Naslov
Monitoring the electrical properties of Zeolite A obtained by mechanochemical synthesis in thin-film configuration

Autori
Bafti, Arijeta ; Rukavina, Marko ; Panžić, Ivana ; Mandić, Vilko

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

Izvornik
Book of Abstracts - 15th International Symposium on Systems with Fast Ionic Transport / Šantić, Anita ; Štefanić, Zoran - Zagreb : Hrvatska udruga kristalografa, 2023, 72-72

Skup
15th International Symposium on Systems with Fast Ionic Transport - ISSFIT15

Mjesto i datum
Dubrovnik, Hrvatska, 18.04.2023. - 22.04.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
mechanochemistry, kaolin, zeolite A, electrical properties

Sažetak
Metakaolin is one of the most researched aluminosilicate minerals due to its simple structure and high (pozzolanic) reactivity. It is often used as a pure precursor in the synthesis of metastable zeolites (geopolymers) and zeolites themselves. However, metakaolin is a dehydroxylated form of kaolin clay and therefore needs high-temperature processing (usually between 600 and 800 °C). Mechanochemical synthesis represents a green approach in modern chemistry due to the reduced consumption of solvents, energy, and faster kinetics. By applying a mechanochemical approach in the synthesis of zeolites, hydrothermal conditions can be avoided, which is eco-friendlier. During the mechanochemical synthesis of zeolite from kaolin, the structure is disturbed through the dehydroxylation (amorphisation) of kaolin due to mechanical grinding, and at the same time, the reaction of alkaline ions and (meta)kaolin occurs, which results in the formation of zeolite and zeolite-like structures. Zeolites as 3D aluminosilicate structures, due to the defined sizes of the entrances of pores and channels, behave like molecular sieves that have very pronounced ion-exchange and adsorption properties. The ability to diffuse cations into the nanopores of the zeolite structure gives the possibility of high ionic conductivity, which opens up the possibility of using zeolites and zeolite-like structures in photovoltaic devices. In this work, the possibility of mechanochemical synthesis of zeolite was investigated, as well as the possibility of performance and applicability of thin-layer configurations of zeolite film in photovoltaic devices. The zeolite synthesis parameters were set to a molar ratio of 1 mol Na2O: 1 mol Al2O3: 2 SiO2, which correspond to zeolite A (LTA). Tape casting was used for the production of thin films, while the amount of water and the curing temperature of the samples was varied. The obtained thin film samples were characterized by XRD, ss-IS, and SEM analysis.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Interdisciplinarne prirodne znanosti, Kemijsko inženjerstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

POVEZANOST RADA