Synthesis and Characterization of Carbon-Encapsulated Nickel Nanoparticles from De-Oiled Asphalt

Abstract:

Article Preview

Carbon-encapsulated Ni nanoparticles with the size of 5 to 30 nm were synthesized from de-oiled asphalt (DOA) by heat-treatment at 1800 °C with nickel powder. The nanoparticles exhibited well-constructed core-shell structures, with Ni cores and graphitic shells. High resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) examinations confirmed that the carbon-encapsulated Ni nanoparticles were uniformly dispersed in carbon matrix and the Ni nanoparticles were surrounded by several carbon layers with well ordered arrangement. The formation of the core-shell nanoparticles was selectively controlled by adjusting the ratio of de-oiled asphalt to nickel powders. The possible growth model for the carbon-encapsulated Ni nanoparticles was discussed briefly. This result presents a simple and controllable way to synthesize carbon-encapsulated nickel nanoparticles.

Info:

Periodical:

Advanced Materials Research (Volumes 652-654)

Edited by:

Zhengyi Jiang, Xianghua Liu, Sihai Jiao and Jingtao Han

Pages:

202-205

Citation:

J. Yu and B. S. Xu, "Synthesis and Characterization of Carbon-Encapsulated Nickel Nanoparticles from De-Oiled Asphalt", Advanced Materials Research, Vols. 652-654, pp. 202-205, 2013

Online since:

January 2013

Authors:

Export:

Price:

$41.00

[1] Ruoff RS, Lorents DC, Chan B, Malhotra R, Subramoney S. Science 1993; 259: 346-8.

[2] Tomita M, Saito Y, Hayashi T. Jpn J Appl Phys Lett 1993; 32(2B): 280-2.

[3] Xu BS, Guo JJ, Wang XM, Liu XG, Ichinose H. Carbon 2006; 44: 2631-34.

[4] Qiu JS, Li YF, Wang YP, Zhao ZB, Zhou Y, Wang YG. Fuel 2004; 83: 615-7.

[5] Sun XCh, Antonio Toledo J. Curr Appl Phys 2002; 2: 113-6.

[6] Jiao J, Seraphin S, Wang X, Withers JC. J Appl Phys 1996; 80(1): 103-8.

[7] Subramoney S. Adv Mater 1998; 10(15): 1157-71.

[8] Roy D, Manish C, Wang H. Chem Phys Lett 2003; 373: 52-6.

[9] Flahant E, Agnoli F, Sloan J, O'Connor C, Green MLH. Chem Mater 2002; 14: 2553-58.

[10] Eizenberg M, Blakely JM. J Chem Phys 1979; 71(8): 3467-77.

[11] Bokhonov B, Korchagin M. J Alloy Compd 2002; 333: 308-20.