Lead Bismuth Oxyhalides PbBiO2X (X = Cl, Br) as Visible-Light-Responsive Photocatalysts for Water Oxidation: Role of Lone-Pair Electrons in Valence Band Engineering
Hajime Suzuki
1
,
Hironobu Kunioku
1
,
Masanobu Higashi
1
,
Osamu TOMITA
1
,
DAICHI KATO
1
,
Hiroshi KAGEYAMA
1, 2
,
Ryu-ta Abe
1, 2
Тип публикации: Journal Article
Дата публикации: 2018-08-10
scimago Q1
wos Q1
БС1
SJR: 2.065
CiteScore: 12.0
Impact factor: 7.0
ISSN: 08974756, 15205002
Materials Chemistry
General Chemistry
General Chemical Engineering
Краткое описание
We show that layered oxyhalides PbBiO2X (X = Cl, Br, I) with a Sillen-type structure possess band levels appropriate for visible-light-induced water splitting. Under visible light, PbBiO2Cl and PbBiO2Br with band gap (BG) of 2.51 and 2.48 eV, respectively, stably oxidized water to O2 in the presence of an Fe3+ electron acceptor. A comparison with structurally related SrBiO2Cl and BaBiO2Cl (BG = 3.55 and 3.54 eV) combined with DFT calculations revealed a significant interaction between O 2p and Pb 6s orbitals leading to the upward shift of the valence band maximum in PbBiO2X as compared with (Sr,Ba)BiO2Cl. Z-scheme water splitting into H2 and O2 has been demonstrated using PbBiO2Cl as an O2-evolving photocatalyst, coupled with an appropriate H2-evolving photocatalyst in the presence of an Fe3+/Fe2+ redox mediator.
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Suzuki H. et al. Lead Bismuth Oxyhalides PbBiO2X (X = Cl, Br) as Visible-Light-Responsive Photocatalysts for Water Oxidation: Role of Lone-Pair Electrons in Valence Band Engineering // Chemistry of Materials. 2018. Vol. 30. No. 17. pp. 5862-5869.
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Suzuki H., Kunioku H., Higashi M., TOMITA O., KATO D., KAGEYAMA H., Abe R. Lead Bismuth Oxyhalides PbBiO2X (X = Cl, Br) as Visible-Light-Responsive Photocatalysts for Water Oxidation: Role of Lone-Pair Electrons in Valence Band Engineering // Chemistry of Materials. 2018. Vol. 30. No. 17. pp. 5862-5869.
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TY - JOUR
DO - 10.1021/acs.chemmater.8b01385
UR - https://doi.org/10.1021/acs.chemmater.8b01385
TI - Lead Bismuth Oxyhalides PbBiO2X (X = Cl, Br) as Visible-Light-Responsive Photocatalysts for Water Oxidation: Role of Lone-Pair Electrons in Valence Band Engineering
T2 - Chemistry of Materials
AU - Suzuki, Hajime
AU - Kunioku, Hironobu
AU - Higashi, Masanobu
AU - TOMITA, Osamu
AU - KATO, DAICHI
AU - KAGEYAMA, Hiroshi
AU - Abe, Ryu-ta
PY - 2018
DA - 2018/08/10
PB - American Chemical Society (ACS)
SP - 5862-5869
IS - 17
VL - 30
SN - 0897-4756
SN - 1520-5002
ER -
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@article{2018_Suzuki,
author = {Hajime Suzuki and Hironobu Kunioku and Masanobu Higashi and Osamu TOMITA and DAICHI KATO and Hiroshi KAGEYAMA and Ryu-ta Abe},
title = {Lead Bismuth Oxyhalides PbBiO2X (X = Cl, Br) as Visible-Light-Responsive Photocatalysts for Water Oxidation: Role of Lone-Pair Electrons in Valence Band Engineering},
journal = {Chemistry of Materials},
year = {2018},
volume = {30},
publisher = {American Chemical Society (ACS)},
month = {aug},
url = {https://doi.org/10.1021/acs.chemmater.8b01385},
number = {17},
pages = {5862--5869},
doi = {10.1021/acs.chemmater.8b01385}
}
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Suzuki, Hajime, et al. “Lead Bismuth Oxyhalides PbBiO2X (X = Cl, Br) as Visible-Light-Responsive Photocatalysts for Water Oxidation: Role of Lone-Pair Electrons in Valence Band Engineering.” Chemistry of Materials, vol. 30, no. 17, Aug. 2018, pp. 5862-5869. https://doi.org/10.1021/acs.chemmater.8b01385.