Naslov
Structural, electrical and photocatalytic properties of iron-containing soda-lime aluminosilicate glass and glass-ceramics

Autori
Ali, Ahmed S. ; Khan, Irfan ; Zhang, Bofan ; Razum, Marta ; Pavić, Luka ; Šantić, Ana ; Bingham, Paul A. ; Nomura, Kiyoshi ; Kubuki, Shiro

Izvornik
Journal of non-crystalline solids (0022-3093) 553 (2021); 120510, 11

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Soda-lime alumino-silicate glass-ceramics ; Iron oxide ; Mössbauer spectroscopy ; Impedance spectroscopy ; Photo-Fenton ; Combustible waste slag

Sažetak
The structure and electrical conductivity of iron-containing soda-lime alumino-silicate glass-ceramic system were investigated and used for the degradation of methylene blue (MB) solution. Mössbauer isomer shifts were decreased from 0.26 and 0.25 to 0.14 and 0.12 mm s−1 with increasing basicity from 0.75 to 1.50 revealing the cleavage in network structure due to the incorporation of Ca2+ ions. By increasing basicity from 0.75 to 1.50, the electrical conductivity was increased from (2.2 × 10−12 to 2.2 × 10−8 Ω−1 cm−1). More increase in basicity to 1.75 decreased the conductivity to 6.5× 10−9 Ω−1 cm−1. The electrical conductivity is ionic in nature and was correlated to the microstructure of the samples. The first-order rate constant (k) for the MB degradation was enhanced from 0.09 × 10−1 to 1.15 × 10−1 min−1 with increasing basicity from 0.75 to 1.50, having a good correlation with microstructure and electrical conductivity.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

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