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Potentiometric surfactant sensor with a pt-doped acid-activated multi-walled carbon nanotube-based ionophore nanocomposite [Elektronski vir]Glumac, Nada ...Two new surfactant sensors were developed by synthesizing Pt-doped acid-activated multiwalled carbon nanotubes (Pt@MWCNTs). Two different ionophores using Pt@MWCNTs, a new plasticizer, and (a) ... cationic surfactant 1,3-dihexadecyl-1H-benzo[d]imidazol-3-ium-DHBI (Pt@MWCNT-DHBI ionophore) and (b) anionic surfactant dodecylbenzenesulfonate-DBS (Pt@MWCNT-DBS ionophore) composites were successfully synthesized and characterized. Both surfactant sensors showed a response to anionic surfactants (dodecylsulfate (SDS) and DBS) and cationic surfactants (cetylpyridinium chloride (CPC) and hexadecyltrimethylammonium bromide (CTAB)). The Pt@MWCNT-DBS sensor showed lower sensitivity than expected with the sub-Nernstian response of ≈23 mV/decade of activity for CPC and CTAB and ≈33 mV/decade of activity for SDS and DBS. The Pt@MWCNTDHBI surfactant sensor had superior response properties, including a Nernstian response to SDS (59.1 mV/decade) and a near-Nernstian response to DBS (57.5 mV/decade), with linear response regions for both anionic surfactants down to ≈2 × 10−6 M. The Pt@MWCNT-DHBI was also useful in critical micellar concentration (CMC) detection. Common anions showed very low interferences with the sensor. The sensor was successfully employed for the potentiometric titration of a technical grade cationic surfactant with good recoveries. The content of cationic surfactants was measured in six samples of complex commercial detergents. The Pt@MWCNT-DHBI surfactant sensor showed good agreement with the ISE surfactant sensor and classical two-phase titration and could be used as an analytical tool in quality controlSource: Sensors [Elektronski vir]. - ISSN 1424-8220 (Vol. 24, iss. 8, [article no.] 2388, 8 April 2024, 14 str.)Type of material - e-article ; adult, seriousPublish date - 2024Language - englishCOBISS.SI-ID - 192015107
Author
Glumac, Nada |
Momčilović, Milan |
Kramberger, Iztok |
Štraus, Darko |
Sakač, Nikola |
Kovač-Andrić, Elvira |
Đurin, Bojan |
Kraševac Sakač, Marija |
Đambić, Kristina |
Jozanović, Marija
Topics
senzorji |
surfaktanti |
karbonski nanodelci |
potentiometric surfactant sensor |
metal-doped MWCNT |
surfactants |
carbon nanocomposite |
sensors
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Database name | Field | Year |
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Glumac, Nada | |
Momčilović, Milan | |
Kramberger, Iztok | 18590 |
Štraus, Darko | 32696 |
Sakač, Nikola | |
Kovač-Andrić, Elvira | |
Đurin, Bojan | |
Kraševac Sakač, Marija | |
Đambić, Kristina | |
Jozanović, Marija |
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