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Optimizing Carbon Nanotubes Dispersing Agents from the Point of View of Ion‐selective Membrane Based Sensors Performance – Introducing Carboxymethylcellulose as Dispersing Agent for Carbon Nanotubes Based Solid Contacts
Author(s) -
Jaworska Ewa,
Maksymiuk Krzysztof,
Michalska Agata
Publication year - 2016
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.201500609
Subject(s) - dispersant , carbon nanotube , materials science , membrane , chemical engineering , electrode , pulmonary surfactant , carbon fibers , ion , nanotechnology , dispersion (optics) , composite material , chemistry , organic chemistry , composite number , biochemistry , physics , engineering , optics
The influence of dispersing agent used to prepare carbon nanotubes solid‐contact on the performance of all‐solid state ion‐selective electrodes has been evaluated. It is shown that excess of surfactant dispersing agent is leading to deterioration of sensor performance, however, removal of dispersing agent – a typically applied approach – is resulting in substantial change of transducer layer physical properties, which can influence sensor performance. As remedy we propose application of a polymeric dispersing agent – carboxymethylcellulose. Thus obtained ion‐selective electrodes are characterized by high potential readings stability both within day and between days.