Naslov
MWCNT SURFACTANT SENSOR: INFLUENCE OF THE SENSOR GEOMETRY ON THE RESPONSE CHARACTERISTICS

Autori
Sakač, Nikola ; Jozanović, Marija ; Karnaš, Maja ; Kraševac, Marija ; Harangozo, Dora ; Sak-Bosnar, Milan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International Conference 16th Ružička days “TODAY SCIENCE – TOMORROW INDUSTRY” / - , 2016, 35-35

Skup
International Conference 16th Ružička days “TODAY SCIENCE – TOMORROW INDUSTRY”

Mjesto i datum
Vukovar, Hrvatska, 21.09.2017. - 23.09.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
MWCNT, surfacant, direct potentiometry

Sažetak
A potentiometric surfactant sensor cocktail based on multi-walled carbon nanotubes (MWCNTs) and the 1, 3-didecyl-2-methylimidazolium– tetraphenylborate (DMI-TPB) ion pair as a sensing material has been applied on two graphite based carriers. Sensor cocktails have been applied using two immobilisation techniques: a) a dip coating technique has been applied to the graphite wire (0, 9 mm diameter) carrier (a coated wire type) and ; b) a drop casting technique has been applied to the graphite based (2, 0 mm diameter) planar carrier (a disc type). The influence of the geometry of the sensor on the sensor characteristics was investigated measuring the response of the fabricated sensors on anionic surfactant - sodium dodecyl sulphate (DS). The coated wire graphite sensor showed sub- Nernstian response (about 29 mV/decade of activity) and the disc type graphite sensor showed Nernstian response (about 59 mV/decade of activity). Both sensor types are low cost and simple to fabricate.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA