Journal
ROYAL SOCIETY OPEN SCIENCE
Volume 5, Issue 2, Pages -Publisher
ROYAL SOC
DOI: 10.1098/rsos.171788
Keywords
ordered mesoporous ZnO; electroplating after chemical plating method; CuO film; In2O3; NOx; gas sensor
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Funding
- National Natural Science Foundation of China [51572034, 21601018]
- National Natural Science Foundation of Changchun University of Science and Technology [XQNJJ-2015-07]
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For the first time, ordered mesoporous ZnO nanoparticles have been synthesized by a template method. The electroplating after chemical plating method was creatively used to form copper film on the surface of the prepared ZnO, and then a CuO film-decorated ordered porous ZnO composite (CuO/ZnO) was obtained by a high-temperature oxidation method. In2O3 was loaded into the prepared CuO film-ZnO by an ultrasonic-assisted method to sensitize the room temperature gas-sensing performance of the prepared CuO/ZnO materials. The doped In2O3 could effectively improve the gas-sensing properties of the prepared materials to nitrogen oxides (NOx) at room temperature. The 1% In2O3 doped CuO/ZnO sample (1 wt% In2O3-CuO/ZnO) showed the best gas-sensing properties whose response to 100 ppm NOx reached 82%, and the detectable minimum concentration reached 1 ppm at room temperature. The prepared materials had a good selectivity, better response, very low detection limit, and high sensitivity to NOx gas at room temperature, which would have a great development space in the gas sensor field and a great research value.
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