Jump to main content
Jump to site search

Issue 3, 2014
Previous Article Next Article

Calcination-influenced interfacial structures and gas-sensing properties of multi-walled carbon nanotube–tin oxide p–n heterojunctions

Author affiliations

Abstract

Multi-walled carbon nanotube–tin oxide (MWCNT–SnO2) p–n heterojunctions were synthesized using the SnCl2 solution method. The influence of the calcination on the interfacial structure was investigated using scanning and transmission electron microscopy, Raman spectroscopy, X-ray diffraction, thermal analysis, and N2 adsorption–desorption isotherms. The interfacial structure influenced gas-sensing properties were revealed. The heterojunctions calcined at 550 °C under an Ar atmosphere show the strongest interactions between the MWCNTs and SnO2. The strong interactions favored electron transfer, and also resulted in improved gas-sensing properties. After calcination at 650 °C, the increased pore diameter and pore volume, and the improved crystallinity play key roles in the improvement of gas-sensing properties.

Graphical abstract: Calcination-influenced interfacial structures and gas-sensing properties of multi-walled carbon nanotube–tin oxide p–n heterojunctions

Back to tab navigation

Publication details

The article was received on 16 Oct 2013, accepted on 03 Jan 2014 and first published on 06 Jan 2014


Article type: Paper
DOI: 10.1039/C3NJ01280H
New J. Chem., 2014,38, 1100-1105

  •   Request permissions

    Calcination-influenced interfacial structures and gas-sensing properties of multi-walled carbon nanotube–tin oxide p–n heterojunctions

    Y. Jia, P. Wu, Y. Jiang, Q. Zhang, S. Zhou, F. Fang and D. Peng, New J. Chem., 2014, 38, 1100
    DOI: 10.1039/C3NJ01280H

Search articles by author

Spotlight

Advertisements