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

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. Mossbauer 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 x 10(-12) to 2.2 x 10(-8) Omega(-1) cm(-1)). More increase in basicity to 1.75 decreased the conductivity to 6.5 x 10(-9) Omega(-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 x 10(-1) to 1.15 x 10(-1) min(-1) with increasing basicity from 0.75 to 1.50, having a good correlation with microstructure and electrical conductivity.

Automated summary

The study explored the structure and electrical conductivity of an iron-containing soda-lime alumino-silicate glass-ceramic system, which was used for degrading methylene blue solution. The results showed that increasing basicity led to changes in Mossbauer isomer shifts and electrical conductivity, impacting the degradation rate of methylene blue.