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Preparation of carbon encapsulated iron nanoparticles with very thin shells by DC arc discharge

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Abstract

Carbon encapsulated iron nanoparticles (CEINPs) with very thin shells and good core-shell structures were prepared by DC arc discharge at argon intake temperature (AIT) of 800 °C. The results of high resolution transmission electron microscope (HRTEM), energy dispersive X-ray (EDX) spectroscope, X-ray diffraction (XRD), and X-ray photoelectron spectroscope (XPS) characterizations on the product B show that the thickness of the carbon shells of CEINPs in the product B is in the range of ca. 0.5–5.3 nm, i. e., which can be as thin as only two layers of graphite. The average diameter of the CEINPs is about 24.7 nm. The total content of Fe element in the product B is 77.0 wt%. The saturation magnetization (M s) and coercivity (H c) of the product B are 107.4 emu/g and 143 Oe, respectively. The formation of the CEINPs in the product B is discussed briefly.

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Authors and Affiliations

  1. Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China

    Shen Cui  (崔 屾), Lishuang Zhang  (张丽爽), Fan Zhang  (张 帆), Ling Li  (李 玲) & Sayyar Ali Shah

  2. Center of Analysis, Tianjin University, Tianjin, 300072, China

    Lan Cui  (崔 兰) & Kui Lin  (林 奎)

  3. Tianjin Cement Industry Design and Research Institute Co. Ltd., Tianjin, 300400, China

    Fan Zhang  (张 帆)

  4. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China

    Fengmin Jin  (靳凤民)

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  1. Shen Cui  (崔 屾)
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  2. Lishuang Zhang  (张丽爽)
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  3. Lan Cui  (崔 兰)
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  6. Fengmin Jin  (靳凤民)
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Correspondence to Shen Cui  (崔 屾).

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Cui Shen, born in 1958, male, Dr, Prof.

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Cui, S., Zhang, L., Cui, L. et al. Preparation of carbon encapsulated iron nanoparticles with very thin shells by DC arc discharge. Trans. Tianjin Univ. 21, 11–18 (2015). https://doi.org/10.1007/s12209-015-2375-2

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