Nada Glumac (Avtor), Milan Momčilović (Avtor), Iztok Kramberger (Avtor), Darko Štraus (Avtor), Nikola Sakač (Avtor), Elvira Kovač-Andrić (Avtor), Bojan Đurin (Avtor), Marija Kraševac Sakač (Avtor), Kristina Đambić (Avtor), Marija Jozanović (Avtor)

Povzetek

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 control

Ključne besede

senzorji;surfaktanti;karbonski nanodelci;potentiometric surfactant sensor;metal-doped MWCNT;surfactants;carbon nanocomposite;sensors;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FERI - Fakulteta za elektrotehniko, računalništvo in informatiko
UDK: 681.586
COBISS: 192015107 Povezava se bo odprla v novem oknu
ISSN: 1424-8220
Št. ogledov: 14
Št. prenosov: 0
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: senzorji;surfaktanti;karbonski nanodelci;
Vrsta dela (COBISS): Članek v reviji
Strani: 14 str.
Letnik: ǂVol. ǂ24
Zvezek: ǂiss. ǂ8, [article no.] 2388
Čas izdaje: 8 April 2024
DOI: 10.3390/s24082388
ID: 24798340