10 януари 2023
Kostadinova, O., Popov, I., Stankov, S.M., Kolev, H., Petkov, T..
(
Христо Колев;
)
Abstract
Present work studies the influence of the pretreatment milling media (deionized water (BLTOS-H) and isopropanol (BLTOS-i)) on the surface characteristics, structure, chemical composition and catalytic activity of non-stoichiometric Ba2Sr2La2Ti4O12 perovskites. The IR spectroscopy and XRD analyses shows a difference in the structure and phase composition of the two materials. X-ray photoelectron spectroscopy detects a Ba2+- and La3+-enriched and Sr2+-depleted surface. The BLTOS-i sample appears to exhibit higher specific surface area (SSA) and pore volume in comparison to BLTOS-H. The electrochemical tests showed that BLTOS-H sample have similar behavior to platinum at current densi-ties up to 10 mA cm-2, while BLTOS-i presented highest electrochemical performance among all tested samples over the entire current range.
Karbala International Journal of Modern Science, 9, 1, University of Kerbala, 2023, ISSN:2405-609X, 2405-6103, DOI:10.33640/2405-609X.3272, art. no. 1. SJR (Scopus):0.23, JCR-IF (Web of Science):1.53 Q2 (Scopus)
https://kijoms.uokerbala.edu.iq/home/vol9/iss1/1/
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