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Korean Journal of Metals and Materials > Volume 54(12); 2016 > Article
Korean Journal of Metals and Materials 2016;54(12): 931-936. doi: https://doi.org/10.3365/KJMM.2016.54.12.931
Fe2O3를 포함한 78V2O5-15P2O5-7B2O3계 유리의 결정화에 따른 전기전도도와 촉매특성의 상관관계
정화진, 김종환, 류봉기
부산대학교 재료공학과
Correlation Between Electrical Conductivity and Catalytic Property in 78V2O5-15P2O5-7B2O3 Glass Containing Fe2O3
Hwa-Jin Jeong, Jong-hwan Kim, Bong-Ki Ryu
Pusan National University, Department of Materials Science and Engineering, Busan 46241, Republic of Korea
Correspondence  Bong-Ki Ryu ,Tel: +82-51-510-3200, Email: bkryu@pusan.ac.kr
Received: 10 May 2016;  Accepted: 7 June 2016.  Published online: 5 December 2016.
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.
Keywords: crystallization, electrical conductivity, catalytic property, polaron
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