A Nano-composite Carbon Paste Lanthanum(III) Sensor

被引：0
|
作者：
Ganjali, Mohammad Reza [1 ]
Moghaddam, Mohammad Reza [2 ]
Hosseini, Morteza [3 ]
Norouzi, Parviz [1 ]
机构：
[1] Univ Tehran, Ctr Excellence Electrochem, Fac Chem, Tehran, Iran
[2] Minist Petr, Tehran, Iran
[3] Univ Tehran, Fac New Sci & Technol, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2011年 / 6卷 / 06期
关键词：
Sensor; ion selective electrode; potentiometry; carbon paste; multi-walled carbon nanotubes; ionic liquid; POTENTIOMETRIC MEMBRANE SENSOR; IONIC LIQUIDS RTILS; SELECTIVE ELECTRODE RESPONSE; MOUTH WASH PREPARATION; RARE-EARTH-ELEMENTS; PVC-MEMBRANE; NANOTUBES MWCNTS; LANTHANIDE RECOGNITION; NEUTRAL IONOPHORE; SCHIFFS BASE;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Based on our previous studies which indicated a strong interaction between 8-amino-N-(2-hydroxybenzylidene) naphthyl amine (ANA) with La(III) ions, ANA was used as a sensing material in a nano-composite based carbon paste electrode. The electrodes were made based on a nano-composite including multi-walled carbon nanotube (MWCNT), graphite, and room temperature ionic liquid (RTIL), 1-n-butyl-3-methylimidazolium tetrafluoroborate [bmim]BF(4). The best results were obtained for the nano-composite sensor with electrode composition of 5% MWCNT, 10% ANA, 15% RTIL, and 70% graphite powder. The proposed sensor shows a Nernstian response (19.8 +/- 0.3 mV decade(-1)) in the range of 1.0x10(-6)-1.0x10(-2) M with detection limit of 8.0x10(-7) M. The response of the sensor is independent of pH in the range of 4.0-9.0. The nano-composite based La(III) sensor displayed good selectivity, response time, and lifetime.
引用
收藏
页码：1981 / 1990
页数：10
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