Naslov
All-Solid-State Flexible Ammonium-Selective Electrode Based on Inkjet Printed Graphene Solid Contact

Autori
Boček, Željka ; Krivačić, Sara ; Kassal, Petar

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

Izvornik
Solutions in Chemistry 2022, Book of Abstracts / Kassal, Petar ; Meštrović, Ernest ; Namjesnik, Danijel ; Ribić, Rosana ; Šekutor, Marina ; Tomišić, Vladislav ; Usenik, Andrea - Zagreb : Hrvatsko kemijsko društvo, 2022, 99-99

ISBN
978-953-8334-05-4

Skup
International Conference Solutions in Chemistry 2022

Mjesto i datum
Sveti Martin na Muri, Hrvatska, 08.11.2022. - 11.11.2002

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
grafen ; čvrstofazne ion-selektivne elektrode ; inkjet ispis ; potenciometrijski senzori
(graphene ; all-solid-state ion-selective electrodes ; inkjet printing ; potentiometric sensors)

Sažetak
Continuous chemical monitoring presents an imperative for environmental and healthcarerelated analysis, often inaccessible to classical analytical techniques, such as HPLC and UV/Vis spectroscopy. Within the scope of this work, miniaturized planar electrochemical sensor platforms set up in an all- solid-state manner have been developed by inkjet printing. We developed, characterized and optimized the printing process of a planar all-solid-state ammonium ion-selective electrode (NH4-ASS-ISE) (Figure 1). Silver connection pads were made by inkjet printing commercial Ag-ink on flexible polymeric substrates. For the solid contacts, we have previously formulated an inkjet printable water-ethanol-ethylene glycol graphene suspension.1 The number of graphene overprints and the volume of the drop-cast ammoniumselective membrane were optimized with the aid of electrochemical impedance analysis, cyclic voltammetry and potentiometry. NH4- ASS-ISE prepared by 50 graphene ink overprints and dropcast with 120 μL of the ammonium-selective membrane demonstrated the best properties, in terms of sensitivity (64.3 mV/dec in the linear range from 10–4 M to 10–1 M NH4Cl), potential stability, reproducibility of measurements (n = 3), reversibility, and linearity (R2 = 0.9980).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA