Preparation and Characterization of Carbon-encapsulated Cobalt () Oxide Nanoparticles

doi:10.11896/j.issn.1005-023X.2018.04.023

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	Preparation and Characterization of Carbon-encapsulated Cobalt () Oxide Nanoparticles
	Zhu, Xueliang 1,2; Wei, Zhiqiang 1,2; Bai, Junshan 2; Zhao, Wenhua 2; Feng, Wangjun 2; Jiang, Jinlong 2
刊名	Cailiao Daobao/Materials Review
	2018-02-25
卷号	32 期号:2 页码:621-625
关键词	Adsorption isotherms Carbon Cobalt Cobalt compounds Desorption High resolution transmission electron microscopy Morphology Nanoparticles Particle size Particle size analysis Pore size Pore structure Red Shift Shells (structures) Specific surface area Temperature X ray diffraction Average particle size BET specific surface area Carbon-encapsulated Core shell structure Equivalent particle size Face centered cubic structure Particle morphologies X-ray energy dispersive spectrometry
ISSN号	1005023X
DOI	10.11896/j.issn.1005-023X.2018.04.023
英文摘要	Carbon-encapsulated CoO core-shell structure nanoparticles were successfully prepared by DC arc discharge plasma technique. The product was characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and X-ray energy dispersive spectrometry (XEDS). Raman spectroscopy and low-temperature N2 adsorption/desorption were employed to determine the morphology, crystal structure, specific area, and pore structure of the nanoparticles. HRTEM indicated that the carbon-encapsulated CoO nanoparticles prepared by this method possess typical core shell structure. The particle morphology exhibits spherical or ellipsoidal structure with uniform particle size and good dispersion. The particle size distribution is in the range of 20-60 nm, the average particle size is 40 nm, and the thickness of the shell carbon layer is about 5 nm. XRD studies demonstrate that the core of the particles is CoO with face-centered cubic structure CoO, and the outer shell is disordered carbon layer. XEDS spectra confirmed the presence of Co, O and C elements in the sample. Raman spectrum showed the low degree of graphite in the sample and the occurrence of red shift phenomenon. The N2 adsorption and desorption isotherm belongs to type , the BET specific surface area is 33 m2/g, the BJH desorption cumulative pore volume and desorption average pore size are 0.078 cm3/g and 11 nm, respectively. The equivalent particle size is 43 nm, which is consistent with the results measured by TEM and XRD. © 2018, Materials Review Magazine. All right reserved.
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113819]
专题	理学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhu, Xueliang,Wei, Zhiqiang,Bai, Junshan,et al. Preparation and Characterization of Carbon-encapsulated Cobalt () Oxide Nanoparticles[J]. Cailiao Daobao/Materials Review,2018,32(2):621-625.
APA	Zhu, Xueliang,Wei, Zhiqiang,Bai, Junshan,Zhao, Wenhua,Feng, Wangjun,&Jiang, Jinlong.(2018).Preparation and Characterization of Carbon-encapsulated Cobalt () Oxide Nanoparticles.Cailiao Daobao/Materials Review,32(2),621-625.
MLA	Zhu, Xueliang,et al."Preparation and Characterization of Carbon-encapsulated Cobalt () Oxide Nanoparticles".Cailiao Daobao/Materials Review 32.2(2018):621-625.