Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 844, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.155788
Keywords
Zn2SnO4/SnO2; Mesoporous hollow structure; Acetone; Sensor; Heterojunction
Categories
Funding
- National Natural Science Foundation of China [31360459]
- Natural Science Foundation of Guangxi Province, China [2017GXNSFAA198254]
- Science and Technology Major Project of Guangxi [AA17202020, AA17204100, AA18242007]
Ask authors/readers for more resources
Metal oxide Semiconductors with porous hollow heterostructures can provide significant advantages for gas sensing by facilitating the increase of free electron density and the diffusion of target gases. Herein, mesoporous hollow Zn2SnO4/SnO2 microboxes were successfully synthesized by using a facile ZnSn(OH)(6)-sacrificial template method. In synergy with the special mesoporous hollow structure and the n-n heterojunction formed between Zn2SnO4 and SnO2, the Zn2SnO4/SnO2 composites exhibited excellent acetone-sensing properties. Compared with the pure SnO2 sensor, the Zn2SnO4/SnO2 sensor not only displayed a 2 times higher response (20.1) toward 100 ppm acetone as well as excellent selectivity and stability at the optimal operating temperature of 250 degrees C, but still maintained a perceived response (2.4) even when the concentration of acetone was down to 1 ppm. In addition, the enhanced sensing mechanism of Zn2SnO4/SnO2 microboxes was also discussed in detail. This work indicates that the mesoporous hollow Zn2SnO4/SnO2 microboxes can be very promising sensing material for the application of acetone gas sensors. (c) 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available