Diversity of TiO2: Controlling the Molecular and Electronic Structure of Atomic-Layer-Deposited Black TiO2

被引：51

作者：

Ali-Loytty, Harri ^{[1
]}

Hannula, Markku ^{[1
]}

Saari, Jesse ^{[1
]}

Palmolahti, Lauri ^{[1
]}

Bhuskute, Bela D. ^{[1
]}

Ulkuniemi, Riina ^{[1
]}

Nyyssonen, Tuomo ^{[2
]}

Lahtonen, Kimmo ^{[1
]}

Valden, Mika ^{[1
]}

机构：

[1] Tampere Univ Technol, Lab Photon, Surface Sci Grp, POB 692, FI-33101 Tampere, Finland

[2] Tampere Univ Technol, Lab Mat Sci, Met Technol Grp, FI-33101 Tampere, Finland

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 03期

基金：

芬兰科学院;

关键词：

atomic layer deposition; titanium dioxide; oxide defects; crystallization; protecting overlayers; photocatalysis; water splitting; PHOTOCATALYSIS; ABSORPTION;

D O I：

10.1021/acsami.8b20608

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Visually black, electrically leaky, amorphous titania (am-TiO2) thin films were grown by atomic layer deposition (ALD) for photocatalytic applications. Broad spectral absorbance in the visible range and exceptional conductivity are attributed to trapped Ti3+ in the film. Oxidation of Ti3+ upon heat treatment leads to a drop in conductivity, a color change from black to white, and crystallization of am-TiO2. ALD-grown black TiO2, without any heat treatment, is subject to dissolution in alkaline photoelectrochemical conditions. The best photocatalytic activity for solar water splitting is obtained for completely crystalline white TiO2.

引用

页码：2758 / 2762

页数：5

共 22 条

[1]

[Anonymous], NIST XPS DATABASE 20

[2] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[3] ANOMALOUS OPTICAL ABSORPTION LIMIT IN INSB [J].

BURSTEIN, E .

PHYSICAL REVIEW, 1954, 93 (03) :632-633

[4] Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals [J].

Chen, Xiaobo ;

Liu, Lei ;

Yu, Peter Y. ;

Mao, Samuel S. .

SCIENCE, 2011, 331 (6018) :746-750

[5] Reduced and n-Type Doped TiO2: Nature of Ti3+ Species [J].

Di Valentin, Cristiana ;

Pacchioni, Gianfranco ;

Selloni, Annabella .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (48) :20543-20552

[6] Hole diffusion across leaky amorphous TiO2 coating layers for catalytic water splitting at photoanodes [J].

Guo, Zhendong ;

Ambrosio, Francesco ;

Pasquarello, Alfredo .

JOURNAL OF MATERIALS CHEMISTRY A, 2018, 6 (25) :11804-11810

[7] Review of the anatase to rutile phase transformation [J].

Hanaor, Dorian A. H. ;

Sorrell, Charles C. .

JOURNAL OF MATERIALS SCIENCE, 2011, 46 (04) :855-874

[8] Improved Stability of Atomic Layer Deposited Amorphous TiO2 Photoelectrode Coatings by Thermally Induced Oxygen Defects [J].

Hannula, Markku ;

Ali-Loytty, Harri ;

Lahtonen, Kimmo ;

Sarlin, Essi ;

Saari, Jesse ;

Valden, Mika .

CHEMISTRY OF MATERIALS, 2018, 30 (04) :1199-1208

[9] Sudden approximation in photoemission and beyond [J].

Hedin, L ;

Lee, JD .

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2002, 124 (2-3) :289-315

[10] Amorphous TiO2 coatings stabilize Si, GaAs, and GaP photoanodes for efficient water oxidation [J].

Hu, Shu ;

Shaner, Matthew R. ;

Beardslee, Joseph A. ;

Lichterman, Michael ;

Brunschwig, Bruce S. ;

Lewis, Nathan S. .

SCIENCE, 2014, 344 (6187) :1005-1009

← 1 2 3 →