High-Pressure Polymorph of NaBiO3

被引：8

作者：

Naa, Octavianti ^{[1
]}

Kumada, Nobuhiro ^{[1
]}

Miura, Akira ^{[2
]}

Takei, Takahiro ^{[1
]}

Azuma, Masaki ^{[3
]}

Kusano, Yoshihiro ^{[4
]}

Oka, Kengo ^{[5
]}

机构：

[1] Univ Yamanashi, Ctr Crystal Sci & Technol, 7-32 Miyamae Cho, Kofu, Yamanashi 4008511, Japan

[2] Hokkaido Univ, Fac Engn, Kita Ku, Kita 13,Nishi 8, Sapporo, Hokkaido 0608628, Japan

[3] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan

[4] Kurashiki Univ Sci & Arts, Dept Appl Arts & Design, 2640 Nishinoura,Tsurajima Cho, Kurashiki, Okayama 7128505, Japan

[5] Chuo Univ, Fac Sci & Engn, Bunkyo Ku, 1-13-27 Kasuga, Tokyo 1128551, Japan

来源：

INORGANIC CHEMISTRY | 2016年 / 55卷 / 12期

关键词：

VISIBLE-LIGHT IRRADIATION; ILMENITE-TYPE; HYDROTHERMAL SYNTHESIS; POWDER DIFFRACTION; CRYSTAL-STRUCTURES; BISMUTHATES; NANBO3; OXIDES; NASBO3;

D O I：

10.1021/acs.inorgchem.6b00947

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new high-pressure polymorph of NaBiO3 (hereafter beta-NaBiO3) was synthesized under the conditions of 6 GPa and 600 degrees C. The powder X-ray diffraction pattern of this new phase was indexed with a hexagonal cell of a = 9.968(1) angstrom and c = 3.2933(4) angstrom. Crystal structure refinement using synchrotron powder X-ray diffraction data led to R-WP = 8.53% and R-P = 5.55%, and the crystal structure was closely related with that of Ba2SrY6O12. No photocatalytic activity for phenol decomposition was observed under visible-light irradiation in spite of a good performance for its mother compound, NaBiO3. The optical band-gap energy of beta-NaBiO3 was narrower than that of NaBiO3, which was confirmed with density of states curves simulated by first-principles density functional theory calculation.

引用

页码：5747 / 5749

页数：3

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