Wang G X, Park J S, Park M S
School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, New South Wales 2522, Australia.
J Nanosci Nanotechnol. 2009 Feb;9(2):1144-7. doi: 10.1166/jnn.2009.c106.
Tin dioxide nanotubes (200 nm in diameter) were synthesised by the sol-gel template method. The gas sensitivity of SnO2 nanotubes has been investigated. Due to the small grain size and large amount of grain boundary, SnO2 nanotubes demonstrated good sensitivity in sensing ethanol gas and had an ability to detect ammonia gas without any doping or surface modification. In2O3 semiconductor nanowires were synthesized efficiently by the chemical vapor deposition method through carbon thermal reduction. The diameter, length and morphologies of In2O3 nanowires can be varied by controlling the synthetic conditions. The In2O3 nanowires were characterised by field emission scanning electron microscopy (FE-SEM) and high resolution transmission electron microscopy (HRTEM). The application of In2O3 nanowires for gas sensors was tested.
采用溶胶-凝胶模板法合成了直径为200纳米的二氧化锡纳米管。研究了SnO₂纳米管的气敏性能。由于晶粒尺寸小且晶界数量多，SnO₂纳米管在检测乙醇气体时表现出良好的灵敏度，并且无需任何掺杂或表面改性就能检测氨气。通过碳热还原化学气相沉积法高效合成了In₂O₃半导体纳米线。通过控制合成条件，可以改变In₂O₃纳米线的直径、长度和形貌。采用场发射扫描电子显微镜（FE-SEM）和高分辨率透射电子显微镜（HRTEM）对In₂O₃纳米线进行了表征。测试了In₂O₃纳米线在气体传感器中的应用。
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