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Ionic Liquids Modify the Performance of Carbon Based Potentiometric Sensors
Author(s) -
Safavi Afsaneh,
Maleki Norouz,
Honarasa Fatemeh,
Tajabadi Fariba,
Sedaghatpour Fatemeh
Publication year - 2007
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200603767
Subject(s) - hexafluorophosphate , ionic liquid , potentiometric titration , potentiometric sensor , electrode , carbon fibers , selectivity , ionic bonding , inorganic chemistry , chemistry , materials science , chemical engineering , analytical chemistry (journal) , composite number , chromatography , organic chemistry , ion , composite material , catalysis , engineering
A new type of potentiometric sensor based on a recently constructed carbon ionic liquid electrode (CILE) is described. Two kinds of ionic liquids, i.e., N ‐octylpyridinium hexafluorophosphate (OPFP) and 1‐butyl‐3‐methylimidazoluim hexafluorophosphate (BMFP) were tested as binder for construction of the carbon composite electrode. The characteristics of these electrodes as potentiometric sensors were evaluated and compared with those of the traditional carbon paste electrode (CPE). The results indicate that potentiometric sensors constructed with ionic liquid show an increase in performance in terms of Nernstian slope, selectivity, response time, and response stability compared to CPE.