Ferromagnetically filled carbon nano-onions: the key role of sulfur in dimensional, structural and electric control.

Autor: Medranda D; College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China., Borowiec J; College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China., Zhang X; College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China., Wang S; Analytical and Testing Centre, Sichuan University, Chengdu, People's Republic of China., Yan K; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China., Zhang J; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China., He Y; Analytical and Testing Centre, Sichuan University, Chengdu, People's Republic of China., Ivaturi S; College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China., Boi FS; College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China.
Jazyk: angličtina
Zdroj: Royal Society open science [R Soc Open Sci] 2018 Jan 17; Vol. 5 (1), pp. 170981. Date of Electronic Publication: 2018 Jan 17 (Print Publication: 2018).
DOI: 10.1098/rsos.170981
Abstrakt: A key challenge in the fabrication of ferromagnetically filled carbon nano-onions (CNOs) is the control of their thickness, dimensions and electric properties. Up to now literature works have mainly focused on the encapsulation of different types of ferromagnetic materials including α-Fe, Fe 3 C, Co, FeCo, FePd 3 and others within CNOs. However, no report has yet shown a suitable method for controlling both the number of shells, diameter and electric properties of the produced CNOs. Here, we demonstrate an advanced chemical vapour deposition approach in which the use of small quantities of sulfur during the pyrolysis of ferrocene allows for the control of (i) the diameter of the CNOs, (ii) the number of shells and (iii) the electric properties. We demonstrate the morphological, structural, electric and magnetic properties of these new types of CNOs by using SEM, XRD, TEM, HRTEM, EIS and VSM techniques.
Competing Interests: We declare we have no competing interests.
Databáze: MEDLINE
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