DocumentCode :
738377
Title :
Electrochemical detection of methanol by platinum/carbon nanotubes nanocomposites synthesised via hydrogen plasma reduction process
Author :
Xu, Jie ; Wang, Shuhui ; Du, Zhendong ; Zhu, Junan ; Liu, Yanbing ; Zhang, Wensheng ; Wang, Jiacheng
Author_Institution :
Provincial Key Laboratory of Plasma Chemistry and Advanced Materials, Wuhan Institute of Technology, Wuhan 430073, People´s Republic of China
Volume :
8
Issue :
12
fYear :
2013
fDate :
12/1/2013 12:00:00 AM
Firstpage :
890
Lastpage :
894
Abstract :
Platinum (Pt)/carbon nanotube (CNTs) nanocomposites were fabricated on the basis of Pt precursors reduced by hydrogen plasma generated by microwave process. The Pt nanoparticles were uniformly dispersed on multi-walled CNTs. Such nanocomposites exhibit remarkable catalytic performance towards the oxidation of methanol. The concentration of methanol was determined by a chronoamperometric method by using the Pt/CNTs modified glass carbon electrode (Pt/CNTs/GCE) at an oxidation potential of 0.7 V against the saturated calomel electrode. The Pt/CNTs/GCE showed a good performance for detecting methanol because of the unique properties of CNTs which increased the active surface area of the electrode and accelerated the electro transfer. The linear detection range of methanol was determined to be from 2.0 × 10–4 to 10.0 M in two slopes with a detection limit 5 × 10–5 M at a signal-to-noise ratio of 3. The performance of the Pt/CNTs/GCE in terms of stability, linear range and detection limit shows its potential application for methanol detection.
fLanguage :
English
Journal_Title :
Micro & Nano Letters, IET
Publisher :
iet
ISSN :
1750-0443
Type :
jour
DOI :
10.1049/mnl.2013.0604
Filename :
6750529
Link To Document :
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