Electrochemical detection of methanol by platinum/carbon nanotubes nanocomposites synthesised via hydrogen plasma reduction process

被引：3
|
作者：
Xu, Jielin [1 ]
Wang, Shenggao [1 ]
Du, Zurong [1 ]
Zhu, Jinlong [1 ]
Liu, Yi [1 ]
Zhang, Wei [1 ]
Wang, Jianhua [1 ]
机构：
[1] Wuhan Inst Technol, Prov Key Lab Plasma Chem & Adv Mat, Wuhan 430073, Peoples R China
来源：
MICRO & NANO LETTERS | 2013年 / 8卷 / 12期
基金：
中国国家自然科学基金;
关键词：
amperometric sensors; carbon nanotubes; catalysis; electrochemical electrodes; nanocomposites; nanofabrication; nanoparticles; organic compounds; oxidation; plasma materials processing; platinum; reduction (chemical); nanosensors; microwave materials processing; electrochemical detection; platinum-carbon nanotube nanocomposites; microwave hydrogen plasma reduction process; multiwalled CNT; catalytic performance; methanol oxidation; methanol concentration; chronoamperometric method; Pt-CNT modified glass carbon electrode; oxidation potential; saturated calomel electrode; active surface area; electrotransfer; signal-to-noise ratio; voltage; 0; 7; V; Pt-C-C; CARBON NANOTUBES; FUEL-CELLS; SENSOR; NANOPARTICLES; CATALYSTS;
D O I：
10.1049/mnl.2013.0604
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 x 10(-4) to 10.0 M in two slopes with a detection limit 5 x 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.
引用
收藏
页码：890 / 894
页数：5
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