Journal
MATERIALS LETTERS
Volume 142, Issue -, Pages 141-144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.12.009
Keywords
SnO2 nanosheet; Microstructure; Porous feature; Acetic acid; Sensors
Funding
- National Natural Science Foundations of China [10874140]
- College Basic Scientific Research Operation Cost of Gansu Province (the manufacture and characteristic research of the optical gas sensing film and the Y series superconducting materials)
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
- Natural Science Foundational of Gansu Province [1308RJZA258, 1308RJZA216]
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The porous flower-like SnO2 was successfully synthesized by a simple hydrothermal strategy and followed by calcination. The well-defined nanoflower was composed of thin nanosheets, which has many pores on its surface. The sensor based on these porous SnO2 nanoflowers showed excellent selectivity, fast response-recovery capability and high response to acetic acid at 340 degrees C. The response and recovery time were about 11 s and 6 s, respectively. The enhancement in gas sensing properties was attributed to their unique structures, including the 3D hierarchical structure and porous feature. The present study could be applied to the acetic acid detection. (C) 2014 Elsevier B.V. All rights reserved.
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