Synthesis and magnetic properties of γ-Fe2O3/SiO2 core-shell nanoparticles under hydrothermal conditions

被引：14
|
作者：
Zhang, Enlei [1 ]
Tang, Yuanhong [1 ]
Peng, Kun [1 ]
Guo, Chi [1 ]
Zhang, Yong [1 ]
机构：
[1] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2008年 / 148卷 / 11-12期
关键词：
A. Iron oxide; A; Nanoparticle; B; Hydrothermal; D. Magnetic property;
D O I：
10.1016/j.ssc.2008.10.006
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
gamma-Fe2O3/SiO2 core-shell nanoparticles with an average diameter by about 30 nm were synthesized by hydrothermal reaction of Tetraethoxysilane and Fe(NO3)(3)(center dot)9H(2)O as precursors. The phase component, structure and magnetic properties of the nanoparticles were characterized by X-ray diffraction, transmission electron microscopy and magnetic measurements. The results show that the uniform gamma-Fe2O3 nanoparticles were capped with an amorphous SiO2 thin shell by about 5 nm in the thickness. The effect of hydrothermal temperature and growth mechanism were discussed towards the end of this paper. The magnetic property of nanoparticles was also discussed. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：496 / 500
页数：5
相关论文
共 50 条
  • [1] SYNTHESIS AND STUDY OF CORE-SHELL γ-Fe2O3/SiO2 NANOCOMPOSITE PARTICLES
    Cheng, Lei
    Jing, Yi
    PROCEEDING OF THE 4TH INTERNATIONAL CONFERENCE ON PULPING, PAPERMAKING AND BIOTECHNOLOGY (ICPPB '12), VOLS. I AND II, 2012, : 629 - 634
  • [2] Magnetic properties of γ-Fe2O3 nanoparticles in a porous SiO2 shell for drug delivery
    Kamali, S.
    Yu, E.
    Bates, B.
    McBride, J. R.
    Johnson, C. E.
    Taufour, V
    Stroeve, P.
    JOURNAL OF PHYSICS-CONDENSED MATTER, 2021, 33 (06)
  • [3] Synthesis of magnetic COPt/SiO2 core-shell nanoparticles
    Seto, Takafumi
    Koga, Kenji
    Takano, Fumiyoshi
    Akinaga, Hiroyuki
    Orii, Takaaki
    Hirasawa, Makoto
    Murayama, Mitsuhiro
    COLA'05: 8TH INTERNATIONAL CONFERENCE ON LASER ABLATION, 2007, 59 : 255 - +
  • [4] Surface Effects Under Visible Irradiation and Heat Treatment on the Phase Stability of γ-Fe2O3 Nanoparticles and γ-Fe2O3 -SiO2 Core-Shell Nanostructures
    Stagi, Luigi
    De Toro, Jose A.
    Ardu, Andrea
    Cannas, Carla
    Casu, Alberto
    Lee, Su Seong
    Ricci, Pier Carlo
    JOURNAL OF PHYSICAL CHEMISTRY C, 2014, 118 (05): : 2857 - 2866
  • [5] Synthesis and magnetic properties of Fe3O4@γ-Fe2O3 core/shell nanoparticles
    Dave, Pragnesh N.
    Kalaniya, Riyaz Y.
    JOURNAL OF THE INDIAN CHEMICAL SOCIETY, 2012, 89 (06) : 853 - 856
  • [6] Preparation and properties of magnetic alumina microspheres with a γ-Fe2O3/SiO2 core and Al2O3 shell
    Qingtao Fu 1
    2. Key Laboratory of Catalysis
    3. College of Physics Science and Technology
    Journal of Natural Gas Chemistry, 2011, (01) : 72 - 76
  • [7] Preparation and properties of magnetic alumina microspheres with a γ-Fe2O3/SiO2 core and Al2O3 shell
    Fu, Qingtao
    He, Tingting
    Yu, Lianqing
    Chai, Yongming
    Liu, Chenguang
    JOURNAL OF NATURAL GAS CHEMISTRY, 2011, 20 (01): : 72 - 76
  • [8] Controlled synthesis of monodisperse core-shell γ-Fe2O3@SiO2 nanoparticles with well-dispersed γ-Fe2O3 seeds
    Li, Keran
    Yan, Jiahe
    Luo, Lang
    He, Zhiheng
    Zhou, Lingling
    Gao, Feng
    MICRO & NANO LETTERS, 2020, 15 (04) : 255 - 257
  • [9] Improved Solvothermal Synthesis of γ-Fe2O3 Magnetic Nanoparticles for SiO2 Coating
    Mahajan, Rashmi
    Suriyanarayanan, Subramanian
    Nicholls, Ian A.
    NANOMATERIALS, 2021, 11 (08)
  • [10] Synthesis and characterization of functionalized core-shell γFe2O3-SiO2 nanoparticles
    Maurice, Vincent
    Georgelin, Thomas
    Siaugue, Jean-Michel
    Cabuil, Valerie
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2009, 321 (10) : 1408 - 1413
12345