JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
·
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
·
肿瘤学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY
·
2023
·
IF 6.7
Jie Yu,Dan Zhu,Cong Qi,Wenjie Zhang
In order to collect solar energy into vapor more efficiently, Ag@Fe 3 O 4 nanoparticles with good photothermal properties were prepared in this study, and nanoparticle films were prepared by vacuum filtration of nanofluids to load nanoparticles on filter membrane, which exhibit good evaporation performance. The effects of fluid depth, nanoparticle loading surface density and light intensity on the evaporation performance were investigated. The experiments showed that the evaporation performance is the best at a light intensity of 2 sun, a surface density of 1.0 g/m 2 and a fluid depth of 30 mm (evaporation efficiency of 0.599 and heat efficiency of 0.824). In addition, the surface density is not conducive to the increase of water temperature when it exceeds a certain range. The increase of nanoparticle film surface density is mainly beneficial to evaporation rather than heat storage.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Hu Zhou,Miao Li,Liqin Chen,Huipeng Cheng,Dan Li,Changxin Tang,Jiren Yuan,Feigao Xu
In this work, Fe 3 O 4 /B 4 C (FeB) composites were successfully prepared by a facile co-precipitation process. FeB composites were characterized using XRD , FTIR, N 2 adsorption-desorption, XPS, etc techniques and then used as heterogeneous Fenton catalysts to activate green oxidant (H 2 O 2 ) for the degradation of TCH. The removal efficiency of TCH by FeB composites was explored including different parameters of Fe 3 O 4 loading on B 4 C, catalyst dosage, initial solution pH, H 2 O 2 dosage, and reaction temperature. The highest photo-Fenton catalytic efficiency was obtained for the composites with a mass ratio of Fe 3 O 4 to B 4 C of 1:0.75. At this time, the removal efficiency of Fe 3 O 4 /B 4 C was 2 times and 391 times that of the parent Fe 3 O 4 and B 4 C, respectively, and B 4 C can effectively improve the efficiency of the Fenton cycle. h + , e - , and ·OH were mainly responsible for the degradation of TCH by Fe 1 B 0.75 composites. After repeated use for five times, the removal efficiency of the catalyst was reduced by only 8.0%. The disparity in work functions by density functional theory calculations confirmed the formation of an internal electric field at the Fe 3 O 4 /B 4 C composites interface, which contributed the transfer of charge carriers between the Fe 3 O 4 and B 4 C. Moreover, the FeB composite showed a high stability, indicating that FeB composites may be a promising heterogeneous catalyst .
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2024
·Vol. 16
·期 29
·13938-13944
·
IF 5.8
Dan Xie,Youyou Deng,Xunlong Ji,Yiyan Zhang,Wentao Zhang,Zijin Hong,Wenjing Liu,Jingjing Du,Zhenli Sun
A novel breakthrough has been achieved in gas detection through the innovative application of surface-enhanced Raman scattering (SERS) to hydrogen (H2) detection for the first time. This study capitalizes on the unique SERS effects of gold nanoparticles coupled with the redox interaction between hydrogen and crystal violet, allowing for the development of a magnetic SERS probe that demonstrated enhanced sensitivity and specificity. This new probe can detect hydrogen concentrations as low as 1% by volume in gaseous environments, offering a substantial improvement over the detection limits of traditional hydrogen alarms. Further, this report comprehensively detailed the synthesis of the FA-CV materials, instrumental analysis, and an in-depth evaluation of the SERS performance of the FA-CV substrate, underlining the outstanding sensitivity, stability, and recyclability of the probe. The introduction of SERS in this novel capacity not only contributes a valuable approach to gas sensing technologies, but also suggests promising avenues for the application of SERS in environmental monitoring and energy security. This illustrates the adaptability and potential impact of this powerful technique.
研究领域:
化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Nailing Gao,Ziyang Lu,Xiaoxu Zhao,Zhi Zhu,Youshan Wang,Dandan Wang,Zhoufa Hua,Chunxiang Li,Pengwei Huo,Minshan Song
In order to realize the rational utilization of waste, C/Fe 3 O 4 was obtained by using biomass as the carbon source and prepared via one-step method, afterwards, a double conductive C/Fe 3 O 4 /Bi 2 O 3 composite photocatalyst was further synthesized via solvothermal method. Due to the good double conductivity, the electrons in Bi 2 O 3 could be transported to C/Fe 3 O 4 , which greatly inhibited the recombination of electron-hole pairs, it is worth noting that the double conductivity effectively blocked the reverse transfer of electrons to Bi 2 O 3 . Consequently, the photodegradation rate of C/Fe 3 O 4 /Bi 2 O 3 composite photocatalyst reached 91%, which was much higher than that of pure Bi 2 O 3 . In addition, the mechanism exploration experiment showed that h + was the main activity specie, meanwhile, the photocatalytic electron transfer mechanism was also investigated.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Ning Li,Yu Tian,Jianhui Zhao,Wei Zhan,Jinying Du,Lingchao Kong,Jun Zhang,Wei Zuo
Efficient and selective capture of phosphate from wastewater is critical to inhibit water eutrophication and supplement phosphate sources. Adsorption, as a simple and environmental-friendly approach, can realize phosphate recovery from wastewater. In order to enhance capture efficiency, adsorption capacity and reusability, magnetic 3D Fe 3 O 4 @ZnO nanocubes with uniform active sites were tailor-designed by hydrothermal-atomic layer deposition method for phosphate removal from water under weak magnetic field (WMF). Ultrafast capture of phosphate (94.8% in 5 min) was achieved by Fe 3 O 4 @ZnO composite under WMF due to the improvement of surface area and electrostatic interaction. More importantly, the synergistic effect of Lorentz force and electrostatic attraction promoted the transfer of phosphate anions to Fe 3 O 4 @ZnO surface and pores in one step, breaking the adsorption limitation induced by intraparticle diffusion. Isotherms fitting indicated that multilayer adsorption occurred on Fe 3 O 4 @ZnO surface with superior adsorption capacity of 100.3 mg/g. Moreover, the Fe 3 O 4 @ZnO exhibited excellent selectivity competing with co-existing matters in wastewater. Mechanism exploration found that inner-sphere complexation by ligand-exchange played a major role in the adsorption process. This easily separable and recyclable adsorbent was demonstrated to be a promising candidate for efficient phosphate capture in real sewage. Also, this study provided a novel approach with WMF application in magnetic separable adsorption system for contaminants remediation.
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
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Haiyang Li,Xuanhe Ru,Ying Song,Huanping Wang,Chenhui Yang,Shuirong Zheng,Lei Gong,Xiaoguang Zhang,Hongji Duan,Zhenguo Liu,Qiuyu Zhang,Yanhui Chen
There is a pressing demand for efficient electromagnetic interference (EMI) shielding materials with strong electromagnetic wave absorption and low reflection for the protection of next-generation communication technologies and wearable electronic devices. In this work, silicone rubber/MXene/Fe3O4 (SRMF) composites with a sandwich-like structure were fabricated using vacuum-assisted dipping and curing. The top and bottom layers of the SRMF composites are magnetic layers containing Fe3O4 particles and silicone rubber (SR), while the middle layer is a 3D conductive network of MXene aerogel film and SR. This sandwich-like structure enables the composites to effectively shield incident electromagnetic waves and improve the absorption of electromagnetic waves through a mechanism of “absorption–reflection–reabsorption”. The electromagnetic shielding performance of a sandwich-structured SR composite containing 1.2 wt % MXene and 20 wt % Fe3O4 reached 55.5 dB, which was higher than that of a blended SRM1.2F20b composite containing the same proportion of MXene and Fe3O4 (23.1 dB), while the power coefficient of reflectivity was 0.65. The SRMF composites also retained their EMI shielding performance after 1000 bending cycles and displayed good tensile strength. These flexible SRMF composites have broad application prospects in the field of electromagnetic protection of wearable devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xi Quan,Jun Zhang,Linlin Yin,Wei Zuo,Yu Tian
In this work, novel Fe 3 O 4 @α-CD nanoparticle was synthesized for the catalytic activation of peroxymonosulfate (PMS) towards carbamazepine (CBZ) degradation. The effect of α-CD content, Fe 3 O 4 @α-CD dosage and PMS concentration on the catalyst activity were systematically evaluated. The results showed the synergistic effect between α-CD and Fe 3 O 4 can greatly improve the removal efficiency of CBZ in the Fe 3 O 4 @α-CD/PMS system. CBZ removal efficiency gained 73.37% in 5 min at pH 7.0 with PMS 1 mM, Fe 3 O 4 @α-CD load 0.4 g/L and CBZ 10 μM. The variation in the removal efficiency of different PPCPs under the same conditions mainly ascribed to the adsorption of α-CD and the activation of PMS by Fe 3 O 4 to generate free radicals, in which sulfate radical (SO 4 ·− ) and hydroxyl radicals ( · OH) was determined as the reactive species in the Fe 3 O 4 @α-CD/PMS system. Density functional theory (DFT) calculations was also utilized to optimize the structure of composite and confirmed that the charge distribution mainly concentrate on Fe 3 O 4 . As deduced from the LC-MS analysis, the possible CBZ degradation pathways were proposed. CBZ degradation efficiency still reached 54% after three cycle, which indicates that Fe 3 O 4 @α-CD catalyst has a good reusability potential and practical applications.
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Teng Zhou,Xiao Zhan,Kunlan Diao,Jiajia Du,Yuhuan Xu,Jingyu Du,Renyuan Yang,Shuhao Qin,Daohai Zhang
With the continuous development of electronic products, polymers with EM shielding have received widespread attention. In this study, Fe 3 O 4 @RGO was prepared by the hydrothermal synthesis method, which solved the problems of Fe 3 O 4 precipitation and RGO stacking. Using it as a precursor, Fe 3 O 4 @RGO/PAM conductive hydrogel was prepared. The research shows that the conductivity of this hydrogel reaches 16.2 S/m at a thickness of 0.3 cm, and the maximum EMI SE is 27.1 dB. Among them, RGO can form a conductive framework, and Fe 3 O 4 can optimize the impedance matching and provide additional magnetic loss. The combined effect of the two makes the hydrogel have excellent EMI SE. In addition, PAM-based hydrogels have good thermal stability, crystallinity, water content, and mechanical properties.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Zhaofei Liu,Xinyue Wang,Yuhang Wei,Weiwei Xie,Song Li,Zhiming Chen
As a biomarker of endocrine gland diseases, the rapid and accurate determination of dopamine has a great significance. The aim of this study was to improve the dopamine biosensing performance of the Fe 3 O 4 @CS-Au-Lac (laccase immobilized on Fe 3 O 4 @CS-Au nanocomposites) by using the photothermal effect of magnetic carriers. Electrochemical impedance spectroscopy measurements revealed that the Fe 3 O 4 @CS-Au nanocomposites enhanced the electron transfer between laccase and the electrode. The Fe 3 O 4 @CS-Au-Lac biosensor presented an ultra-fast response to substrates, accurately detected dopamine within 0.2 s. Dopamine biosensing assays demonstrated that the Fe 3 O 4 @CS-Au-Lac biosensor possessed high sensitivity, remarkable tolerances towards organic compounds and metal ions, and excellent selectivity and stability. Amperometric curves indicated that the illumination brought a higher current to the biosensor compared to the dark environment. The Fe 3 O 4 @CS-Au-Lac biosensor held a low detection limit of 0.79 μM (S/N = 3) and a broad linear range of 1–1000 μM under the irradiation. Most significantly, the Fe 3 O 4 @CS-Au-Lac biosensor provided reliable results in the photothermal analysis of dopamine in synthetic urine samples. This finding paves the way for using the Fe 3 O 4 @CS-Au-Lac biosensor for photothermal detection of dopamine in biomedical applications.
研究领域:
生物医学工程
·
分析化学
·
纳米材料科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 56
·35169-35174
·
IF 3.108
Zhiming Chen,Leilei Liu,Renchun Yang
An effective strategy for enhancement of catalytic activity and stability of immobilized lipase by interfacial activation on Fe3O4@PVBC (Fe3O4@polyvinylbenzyl chloride) nanoparticles was developed, which involved the fabrication of core–shelled Fe3O4@PVBC nanoparticles via an emulsion polymerization process and the subsequent immobilization of lipase in phosphate buffer. Due to the magnetic nature of Fe3O4 cores and the presence of chloromethyl-functionalized polymer shells, the Fe3O4@PVBC nanoparticles were employed as valid magnetic carriers for lipase immobilization. Bradford assays indicated that the loading amount of lipase on the Fe3O4@PVBC nanoparticles was calculated to be 162.5 mg protein per g particles. The catalytic activity of the immobilized lipase retained about 99.6 ± 3.3% of the free enzyme activity, which was attributed to interfacial activation of lipase by Fe3O4@PVBC nanoparticles. Thermal and urea tolerance tests revealed that the immobilized lipase exhibited much better stabilities. Additionally, the immobilized lipase retained more than 69.8% of its initial activities after 10 times of reuse. It is believed that the results of the present investigation may provide a versatile approach for designing and fabricating biocatalysts with high activation and stability.
研究领域:
生物化学
·
纳米生物学
·
酶工程
✓ 已验证
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2018
·
IF 3.849
Jing Wang,Zhan-fang Cao,Fan Yang,Shuai Wang,Hong Zhong
As magnetic catalyst material, great studies have been made to improve the catalytic performance of Fe 3 O 4 nanoparticles by changing the structure, but little attention has been paid to the relationship between the surface properties (the electronegativity, electron transport capacity) and the catalytic performance of Fe 3 O 4 nanoparticles. Therefore, this work was devoted to the investigation of the relationship by loading Fe 3 O 4 nanoparticles on graphene oxide(GO) grafted with N,N,N',N'-Tetrakis (2-hydroxyethy)ethylenediamine (THEED), which was denoted as TG@Fe 3 O 4 . N atoms in THEED and GO have strong electronegativity and electron mobility respectively, which greatly change the surface properties of the Fe 3 O 4 composite. A large number of characterization methods have proved that the original structure of the produced Fe 3 O 4 nanoparticles has not been changed, and the Zeta potential and cyclic voltammetry curves confirmed that the surface properties of Fe 3 O 4 composite have been improved. In the Fenton degradation experiment of MB, TG@Fe 3 O 4 can make the degradation rate of MB reach 100% in 8 min, which verified that the strong electronegativity and electron transport capacity were beneficial to the improvement of the catalytic performance of Fe 3 O 4 composite.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）