Correlation Between Electrical Conductivity and Catalytic Property in 78V(2)O(5)-15P(2)O(5)-7B(2)O(3) Glass Containing Fe2O3

摘要

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 78V(2)O(3)-15P(2)O(5)-7B(2)O(3) ternary-system containing x mol% Fe2O3 (x = 1, 5, 7.5, and 10). Electrical conductivity was measured at 45 degrees C for samples heat-treated at 340 degrees C 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.