B4.4 - Mesoporous Al-doped SnO2 nanotubes with enhanced gas-sensing properties fabricated by electrospinning
- Event
- AMA Conferences 2013
2013-05-14 - 2013-05-16
Nürnberg - Band
- Proceedings SENSOR 2013
- Chapter
- B4 - Sensor Materials
- Author(s)
- J. Wu, S. Zhang, D. Zeng - Huazhong University of Science and Technology (HUST), Wuhan (China)
- Pages
- 257 - 262
- DOI
- 10.5162/sensor2013/B4.4
- ISBN
- 978-3-9813484-3-9
- Price
- free
Abstract
Fabrication of metal-oxide nanotubes with quasi-one dimensional (Q1D) nanostructure is complex and expensive. In this work, mesoporous Al-doped SnO2 nanotubes were fabricated by a facile route of simple electrospinning. SEM and HRTEM characterizations of these nanotubes exhibited distinctive mesoporous hollow Q1D structure with 150 nm inner diameter and 250 nm outer diameter. The gas-sensing properties of the nanotubes with varying Al/Sn ratio were tested under variable temperature and formaldehyde (HCHO) concentration. At first, the gas-sensing response increased with the rise of Al amount and reached the maximum response value with the Al/(Al+Sn) ratio of 8:100. Then the response decreased with further increasing Al ratio in SnO2 nanotubes. The results indicated the novel application of electrospinning fabricated metal-oxide semiconductor nanotubes in gas-sensing field, and point towards a promising approach for improving gas response of electrospun materials.