JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
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2022
·Vol. 111
·期 4
·795-804
·
IF 3.405
Qinganzi Wang,Yuemei Cheng,Wenhua Wang,Xiaolin Tang,Yongxiu Yang
Recent studies have highlighted the development prospects of magnetic hyperthermia in cancer therapy. A few studies on the application of Fe 3 O 4 nanospheres for the magnetic hyperthermia of gynecological malignancies have achieved certain efficacy, but there was no visible progress currently. In this work, Fe 3 O 4 nanospheres modified with polyetherimide (PEI) and folic acid (FA) were synthesized using a hydrothermal method for possible utility in biocompatible and active tumor-targeting magnetic induction hyperthermia. The PEI- and FA-coated Fe 3 O 4 nanospheres showed high crystallinity, well-dispersed spherical structures and ideal M s value. As a result, the designed Fe 3 O 4 @ PEI@FA nanospheres achieved higher specific absorption rate (SAR) values at 360 kHz and 308 Oe, as well as excellent biocompatibility in Hela, SKOV3, HEC-1-A and NIH3T3 cells. These nanospheres can be used as an optimal heating agent for the magnetic hyperthermia treatment of gynecological cancers.
研究领域:
生物医学工程
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肿瘤学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Particuology
·
2019
·
IF 2.616
Lei Shi,Yurong He,Yanwei Hu,Xinzhi Wang,Baocheng Jiang,Yimin Huang
Size-controlled hollow Fe 3 O 4 nanospheres were synthesized via a one-pot hydrothermal method as a function of reaction time and sodium citrate, polyacrylamide, and urea content. Multiple characterization techniques such as scanning and transmission electron microscopy and Raman spectroscopy were employed to investigate the crystal structure and morphology of the obtained nanospheres. The Fe 3 O 4 nanosphere formation mechanism was elucidated from analyzing the characterization data. High levels of sodium citrate and longer reaction times were observed to increase the diameter of the nanospheres until hollow structures formed. Furthermore, polyacrylamide and urea promoted the formation of hollow structures. The hollow-structured Fe 3 O 4 nanospheres exhibited high magnetization saturation values in the range of 48.8–58.7 emu/g. The facile synthesis method described herein, to generate size-controlled Fe 3 O 4 nanospheres with tailored properties, demonstrates potential across a wide range of fields from drug-delivery and stealth devices, to environmental and energy applications.
研究领域:
材料科学
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纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2016
·Vol. 122
·期 3
·1-6
·
IF 1.444
Yan Shaojiu,Wang Lina,Wang Tihong,Zhang Liqiang,Li Yongfeng,Dai Shenglong
We report a simple procedure to fabricate graphene oxide/carbon nanotube hybrids coated with cauliflower-like Fe 3 O 4 sphere. Characterizations have been carried out to investigate the morphology, crystalline structure of the composites by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. Fe 3 O 4 particles have the morphologies of multi-lacuna; moreover, some spheres are hollow. As a kind of potential microwave absorption material, the composites are lightweight and exhibit excellent microwave absorbing ability in the range of 2–16 GHz.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 7
·2847-2857
·
IF 3.288
Mingxing Nie,Yulian Li,Junyong He,Chao Xie,Zijian Wu,Bai Sun,Kaisheng Zhang,Lingtao Kong,Jinhuai Liu
Fe3O4 nanospheres (Fe3O4-S) synthesized via a facile one-pot solvothermal method were used for H2O2 activation and tetracycline (TC) elimination from aqueous solutions. It can be found that more than 80% of TC was degraded in the Fe3O4-S/H2O2 system. Besides, batch experiments were conducted to investigate the effects of different parameters such as catalyst dosages, H2O2 concentration, pH values and temperature on the degradation of TC, and these experimental results were also described by the pseudo-first-order model. Radical quenching experiments and an electron paramagnetic resonance (EPR) technique revealed that ˙OH and ˙O2−/˙HO2 were involved and ˙OH generated on the surface of Fe3O4-S played a main role in TC degradation. The XPS observations demonstrated that the surface FeII participated in the H2O2 activation through the redox reactions. Moreover, thirteen intermediate products were monitored by the LC–MS and possible degradation pathways of TC were accordingly proposed. The Fe3O4-S catalyst exhibited good reusability and the catalytic performance of it did not show any significant decrease even after five trials. It was worth noting that the optimal pH for TC degradation was expanded to neutral pH conditions by using the Fe3O4-S/H2O2 system. Additionally, Fe3O4-S was easily separated from the reaction solutions by virtue of its magnetism (66.8 emu g−1), which is beneficial for reuse of the catalysts.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Shaoxi Zhang,Xiangnan Chen,Zhiyong Zhang,Xiaolong Song,Guangjun Gou
Nowadays, the practical application of electromagnetic absorbing materials required lightweight, high efficiency and especially broadband. Wherein, graphene-based electromagnetic absorbing materials had received extensive attention. The conventional design was to introduce magnetic particles onto graphene, but often lead to narrow bandwidth, hard to regulate, due to the lack of intrinsic coupling between magnetic particles and dielectric graphene. In principle, defect engineering could induce intrinsic ferromagnetism into graphene while increasing dielectric polarization loss, could be an effective means of expanding and regulating electromagnetic absorbing bands. Thus, in this paper, Cu/Fe 3 O 4 heterogeneous nanospheres was constructed onsite defect-rich graphene to realize broadband electromagnetic absorbing modulation. The optimal RL value of Cu/Fe 3 O 4 /GE could reach −45.5 dB with obvious multi-band absorption, which was mainly attributed to the synergistic enhancement of defect-induced polarization loss, multiple interfacial polarization loss, as well as collaborative multipath magnetic loss. This work provides reference way for lightweight multi-band electromagnetic absorbing materials design.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2022
·
IF 3.806
Qi Qu,Huanhuan Wang,Qianpeng Dong,Yan He
In the current work, Ni-Co/CNTs networks were firstly produced by a simple annealing treatment of Ni Co PBA, which was then used as a carbon-based carrier and successfully deposited Fe 3 O 4 nanospheres via a classic hydrothermal reaction process. Additionally, the electromagnetic wave absorption performances of composites could be effectively affected by adjusting the mass ratio of the Fe 3 O 4 nanoparticles . The minimum reflection loss (RL min ) of −48.76 dB was achieved for Fe 3 O 4 @Ni-Co/CNTs-1# at 3.5 mm thickness. Meanwhile, Fe 3 O 4 @Ni-Co/CNTs-2# exhibited a wide effective absorption band (EAB) of 5.9 GHz (12.1–18 GHz) at a 2.0 mm matching thickness, suggesting that the Fe 3 O 4 @Ni-Co/CNTs composites were a promising absorber for electromagnetic wave absorption materials . Based on the synergistic effects of dielectric and magnetic losses generated by Ni-Co/CNTs and Fe 3 O 4 , respectively, and appropriately matched impedances, a new strategy for fabricating lightweight, thin-thickness, strong absorption, and wide-bandwidth materials was provided.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Fan Zhou,Jiyuan Wang,Yimei Tang,Xuhang Song,Wanrong Zhou,Yan Li,Feng Gao
Rapid and accurate monitoring of glucose concentration is of great significance in clinical diagnosis and treatment of diabetes and hence, it is necessary to develop glucose sensors of superior electro-catalytic capacity. Most literature utilize synergistic effect of nanocomposites to enhance glucose sensing performance, whereas it suffers from crucial restriction in physical and chemical characteristics of each constituents. Morphology of nanostructures significantly affects the electro-catalytic capacity, thus it is a novel route to improve glucose sensing performance to adjust morphology of nanostructures . Herein, we presented highly sensitive non-enzymatic electrochemical sensors for rapid and accurate glucose analysis with hollow Fe 3 O 4 nanospheres (Fe 3 O 4 NSs) of controllable morphologies decorated on flexible fibers. The morphologies of the Fe 3 O 4 NSs were evaluated with quantitative parameters like diameter, roundness , roughness, skewness, and kurtosis acquired from SEM images and image processing algorithms , and their effect on the interfacial characteristics and the electro-catalytic capacity of the glucose sensors was investigated. Owing to the unique spherical nanostructures and superior catalysis, the Fe 3 O 4 NSs exhibit desirable solid/liquid interface for mass diffusion and abundant active sites for sufficient oxidation of glucose. Moreover, much rounder and rougher Fe 3 O 4 NSs of near Gaussian surface are readily produced at a higher Fe 3+ concentration and result in favorable sensing performance. Accordingly, the optimal glucose sensor shows sensitivities of 96.1 ± 5.4 μA mM −1 cm −2 and 38.2 ± 2.2 μA mM −1 cm −2 over a preferable range of 0–18.0 mM, and a lower detection limit of 19.2 μM. Besides, the glucose sensors remain acceptable response after continuous testing for 20 times and repetitive bending for 50 times, and display superior selectivity to glucose and accurate analysis to practical samples. It is a facile and effective methodology to regulate the morphologies of the Fe 3 O 4 NSs for enhanced electro-catalytic capacity of glucose sensors.
研究领域:
生物医学工程
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材料科学
·
电化学传感
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Ke Yao,Jian Wei,Peidong Hong,Yulian Li,Chao Xie,Zijian Wu,Kaisheng Zhang,Minqiang Li,Junyong He,Lingtao Kong
Iron-mediated activation of peroxymonosulfate (PMS) had long been of great interest for the effective oxidation of micropollutants. However, how the chemical environment of iron oxides influence active species formation in heterogeneous Fenton processes was poorly understood. Herein, Fe 3 O 4 -X nanospheres (X = –NH 2 , –COOH) were synthesized for coordination chemical environment regulation. The DFT calculation showed the models of Fe 3 O 4 -X modified by –NH 2 and –COOH in four-coordination and six-coordination environments. Among them, Fe 3 O 4 -COOH in four-coordination environment had the lowest formation energy and highest adsorption energy combined with PMS, with a most stable system. In the adsorption model of four-coordination Fe 3 O 4 -COOH, the d-orbitals and s-orbitals energy levels of Fe atoms underwent drastic changes compared with those before adsorption, H atoms on the carboxyl group and O atoms on the PMS formed a new HO – that attached to Fe atoms, with a strong coupling between them. The simulation results confirmed the proposed activation mechanism of Fe 3 O 4 -COOH activating PMS to generate SO 4 ·- and HO – , and then partial SO 4 ·- reacted with HO – to generate ·OH, and finally the two radicals attacked tetracycline (TC) together. In Fe 3 O 4 -COOH/PMS system, Fe 3 O 4 -COOH/PMS system can convert more Fe 2+ into Fe 3+ , which also means that more Fe 2+ reacts with PMS to produce Fe 3+ and SO 4 ·- . The TC degradation efficiency of the Fe 3 O 4 -COOH/PMS system was 93%, higher than that of the Fe 3 O 4 -NH 2 /PMS system after 30 min of reaction. Consequently, this work contributes to the mechanistic insight into active species regulation during Fenton-like processes by manipulating surface groups.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Jiaping Guo,Yameng Wang,Shanshan Niu,Hongping Li,Yongmei Tian,Songcheng Yu,Fei Yu,Yongjun Wu,Li-e Liu
The aim of this study is to establish a new method with high sensitivity, accuracy, and stability for the determination of human IgG and then expand it to analyze severe acute respiratory syndrome corona virus 2 (SARS-CoV-2)-specific IgM and IgG, which is of great significance for the screening and diagnosis of COVID-19. In this study, the magnetic Fe3O4 nanospheres coupled with mouse antihuman IgG (Ab1IgG) were used as an immune capture probe (Fe3O4@Ab1IgG) to capture and separate the target, and rabbit antihuman IgG (Ab2IgG) coupled with highly luminescent quantum dot nanobeads (QBs) as a fluorescence detection probe (QBs@Ab2IgG) was used to realize high sensitivity detection. After the formation of a sandwich immunocomplex, the fluorescence intensity of the precipitate after magnetic separation was measured at the excitation wavelength of 370 nm. Under optimal conditions, a wide linear range varying from 0.005 to 40 ng·mL–1 was obtained for the detection of human IgG with a lower limit of detection at 4 pg·mL–1 (S/N = 3). The recoveries of intra- and interassays were 90.0–101.9 and 96.0–106.6%, respectively, and the relative standard deviations were 6.3–10.2 and 2.6–10.5%, respectively. Furthermore, the proposed method was successfully demonstrated to detect human IgG in serum samples, and the detection results were not statistically different (P > 0.05) from commercial enzyme-linked immunosorbent assay kits. This method is sensitive, fast, and accurate, which could be expanded to detect the specific IgM and IgG antibodies against SARS-CoV-2.
研究领域:
生物化学
·
纳米技术
·
分析化学
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免疫学
·
病毒学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2023
·
IF 5.8
Chuanbin Zhang,Meijian Wang,Jianan Zhang,Bingfang Zou,Yongqiang Wang
Superparamagnetic Fe 3 O 4 nanospheres have demonstrated great potential as important components in nanomedicine for cancer imaging and therapy. One of the major obstacles that impedes their application is the slow degradation of ingested Fe 3 O 4 nanospheres, which potentially causes long-term health risks. To tackle this issue, we proposed to fabricate Fe 3 O 4 nanospheres with mesoporous structure via a simple self-template etching method. The mesoporous Fe 3 O 4 nanospheres not only offered large specific surface area and weak-acidic responsive degradability, but also exhibited T2 -weighted magnetic resonance contrast enhancement and magnetic targeting, which made them possible to serve as excellent cancer therapeutic nanoplatform. Both inorganic photothermal therapeutic Au nanoparticles and organic chemotherapeutic doxorubicin hydrochloride were demonstrated to be successfully loaded onto such kind of nanoplatform, and the hybrid nanomedicine demonstrated synergistic photothermal and chemotherapeutic activity for tumor elimination under near infrared irradiation and improved biodegradability in weak acidic tumor microenvironment. We believe that this study paved a simple way for designing multifunctional Fe 3 O 4 -based biodegradable nanomedicine.
研究领域:
纳米医学
·
癌症治疗
·
材料科学
·
医学影像
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemElectroChem
·
2021
·Vol. 8
·期 23
·4480-4489
·
IF 4.59
Yapeng Yuan,Zhen Kong,Lei Qiao,Zhengguan Xu,Zongyu Wang,Xinghe Teng,Yuhao Dong,Xuehua Liu,Aiping Fu,Yanhui Li,Hongliang Li
Graphical Carbon-encapsulated Fe 3 O 4 nanospheres anchored on carbon nanotubes (Fe 3 O 4 /CNTs@C) have been rationally designed and fabricated. The material shows promising cycle-life and capacity properties for lithium-ion-battery applications. The application of Fe 3 O 4 as anode material for lithium-ion batteries is hindered by the capacity fade owing to its enormous volume expansion and the inherent low conductivity. Herein, carbon-encapsulated Fe 3 O 4 nanospheres anchored on carbon nanotubes (Fe 3 O 4 /CNTs@C) have been successfully fabricated. The obtained Fe 3 O 4 /CNTs@C composites show that numerous Fe 3 O 4 nanospheres are held and connected by the CNT network, forming a composite of porous three-dimensional structure. The unique structure improves the conductivity and structural stability of the Fe 3 O 4 /CNTs@C composite. The encapsulation with carbon enhances the contact between Fe 3 O 4 nanospheres and carbon nanotubes and shortens the ion-transport path. As a result, the Fe 3 O 4 /CNTs@C delivers a high capacity of 612 mA h g −1 at 1 A g −1 , even after 200 cycles, and shows a superior rate performance of 523 mA h g −1 at 5 A g −1 . This work provides a preparation strategy that could be easily applied to other functional materials for energy storage and/or catalysis.
研究领域:
材料科学
·
能量存储
·
纳米技术
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Shitao Feng,An Zhang,Fengshou Wu,Xiaogang Luo,Juan Zhang
In this study, a novel core-shell structured magnetic metal-organic framework nanospheres (Fe 3 O 4 @PD@BA-Zr-MOF) were fabricated by in-situ growth of boronic acid-decorated porphyrin-based metal-organic frameworks on polydopamine (PD) functionalized Fe 3 O 4 nanospheres for highly efficient enrichment of cis -diol containing nucleosides by magnetic solid phase extraction (MSPE). PD as a molecular linker promotes the nucleation and crystal growth of boronic acid-decorated porphyrin-based metal-organic framework (BA-Zr-MOF), which was synthesized via a dual-ligand strategy by using Zr 4+ as a metal unit as well as meso-tetra (4-carboxylphenyl) porphyrin (TCPP) and 1, 4-phenylenebisboronic acid (BA) as dual organic ligands. It is worth noting that the nitrogen-rich skeleton of TCPP and abundant boric acid groups in MOF allows for effective and selective enrichment of cis -diol containing compounds by hydrophilic interaction and boron affinity. Also, Zr 4+ well assembled into the MOF is beneficial to extraction via metal oxide affinity interaction due to reversible covalent complex formation/dissociation between Zr and cis -diol compounds. The morphology, structure and saturation magnetization of Fe 3 O 4 @PD@BA-Zr-MOF were systematically characterized. The as-prepared adsorbent coupled with high performance liquid chromatography was used for analysis of four nucleosides including cytidine , uridine , guanosine , and adenosine in urine sample with the detection limits in range of 0.002–0.005 μg mL −1 and the quantitative limits in range of 0.008–0.018 μg mL −1 . The as-fabricated Fe 3 O 4 @PD@BA-Zr-MOF nanospheres shows high selectivity , low detection limit, excellent reusability and reproducibility for nucleosides enrichment. The large specific surface area and quick magnetic response performance endow the affinity magnetic nanospheres with outstanding enrichment capability for rapid extraction. The adsorbent of Fe 3 O 4 @PD@BA-Zr-MOF nanospheres has great potential for identification and analysis of trace cis -diol containing nucleosides in biological samples.
研究领域:
分析化学
·
材料科学
·
纳米技术
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）