Room Temperature Ionic Liquids (RTILs) and Multiwalled Carbon Nanotubes (MWCNTs) as Modifiers for Improvement of Carbon Paste Ion Selective Electrode Response; A Comparison Study with PVC Membrane |
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| Authors: | Mohammad Reza Ganjali Hamid Khoshsafar Farnoush Faridbod Ali Shirzadmehr Mehran Javanbakht Parviz Norouzi |
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| Affiliation: | 1. Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran;2. Endocrinology & Metabolism Research Center, Medical Sciences/University of Tehran, Tehran, Iran;3. Faculty of Chemistry, Tarbiat Moallem University, Tehran, Iran;4. Department of Chemistry, Amirkabir University of Technology, Tehran, Iran |
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| Abstract: | Room temperature ionic liquids (RTILs), 1‐n‐butyl‐3‐methylimidazolium tetrafluoroborate, [bmim]BF4, and multiwalled carbon nanotubes (MWCNTs) were used for improvement of a praseodymium carbon paste ion selective sensor response. [bmim]BF4 can be a better binder than mineral oils. MWCNTs have a good conductivity which helps the transduction of the signal in carbon paste electrode. The characteristics of these electrodes as potentiometric sensors were evaluated and compared with PVC membrane sensor. The results indicate that potentiometric sensor constructed with ionic liquid shows an increase in performance in terms of Nernstian slope, selectivity, response time, and response stability compared to Pr(III) PVC membrane sensor. |
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| Keywords: | Multiwalled carbon nanotubes Room temperature ionic liquids Sensors Praseodymium Carbon paste ion selective electrodes Nanotubes |
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