Issue 26, 2016

A facile chemical method for the synthesis of 3C–SiC nanoflakes

Abstract

A facile chemical method for the synthesis of 3C–SiC nanoflakes is presented. The process involves the pyrolysis of polycarbosilane (PCS) at 700 °C, in a NaCl powder template, followed by thermal treatment at 1200 °C. The salt is easily removed by washing with water. The morphology of the SiC particles is found to be dependent on the NaCl/PCS weight ratio and by carefully tuning this ratio, different SiC structures can be obtained. While at NaCl/PCS ratios < 40 : 1 micrometer-sized particles with a foamy like structure result, a NaCl/PCS ratio of 40 : 1 is crucial for the formation of 3C–SiC nanoflakes. These nanoflakes are less than 5 nanometers thick, have a high specific surface area of 169 m2 g−1 and a high total pore volume of up to 0.75 cm3 g−1. This method could open a simple, versatile and robust way for the production of SiC nanostructures. Such a facile synthetic method could bring nanostructured SiC one step closer to the ultimate goal of practical applications.

Graphical abstract: A facile chemical method for the synthesis of 3C–SiC nanoflakes

Article information

Article type
Paper
Submitted
11 Jan 2016
Accepted
10 Feb 2016
First published
12 Feb 2016
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2016,6, 21795-21801

A facile chemical method for the synthesis of 3C–SiC nanoflakes

M. Dragomir, M. Valant, M. Fanetti and Y. Mozharivskyj, RSC Adv., 2016, 6, 21795 DOI: 10.1039/C6RA00789A

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