Hydrogenated Anatase: Strong Photocatalytic Dihydrogen Evolution without the Use of a Co-Catalyst

被引：88

作者：

Liu, Ning ^{[1
]}

Schneider, Christopher ^{[1
]}

Freitag, Detlef ^{[2
]}

Venkatesan, Umamaheswari ^{[3
]}

Marthala, V. R. Reddy ^{[3
]}

Hartmann, Martin ^{[3
]}

Winter, Benjamin ^{[4
]}

Spiecker, Erdmann ^{[4
]}

Osvet, Andres ^{[5
]}

Zolnhofer, Eva M. ^{[6
]}

Meyer, Karsten ^{[6
]}

Nakajima, Tomohiko ^{[7
]}

Zhou, Xuemei ^{[1
]}

Schmuki, Patrik ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Mat Sci WW 4, LKO, D-91058 Erlangen, Germany

[2] Univ Erlangen Nurnberg, Chair Separat Sci & Technol, High Pressure Lab, D-91058 Erlangen, Germany

[3] Univ Erlangen Nurnberg, ECRC, D-91058 Erlangen, Germany

[4] Univ Erlangen Nurnberg, Ctr Nanoanal & Electron Microscopy CENEM, D-91058 Erlangen, Germany

[5] Univ Erlangen Nurnberg, Dept Mat Sci 6, iMEET, D-91058 Erlangen, Germany

[6] Univ Erlangen Nurnberg, D-91058 Erlangen, Germany

[7] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 51期

关键词：

co-catalyst; hydrogenation; titanium(III); TiO2; water splitting; TIO2 NANOTUBE ARRAYS; TITANIUM-DIOXIDE; VISIBLE-LIGHT; H-1-NMR SPECTROSCOPY; NANOWIRE ARRAYS; THIN-FILMS; WATER; PHOTOLUMINESCENCE; NANOCRYSTALS; TI3+;

D O I：

10.1002/anie.201408493

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The high-pressure hydrogenation of commercially available anatase or anatase/rutile TiO2 powder can create a photocatalyst for H-2 evolution that is highly effective and stable without the need for any additional co-catalyst. This activation effect cannot be observed for rutile; however, for anatase/rutile mixtures, a strong synergistic effect can be found (similar to results commonly observed for noble-metal-decorated TiO2). EPR and PL measurements indicated the intrinsic co-catalytic activation of anatase TiO2 to be due to specific defect centers formed during hydrogenation. These active centers can be observed specifically for high-pressure hydrogenation; other common reduction treatments do not result in this effect.

引用

页码：14201 / 14205

页数：5

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