| Title |
Correlation Between Electrical Conductivity and Catalytic Property in 78V2O 5 -15P2O 5 -7B 2O 3 Glass Containing Fe2O3 |
| Authors |
정화진(Hwa-jin Jeong); 김종환(Jong-hwan Kim); 류봉기(Bong-ki Ryu) |
| DOI |
https://doi.org/10.3365/KJMM.2016.54.12.931 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
crystallization; electrical conductivity; catalytic property; polaron |
| Abstract |
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. †(Received May 10, 2016; Accepted June 7, 2016) |