Correlation Between Electrical Conductivity and Catalytic Property in 78V₂O₅–15P₂O₅–7B₂O₃ Glass Containing Fe₂O₃

In this study, we established a correlation between the electrical conductivity and catalytic properties of vanadium borophosphate glass containing Fe₂O₃. Glasses were synthesized in the 78V₂O₅–15P₂O₅–7B₂O₃ ternary-system containing x mol% Fe₂O₃ (x = 1, 5, 7.5, and 10). Electrical conductivity was measured at 45 ℃ for samples heat-treated at 340 ℃ for 12 h. To examine catalytic effects, we used TGA measurements of a mixture of fatty acid and sample powders. Fourier transform infrared spectroscopy (FTIR) was used to analyze the structural changes after crystallization, while X-ray photoelectron spectroscopy (XPS) analysis indicated changes with different valence state ions. X-ray diffraction (XRD) analysis of the structure array verified these inferred changes. Conductivity and catalytic effects are discussed in relation to the migration of vanadate ions and iron ions with different valence states due to the increase crystallinity.