Article
Materials Science, Ceramics
C. E. Rivera-Enriquez, M. Ojeda-Martinez, M. E. Cano, V. M. Renteria-Tapia, F. Gonzalez, H. J. Ojeda Galvan, C. Velasquez-Ordonez
Summary: Fe3O4/α-Fe2O3/Y2O3:Eu3+ multifunctional nanocomposites were synthesized using a hydrothermal method. The nanocomposites possess a core-shell structure and exhibit interesting optical, structural, and magnetic properties, which make them potential candidates for theranostic materials research in the biomedical field.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Juan Ding, Ligang Cheng
Summary: The Fe3O4@SiO2@PANI ternary nanocomposite, prepared through a three-step method, demonstrates excellent microwave absorption properties with high RLmax and absorption bandwidth, making it a promising material for microwave absorbers in the field of electromagnetic waves.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yuanzhao Hou, Binchuan Li, Jianshe Chen, Xiaoyi Shen, Bo Wang, Kuiren Liu, Shicheng Wei, Xiaocai He, Da Li, Qing Han
Summary: Core double-shell hierarchical structured alpha-Fe(Si)@Fe3O4@SiO2 (FFS) microwave absorbing composites were fabricated using high-temperature mechano-chemical method. Heterogeneous interfaces and high-density defects were formed by coupling temperature field and mechanical force. The FFS composites showed excellent electromagnetic wave absorption performance in the 2-18 GHz frequency range.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Ben Bai, Yuping Zhu, Junfeng Miao, Xue Wang, Shuguang Bi, Lijuan Kong, Wanshuang Liu, Liying Zhang
Summary: Geopolymer nanocomposites prepared with SiO2@Fe3O4 showed improved EMW absorbing performance, with wider absorption bandwidth and lower reflection loss, attributed to the synergistic effect of dielectric loss and magnetic loss.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Jun Liao, Junfeng Qiu, Guohui Wang, Rongxiao Du, Natalia Tsidaeva, Wei Wang
Summary: In this study, a 3D ternary core-shell Fe3O4@SiO2@MoS2 composite was synthesized, showing remarkable enhancement in microwave absorption due to the synergistic effect of magnetic Fe3O4, dielectric SiO2, and MoS2. The specific structural design and interfacial construction play a key role in improving the performance of the composites in absorbing microwaves.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Chun-Rong Lin, Oxana S. Ivanova, Dmitry A. Petrov, Alexey E. Sokolov, Ying-Zhen Chen, Marina A. Gerasimova, Sergey M. Zharkov, Yaw-Teng Tseng, Nicolay P. Shestakov, Irina S. Edelman
Summary: Fe3O4@SiO2 core-shell nanoparticles were synthesized and functionalized for studying their magnetic, structural, and adsorption properties. The magnetic core of the nanoparticles showed nanocrystalline structure with an amorphous silica shell, and the nanoparticles exhibited high saturation magnetization. The adsorption studies on three dyes showed that the nanoparticles followed pseudo-second order kinetics and had maximum adsorption capacity for Congo red according to the Langmuir isotherm.
Article
Physics, Condensed Matter
Aibing Wu, Jianhui Shi, Jianyuan Yu
Summary: Fe-Co/FeYO3/Y2O3:Eu3+ and Fe-Ni/FeYO3/Y2O3:Eu3+ nanocomposites were successfully synthesized by the solid-state method. The main phase in the nanocomposites was found to be Y2O3, and there was a trade-off relationship between the relative amounts of FeYO3 and Fe-Co (or Fe-Ni) alloy in the nanocomposites.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Samin Habibi, Steven Bryant, Roman Shor, Giovanniantonio Natale
Summary: The study focuses on creating monodisperse magnetic particles by depositing a magnetite layer on the surface of silica particles using a low-temperature electroless deposition technique. This technique, scalable and suitable for mass production, can be applied to a wide range of inorganic materials or polymer particles. The resulting SiO2@Fe3O4 core/shell particle is responsive to magnetic fields and shows promise for applications in magnetorheological fluids.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Mahsa Khoshnam, Hamidreza Salimijazi
Summary: In this study, a novel magnetic-photocatalytic core/double-layer-shell of Fe3O4/SiO2/a-Fe2O3 particles was synthesized via a developed sol-gel method, with each stage characterized using XRD, FTIR, and VSM. The particles exhibited an average size of 250 nm and showed high photo-degradation efficiency towards dye contaminations in a short period of time.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yusmaniar, Erdawati, Harini Sosiati, Setia Budi, Mudrik Alaydrus, Erfan Handoko
Summary: In this study, Fe3O4@SiO2 core-shell/polyaniline composites were successfully prepared and investigated for their microwave absorption properties. The addition of Fe3O4@SiO2 core-shell as a filler enhanced the material's ability to absorb microwaves, making it a potential candidate for X-band electromagnetic absorbing material.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Chemistry, Physical
Panpan Pan, Tong Zhang, Bingjie Yu, Rongliang Ma, Qin Yue, Abdulaziz A. Alghamdi, Yonghui Deng
Summary: This study successfully synthesized bifunctional core-shell magnetic fluorescent microspheres, whose surface morphology and roughness can be tuned by controlling the deposition and calcination process, showing outstanding performance in fingerprint recognition.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Liu Danyang, Dai Yimin, Wang Shengyun, Lu Qi, Chen Ling, Wang Zhiheng, Fang Chengqian, Huang Pengmian
Summary: A novel nanocomposite Fe3O4@SiO2-DTPA-DTC was synthesized using a chemical co-precipitation method for the efficient adsorption of Co(2+) from aqueous solution. The composite showed a high removal efficiency of up to 98%, with equilibrium reached within 5 minutes and optimal pH at 6.0. The adsorption process followed the Freundlich isotherm model with a chemical adsorption mechanism, and the nanocomposites maintained high removal efficiency even after five cycles of adsorption tests.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
A. I. Karacolak, F. M. Emen, D. Kilic, E. Kutlu, M. A. Ali, N. Korozlu, R. E. Demirdogen
Summary: This study demonstrates the successful preparation of spherical mesoporous MCM-41 coated with a novel Ca2MoO5:Eu3+ phosphor layer. The loaded Bortezomib was released from the nanoparticles in a sustained manner over 66 hours, following the Korsmeyer-Peppas model. Characterization techniques such as XRD, FT-IR, SEM, TG, and BET were used to analyze the Ca2MoO5:Eu3+-MCM-41 nanoparticles and their drug loading and release behavior.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Xin Ge, Hui Zhang, Meng Ge, Xuemin Liu, Shuang Yuan
Summary: In this study, heterogeneous copper nanoparticle catalysts supported on magnetic nitrogen-doped carbon-silica materials with a core-shell structure were successfully fabricated. These catalysts exhibited excellent catalytic activity for aqueous C-N coupling reactions and showed good universality toward various aryl halides and nitrogen nucleophiles. Moreover, the catalysts were easily recoverable and showed stable performance over multiple reaction cycles.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jin Soon Han, Gye Seok An
Summary: The rapid purification of biomaterials like DNA, RNA, and antibodies has garnered significant attention, especially with the COVID-19 pandemic. Research on core-shell-structured superparamagnetic nanoparticles, specifically Fe3O4@SiO2 nanoparticles for separating nucleic acids, is ongoing. This study proposed a method to fabricate dual-layered Fe3O4@SiO2 nanoparticles with controlled SiO2 shell density and conducted structural, morphological, and magnetic analyses, revealing promising results for their application in biopurification. With the optimal conditions suggested based on the selective separation of plasmid DNA, this research contributes to the advancement of biomaterial purification techniques.
