Humidity sensing properties of single Au-decorated boron nitride nanotubes

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• 作者：Yuanlie Yu^a ; Hua Chen^a ; ^{hua.chen@anu.edu.au} ; Yun Liu^b ; Lu Hua Li^c ; Ying Chen^c
• 关键词：Boron nitride nanotubes ; Au decoration ; Humidity sensing property
• 刊名：Electrochemistry Communications
• 出版年：2013
• 出版时间：May, 2013
• 年：2013
• 卷：30
• 期：Complete
• 页码：29-33
• 全文大小：872 K

文摘

In this communication, the humidity sensing properties of single boron nitride nanotubes (BNNTs) with and without Au decoration have been investigated. The current-voltage measurement shows that the decoration of Au nanoparticles on the surface of BNNTs effectively improves the conductance. The resistance of single BNNT and Au-BNNT decreases slowly at the low relative humidity (RH) from 20 % to 50 % ; but decreases fastly at the high RH from 50 % to 90 % . Moreover, the adsorption and desorption tests indicate that the Au-decorated boron nitride nanotube (Au-BNNT) has a fast and sensitive response and recovery to RH at room temperature. The good humidity-sensing properties of the Au-BNNT combined with its excellent chemical stability, make it a promising candidate for the fast detection of humidity in various wild environments.