Naslov
The preparation and optimization of poly(vinyl butyral) based membranes for in-situ formation of solid-state Ag/AgCl reference electrode

Autori
Krivačić, Sara ; Zubak, Marko ; Kassal, Petar

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

Izvornik
28th Croatian Meeting of Chemists and Chemical Engineers, March 28-31, 2023. Rovinj, Croatia. Book of Abstracts / - , 2023, 41-41

Skup
28th Croatian Meeting of Chemists and Chemical Engineers

Mjesto i datum
Rovinj, Hrvatska, 28.03.2023. - 31.03.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
inkjet printing ; reference electrode ; potentiometry

Sažetak
Advanced insights into electroanalytical systems enabled developing sensors for health-care, environment and industrial processes monitoring. Manufacturing miniaturized devices has become a peculiar research topic for lower-cost and easy- to-use analytical solutions. In scope of this, inkjet printing (IJP) has emerged as a powerful production technology ; it is digitally controlled, mask-less and non-contact, fast, low- cost, environmentally viable, and suitable for upscaling. A previously published concept of a reference membrane based on the photoreduction of AgCl in a poly(vinyl butyral) (PVB) methanol solution [1] could be further developed towards manufacturing solid-state reference electrodes (SSRE) by means of IJP. [2] We have developed and optimized two PVB-based reference membrane solutions for in situ production of Ag/AgCl-based SSRE by means of IJP. The two membranes were prepared using tertiary solutions of AgNO3 and CaCl2 in methanol, ethylene glycol and butanol, with the aid of commercially available surfactant Triton X-100. The solutions were sequentially added on top of inkjet printed planar silver and carbon electrodes. Upon mixing the solutions AgCl is formed, which is then partially reduced by intense pulsed light (IPL). We have optimized the weight percentage of PVB, the degree of photoreduction and the conditioning procedure to obtain a stable reference electrode potential. The response to chloride and other ions was evaluated via potentiometry and electrochemical impedance spectroscopy, along with the influence of pH and light. Approaches like this could enable large scale manufacturing of low-cost miniaturized solid-state reference electrodes to find use in emerging chemical sensing scenarios.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA