In-situ observation of nitrogen monoxide adsorption on perovskite-type MTiO3 (M = Sr, Ba)

Strontium titanate (SrTiO3; STO) and barium titanate (BaTiO3; BTO) powders were prepared using the solid-state reaction method. To study the tendency for nitrogen monoxide (NO) to adsorb on STO and BTO surfaces, we observed the morphology of the powders, calculated the specific surface areas, and ma...

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Published inJournal of the Ceramic Society of Japan Vol. 124; no. 5; pp. 579 - 583
Main Authors FUJIMOTO, Kenjiro, ISHIDUKA, Yuto, YAMAGUCHI, Yuki
Format Journal Article
LanguageJapanese
Published The Ceramic Society of Japan 01.01.2016
Subjects
Adsorption
DRIFTs
Nitrogen monoxide
Perovskite
TPD
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Summary:Strontium titanate (SrTiO3; STO) and barium titanate (BaTiO3; BTO) powders were prepared using the solid-state reaction method. To study the tendency for nitrogen monoxide (NO) to adsorb on STO and BTO surfaces, we observed the morphology of the powders, calculated the specific surface areas, and made adsorption/desorption observations using scanning electron microscopy (SEM), nitrogen gas adsorption/desorption isotherms under 77 K, temperature programmed desorption (TPD), and diffuse reflectance fourier transformed spectroscopy (DRIFTs). The average STO and BTO powder particle size was 0.2 µm. The specific surface areas of the non-porous STO and BTO powders were 3 and 4 m2 g−1, respectively. TPD and DRIFTs measurements revealed the NO adsorption properties of the STO and BTO powders in the presence of oxygen gas. Additionally, it was considered that the adsorbed NO was formed as nitrates [M(NO3)2, M = Sr, Ba] on surface of each powder.
ISSN:1882-0743
1348-6535
DOI:10.2109/jcersj2.15281