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Journal of Nanomaterials
Volume 2016, Article ID 2381823, 5 pages
http://dx.doi.org/10.1155/2016/2381823
Research Article

Synthesis of Hollow ZnSnO3 Nanospheres with High Ethanol Sensing Properties

College of Science, Civil Aviation University of China, Tianjin 300300, China

Received 19 May 2016; Revised 5 September 2016; Accepted 25 September 2016

Academic Editor: Nguyen V. Hieu

Copyright © 2016 Qiong Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Hollow ZnSnO3 nanospheres were synthesized by a hydrothermal method using ZnO nanospheres as the hard template and raw material simultaneously. The combined characterizations of X-ray diffraction (XRD), scanning electron microscope (SEM) and high-resolution transmission electron microscopy (HRTEM) confirmed the successful preparation of hollow ZnSnO3 nanospheres. The gas-sensing results indicated that the sensor made from hollow ZnSnO3 nanospheres exhibited high sensitivity, good selectivity, and stability to ethanol at a low operating temperature of 200°C. The sensitivity was about 32 and the response and recovery time were about 4 s and 30 s for 100 ppm ethanol, respectively. The enhancement in gas-sensing properties was attributed to the hollow nanostructures and high specific surface areas of ZnSnO3.