Excellent acetone sensing properties of porous ZnO

doi:10.1088/1674-1056/24/1/018503

Abstract Porous ZnO was obtained by hydrothermal method. The results of scanning electron microscope revealed the porous structure in the as-prepared materials. The acetone sensing test results of porous ZnO show that porous ZnO possesses excellent acetone gas sensing properties. The response is 35.5 at the optimum operating temperature of 320 ℃ to 100 ppm acetone. The response and recovery times to 50 ppm acetone are 2 s and 8 s, respectively. The lowest detecting limit to acetone is 0.25 ppm, and the response value is 3.8. Moreover, the sensors also exhibit excellent selectivity and long-time stability to acetone.

Keywords: porous ZnO acetone gas sensor

Received: 18 April 2014
Revised: 07 September 2014
Accepted manuscript online:

PACS:	85.85.+j	(Micro- and nano-electromechanical systems (MEMS/NEMS) and devices)
	85.35.-p	(Nanoelectronic devices)
	81.07.-b	(Nanoscale materials and structures: fabrication and characterization)

Fund: Projected supported by the Project of Challenge Cup for College Students, China (Grant No. 450060497053).

Corresponding Authors: Liu Chang-Bai
E-mail: liwei99@jlu.edu.cn

Cite this article:

Liu Chang-Bai (刘唱白), Liu Xing-Yi (刘星熠), Wang Sheng-Lei (王圣蕾) Excellent acetone sensing properties of porous ZnO 2015 Chin. Phys. B 24 018503

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