Naslov
Cellulose aerogels – SnO2 composites as potential photocatalysts

Autori
Bafti, Arijeta ; Panžić, Ivana ; Brnardić, Ivan ; Mandić, Vilko

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

Izvornik
1st ACDC 2023 Book of Abstracts / Mandić, Vilko - Zagreb, 2023, 36-36

ISBN
978-953-6470-99-0

Skup
1st Conference of Advanced Ceramics in Derivative Configurations

Mjesto i datum
Dubrovnik, Hrvatska, 26.04.2023. - 29.04.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cellulose ; tin(iv) oxide ; photocatalysis
(cellulose ; tin(iv) oxide ; photocatalysis ; thin-film)

Sažetak
A huge focus worldwide is devoted to the production of novel tailored materials to improve electronic devices through sustainable processes. Nowadays, as reagents for the production of metal oxide–carbon composites that could be used in catalysis, sensing, and electrochemical devices, biopolymers are leading candidates. Various TiO2- based nanostructured materials fabricated using different cellulose templates such as nano and microcellulose fibres have been reported previously in the literature. Cellulose, as the most abundant renewable biopolymer, was used as well in our research to control the morphology, porosity, and therefore the properties of the derived composite samples at the nanoscale. Moreover, the tin(IV) oxide has a similar bandgap as already well-studied TiO2, while has not yet reached as wide applicability. In this work, to broaden the research in the field of SnO2 nanostructures, we investigated the properties of cellulose-immobilised SnO2 samples. Additionally, the influence of post-reaction treatment of the samples was investigated. This work focuses on the course of non-hydrolytic sol-gel freeze-drying synthesis in combination with the reductive mineralization of cellulose. Samples' post-treatment was carried out under both inert and atmospheric conditions, at three chosen temperatures (60 °C, 700 °C, and 800 °C). Thin films of the resulting composite samples were prepared and characterised using grazing incidence X-ray diffraction (GIXRD), which overall showed the degree of chemical homogeneity of studied composites. Morphologic and surface geometries were studied by scanning electron microscopy (SEM). Finally, the photocatalytic activity was investigated by photocatalytic degradation with a model micropollutant with previously calculated bandgap values from diffuse reflectance spectroscopy (DRS) measurements.

Izvorni jezik
Engleski

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

POVEZANOST RADA