Issue 25, 2018, Issue in Progress

High temperature gas sensing performances of silicon carbide nanosheets with an n–p conductivity transition

Abstract

Fast and effective detecting of flammable and explosive gases in harsh environments (high temperature, corrosion atmosphere) is crucial for preventing severe accidents for the chemical industry, fuel cell applications and engine tests. Silicon carbide material is reported to be a good candidate for gas sensing devices applied in extreme conditions. Herein, high-temperature available silicon carbide nanosheets (SiC NSs) were synthesized from graphene oxide (GO) via a catalyst-free carbothermal method. The structure and composition of SiC NSs under different reaction conditions are carefully characterized. The received SiC NSs were firstly utilized as gas sensing materials for hazardous gases (acetone, ethanol, methanol and ammonia) at a high temperature (500 °C). Importantly, the SiC NSs sensors exhibited a fast response (8–39 s) and recovery (12–69 s) towards detecting gases. Besides, an n–p conductivity transition phenomenon is found and studied. This paper firstly proves that such SiC NSs has the potential to be used in gas sensing fields.

Graphical abstract: High temperature gas sensing performances of silicon carbide nanosheets with an n–p conductivity transition

Supplementary files

Article information

Article type
Paper
Submitted
12 Mar 2018
Accepted
06 Apr 2018
First published
12 Apr 2018
This article is Open Access
Creative Commons BY license

RSC Adv., 2018,8, 13697-13707

High temperature gas sensing performances of silicon carbide nanosheets with an n–p conductivity transition

L. Sun, C. Han, N. Wu, B. Wang and Y. Wang, RSC Adv., 2018, 8, 13697 DOI: 10.1039/C8RA02164C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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