Synthesis, structure and photocatalytic activity of layered LaOInS2

Miura, Akira; Oshima, Takayoshi; Maeda, Kazuhiko et al.

Membrane water treatment, 2017, 5(27), 14270-14277

Permalink : https://hdl.handle.net/2115/71319

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アクセス権
open access
URI
https://hdl.handle.net/2115/71319
タイトル
Synthesis, structure and photocatalytic activity of layered LaOInS2
著者
Miura, Akira ; Oshima, Takayoshi ; Maeda, Kazuhiko ; Mizuguchi, Yoshikazu ; Moriyoshi, Chikako ; Kuroiwa, Yoshihiro ; Meng, Yu ; Wen, Xiao-Dong ; Nagao, Masanori ; Higuchia, Mikio ; Tadanaga, Kiyoharu
e-Rad_Researcher
10603201
著者名
Miura, Akira
著者名
Oshima, Takayoshi
著者名
Maeda, Kazuhiko
著者名
Mizuguchi, Yoshikazu
著者名
Moriyoshi, Chikako
著者名
Kuroiwa, Yoshihiro
著者名
Meng, Yu
著者名
Wen, Xiao-Dong
著者名
Nagao, Masanori
著者名
Higuchia, Mikio
著者名
Tadanaga, Kiyoharu
言語
英語
発行日
2017-07-21
出版者
Royal Society of Chemistry
収録物名
Membrane water treatment
巻(号)
5(27)
ページ
14270-14277
抄録
Indium oxychalcogenides would be attractive semiconductors considering the practical use of indium oxides and sulfides such as indium-tin oxides (ITO) and copper-indium-gallium diselenides (CIGS). In this work, a novel layered indium oxysulfide, LaOInS2, was synthesized by a metathesis reaction between LaOCl and NaInS2. Synchrotron X-ray diffraction showed that LaOInS2 consisted of alternately stacked rocksalt-type In-S and PbO-type La-O layers. The InS6 octahedron had split In sites with abnormally large anisotropic atomic displacement factors. LaOInS2 was found to be a direct semiconductor. Density functional theory calculations exhibited well-dispersed bands composed of In 5s/5p and S 3p/O 2p orbitals with a band gap of similar to 2.4 eV, which was close to the experimental value estimated by optical absorption (2.64 eV). Under visible light irradiation this visible-light absorption, LaOInS2 exhibited photocatalytic activity for H-2 and O-2 evolution from water with the aid of Pt and IrO2 cocatalysts, respectively.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
2050-7488
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1039/c7ta04440b