Excellent acetone sensing properties of porous ZnO |
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Authors: | Liu Chang-Bai;Liu Xing-Yi;Wang Sheng-Lei |
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Institution: | College of Electronic Science & Engineering, Jilin University, Changchun 130012, China |
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Abstract: | Porous Zn O 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 Zn O show that porous Zn O possesses excellent acetone gas sensing properties.The response is 35.5 at the optimum operating temperature of 320?C 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. |
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Keywords: | porous ZnO acetone gas sensor |
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