Pregled bibliografske jedinice broj: 1207676
Nanomaterial Additives in Clay-Based Composites for the Non-ionizing Radiation Absorption
Nanomaterial Additives in Clay-Based Composites for the Non-ionizing Radiation Absorption // Book of Abstracts, 4th International Congress of Chemists and Chemical Engineers of B&H / Korać, F. (ur.).
Sarajevo: Faculty of Science, Sarajevo, 2022. str. 62-62 (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 1207676 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Nanomaterial Additives in Clay-Based Composites for
the Non-ionizing Radiation Absorption
Autori
Brdarić, Jelena ; Vrdoljak, Ivan ; Tatar, Dalibor ; Marković, Berislav ; Varevac, Damir ; Miličević, Ivana ; Rupčić, Slavko
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts, 4th International Congress of Chemists and Chemical Engineers of B&H
/ Korać, F. - Sarajevo : Faculty of Science, Sarajevo, 2022, 62-62
Skup
4th International Congress of Chemists and Chemical Engineers of Bosnia and Herzegovina (ICCCEB&H 2022)
Mjesto i datum
Sarajevo, Bosna i Hercegovina, 30.06.2022. - 02.07.2022
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Non-ionizing radiation, clay, electromagnetic radiation, shielding, nanomaterials, EM transmission
Sažetak
While the detrimental effects of ionizing electromagnetic (EM) radiation on human health are well established and thoroughly investigated, the effects of the non-ionizing EM radiation have been debated and studied only recently. In this study, clay composites were subjected to EM transmission testing in the region of non-ionizing radiation between 1.5 and 6.0 GHz which is where the frequency of the most mobile telephony systems can be found. Specimens were made with partial substitution of clay (2.5 and 5 wt.%) with different nanomaterials: fly ash, Titanium dioxides (TiO2 -anatase and rutile), Zinc Ferrite (ZnFe2O4), Maghemite (γ-Fe2O3), Antimony Tin Oxide (ATO), and Multiwalled Carbon Nanotubes (MWCNT). All nanomaterials were characterized by B.E.T. nitrogen adsorption method to determine the specific surface area, and Thermogravimetric methods (TGA/DSC) to designate their thermal properties. Phase analysis was performed by Powder X-ray diffraction (PXRD), and the morphology studied by Electron Microscopy (SEM-EDX). The oxide content was measured by X-ray Fluorescence (ED-XRF) and the quantity of heavy metal determined by Plasma Excitation Spectrometry (ICP- OES). EM radiation transmission was evaluated using Anritsu ms2038 - Spectrum Analyzer. The lowest transmission was reported for the clay specimens with ATO and TiO2 at a frequency of 4 GHz and it is -17 dB. In conclusion, the addition of the certain nanoparticles into clay can significantly lower the penetration of non- ionizing EM radiation through construction elements made from such composite materials.
Izvorni jezik
Engleski
Znanstvena područja
Kemija, Građevinarstvo
POVEZANOST RADA
Projekti:
EK-EFRR-KK.01.1.1.04.0105 - Razvoj i primjena naprednih građevinskih materijala za izgradnju zdravih zgrada: Zaštita od neionizirajućeg zračenja (Z2grade) (Varevac, Damir, EK - KK.01.1.1.04) ( CroRIS)
Ustanove:
Građevinski i arhitektonski fakultet Osijek,
Fakultet elektrotehnike, računarstva i informacijskih tehnologija Osijek,
Sveučilište u Osijeku - Odjel za kemiju
Profili:
Ivan Vrdoljak
(autor)
Jelena Brdarić
(autor)
Ivana Miličević
(autor)
Slavko Rupčić
(autor)
Berislav Marković
(autor)
Dalibor Tatar
(autor)
Damir Varevac
(autor)