Advances in nano research

  • 제5권2호
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  • Pages.171-178
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  • 2017
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  • 2287-237X(pISSN)
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  • 2287-2388(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Preparation of superparamagnetic ZnFe2O4 submicrospheres via a solvothermal method

  • Ma, Jie (College of science, University of Shanghai for Science and Technology) ;
  • Chen, Bingjie (College of science, University of Shanghai for Science and Technology) ;
  • Chen, Bingkun (College of science, University of Shanghai for Science and Technology) ;
  • Zhang, Shuping (College of science, University of Shanghai for Science and Technology)
  • 투고 : 2016.09.14
  • 심사 : 2017.04.08
  • 발행 : 2017.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

Superparamagnetic Zinc ferrite submicropheres are firstly synthesized via a one-pot solvothermal approach at $200-215^{\circ}C$ for 4-8 hours. $ZnCl_2$, $FeCl_3$ and NaAc are used as precursors with ethylene glycol solvent. The X-ray diffraction (XRD) data indicate that $ZnFe_2O_4$ nanoparticles with the grain size around $15{\pm}3nm$ can be successfully synthesized via the one-pot method. The scanning/transmission electronic microscope (SEM/TEM) images further show the samples are submicrospheres self-assembled by nanoparticles with size about 375-500 nm changed with reaction conditions. Room-temperature vibration magnetic strength measurements (VMS) demonstrates the as-obtained $ZnFe_2O_4$ submicrospheres show prefect superparamagnetism, whose coercivity force and remanence are practically nil. The reaction temperature and time influence on the crystallinity, diameter, saturated magnetic intensity and morphology of the particles.

키워드

과제정보

연구 과제 주관 기관 : national natural science foundation of China

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