26
·期 27
·27712-27725
·
IF 2.914
Zhuan Run,Wang Jianlong
Antibiotics are becoming ubiquitous emerging contaminants in the aquatic environments due to their large amount of production and extensive application, which have received increasing public concern. In this paper, the degradation and mineralization of sulfamethoxazole (SMX) by ionizing radiation in the presence of Fe 3 O 4 as Fenton-like catalyst were evaluated, the influencing factors, such as the initial SMX concentration, initial pH, water matrix, and radical scavenger, etc. were examined. The results demonstrated that SMX could be efficiently degraded. The addition of Fe 3 O 4 could improve the degradation efficiency of SMX and increased the dose constant at various SMX initial concentrations. More than 98% of SMX was degraded in Fe 3 O 4 /gamma radiation system at a wide range of pH (about 3.0–11.0). The mineralization of SMX in the presence of Fe 3 O 4 was increased by 200%. Adding free radical scavenger (tert-butyl alcohol) inhibited the degradation of SMX. The addition of Fe 3 O 4 enhanced the dose constant of ·OH, indicating that Fe 3 O 4 promoted the formation of hydroxyl radicals (·OH) and then improved SMX degradation and mineralization. The degradation efficiency of SMX in secondary effluent of WWTP decreased from 100 to 84% in secondary effluent compared with that in deionized water. The intermediate products during the degradation of SMX by ionizing radiation were identified by high-performance liquid chromatography, and a possible pathway of SMX degradation in such a system was tentatively proposed.
Schema illustration of SMX degradation by irradiation in the presence of Fe 3 O 4
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高影响因子
Desalination and Water Treatment
·
2014
·
IF 0.987
Shuhua Zhong,Huaili Sha,Yu He,Gongwu Song
In this work, tobermorite/SiO2/Fe3O4 composites were designed and synthesized by hydrothermal method for the treatment of phosphorus in wastewater. The composites were characterized by scanning electron microscopy and X-ray diffraction. The removal efficiency of phosphorus on the tobermorite/SiO2/Fe3O4 composites was carried out and investigated under various conditions, such as contact time, sorbent content, and pH. After the multi-run experiments, the phosphorous elimination of the tobermorite/SiO2/Fe3O4 composites was declined slightly comparing with the first-run experiments. Compared with the conventional crystallization methods, tobermorite/SiO2/Fe3O4 composites not only gave high efficiency to remove phosphorus from wastewater without any complicated pretreatment, but also provided excellent magnetic properties for separating the phosphorus from water, which made it easy recycled. Moreover, tobermorite/SiO2/Fe3O4 composites had excellent P-elimination properties even in the strong acidic or basic conditions. Therefore, tobermorite/SiO2/Fe3O4 composites were important candidate for water quality control and protection.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2014
·
IF 4.058
Shuzhen Li,Yibin Gong,Yichang Yang,Chun He,Lingling Hu,Linfei Zhu,Lianpeng Sun,Dong Shu
This paper presents the synthesis of magnetic carbon nanotube adsorbents, CNTs/Fe 3 O 4 nanocomposites, in which carbon nanotubes (CNTs) were grafted to magnetic Fe 3 O 4 particles by a facile hydrothermal method. The prepared CNTs/Fe 3 O 4 nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), the Brunauer–Emmett–Teller (BET) surface areas, and magnetic property measurements. The adsorption behaviors of the CNTs/Fe 3 O 4 nanocomposites were evaluated for the removal of bisphenol A (BPA) in aqueous solution. It was found that the CNTs/Fe 3 O 4 nanocomposites exhibited strong adsorption behavior for BPA in aqueous solution, and the adsorption of BPA onto the CNTs/Fe 3 O 4 followed the Freundlich adsorption isotherm rather than the Langmuir adsorption isotherm. Moreover, the CNTs/Fe 3 O 4 nanocomposites used, which were separated via an external magnetic field, were independently regenerated by methanol-wash or chemical oxidation methods (Fe 2+ /H 2 O 2 , Na 2 SO 3 /Fe 2+ , or UV/H 2 O 2 ). The results demonstrated that as a recyclable adsorbent, CNTs/Fe 3 O 4 nanocomposites can maintain a high recovery extent (∼98%) via magnetic separation and retain their adsorption behavior within the limits (±1.34) after several adsorption–deactivation–regeneration cycles.
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高影响因子
IONICS
·
2020
·Vol. 26
·期 10
·4859-4867
·
IF 2.394
Yang Xiaoqing,Wu Huimin,Wang Shiquan,Cheng Fangyi,Feng Chuanqi,Liu Kuakun
The CeVO 4 /Fe 3 O 4 compound is successfully obtained by combining hydrothermal treatment and water bath process. The final product has been characterized by X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy techniques. The electrochemical properties of the expected compound were tested by a battery test system. The obtained CeVO 4 /Fe 3 O 4 composite shows higher specific capacity and better cyclability than pure CeVO 4 prepared under the same conditions. The initial discharge specific capacities of CeVO 4 and CeVO 4 /Fe 3 O 4 are 671.7 and 964.0 mAh·g −1 , respectively. After 100 cycles, CeVO 4 and CeVO 4 /Fe 3 O 4 still maintained their discharge capacities at 416.4 and 875.9 mAh·g −1 , representing capacity retention rates of 62.0% and 91.0%, respectively. The possible reaction mechanism for the CeVO 4 /Fe 3 O 4 composite is also discussed. The CeVO 4 /Fe 3 O 4 composite may be a prospective anode material for the lithium-ion battery.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Jiangkun Du,Jianguo Bao,Ying Liu,Sang Hoon Kim,Dionysios D. Dionysiou
Metal oxides are potentially interesting catalysts for activating peroxymonosulfate (PMS) for the degradation of recalcitrant contaminants. This study presents a magnetic porous Mn-Fe binary oxide (p-Mn/Fe 3 O 4 ) in micron-size with abundant micro- and meso- pores. This novel catalyst exhibited high efficacy and long-term stability in activating PMS for degradation of bisphenol A (BPA). Sulfate radicals and hydroxyl radicals were identified from catalytic PMS activation according to electron paramagnetic resonance (EPR) characterization. The effects of Fe/Mn ratio, catalyst dose, initial pH and temperature were investigated. Compared to monometallic oxides, p-Mn/Fe 3 O 4 exhibited a better catalytic performance because of the significant synergy between Mn and Fe species. Several BPA intermediates were identified. On the basis of bio-toxicity assay and TOC measurements, BPA transformed to some toxic intermediates during the initial reaction stage, and then decomposed efficiently to low toxicity products and mineralized to carbon dioxide and water molecules. This study shows that p-Mn/Fe 3 O 4 is an efficient and environmentally benign catalyst for PMS oxidation of organic pollutants.
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高影响因子
Journal of Nanomaterials
·
2013
·
IF 1.547
Yaohui Xu,Yang Zhou,Wenhui Ma,Shixing Wang
The magnetic Fe3O4@SiO2 nanoparticles (NPs) functionalized with 8-chloroacetylaminoquinoline as a fluorescent sensor for detection and removal of Zn2+ have been synthesized. The core-shell structures of the nanoparticles and chemical composition have been confirmed by TEM, XRD, FTIR, and XPS techniques. The addition of functionalized Fe3O4@SiO2 NPs into the acetonitrile solution of Zn2+ had an effect of visual color change as well as significant fluorescent enhancement. High-saturated magnetizations (24.7 emu/g) of functionalized Fe3O4@SiO2 NPs could help to separate the metal ions from the aqueous solution. The magnetic sensor exhibited high removal efficiency towards Zn2+ (92.37%). In this work, we provided an easy and efficient route to detect Zn2+ and simultaneously remove Zn2+.
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高影响因子
危险品化学品经营许可证（带存储）