Tantalum doped BaZrO3 for efficient photocatalytic hydrogen generation by water splitting

被引：36

作者：

Khan, Ziyauddin ^{[1
]}

Qureshi, Mohammad ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Mat Sci Lab, Dept Chem, Gauhati 781039, Assam, India

来源：

CATALYSIS COMMUNICATIONS | 2012年 / 28卷

关键词：

BaZrO3; Photocatalytic activity; Hydrogen generation; Water splitting; VISIBLE-LIGHT; H-2; HETEROARRAYS; EVOLUTION; ATAO(3); TIO2; ZNO; O-2; NA;

D O I：

10.1016/j.catcom.2012.08.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ta doped BaZrO3 photocatalyst with a cubic perovskite structure was synthesized using precipitation from homogenous solution method. After calcination, the obtained BaZr1-xTaxO3 (x = 0, 0.01, 0.02, 0.03. 0.04 and 0.05) samples were characterized by powder X-ray diffraction, UV-vis diffuse reflectance spectroscopy, surface area analyses and photocatalytic activity. As-prepared BaZr1-xTaxO3 samples show efficient hydrogen generation by water splitting without addition of any co-catalyst under UV-vis light irradiation. The highest hydrogen production rate (180 mu mol/h) was achieved by BaZr0.96Ta0.04O3 which could be attributed to extended absorption in visible region and surface area. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：82 / 85

页数：4

共 35 条

[1] 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

[2] Hierarchically Grown Urchinlike CdS@ZnO and CdS@Al2O3 Heteroarrays for Efficient Visible-Light-Driven Photocatalytic Hydrogen Generation [J].

Barpuzary, Dipankar ;

Khan, Ziyauddin ;

Vinothkumar, Natarajan ;

De, Mahuya ;

Qureshi, Mohammad .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (01) :150-156

[3] Pb-free semiconductor ferroelectrics: A theoretical study of Pd-substituted Ba(Ti1-xCex)O3 solid solutions [J].

Bennett, Joseph W. ;

Grinberg, Ilya ;

Davies, Peter K. ;

Rappe, Andrew M. .

PHYSICAL REVIEW B, 2010, 82 (18)

[4] Band gap tuning of lead-substituted BaSnO3 for visible light photocatalysis [J].

Borse, Pramod H. ;

Joshi, Upendra A. ;

Ji, Sang Min ;

Jang, Jum Suk ;

Lee, Jae Sung ;

Jeong, Euh Duck ;

Kim, Hyun Gyu .

APPLIED PHYSICS LETTERS, 2007, 90 (03)

[5] Preparation of nanosized barium zirconate powder by thermal decomposition of urea in an aqueous solution containing barium and zirconium, and by calcination of the precipitate [J].

Boschini, F ;

Robertz, B ;

Rulmont, A ;

Cloots, R .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (16) :3035-3042

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

BURSTEIN, E .

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

[7] Introduction of a tolerance factor for the Nd2CuO4 (T')-type structure [J].

Chen, BH .

JOURNAL OF SOLID STATE CHEMISTRY, 1996, 125 (01) :63-66

[8] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

[9] Photocatalytic H2 evolution under visible light from aqueous methanol solution on NaBixTa1-xO3 prepared by spray pyrolysis [J].

Kang, Hyun Woo ;

Lim, Sung Nam ;

Park, Seung Bin .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (05) :4026-4035

[10] Visible light driven photocatalytic hydrogen evolution and photophysical properties of Bi3+ doped NaTaO3 [J].

Kanhere, Pushkar ;

Zheng, Jianwei ;

Chen, Zhong .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (06) :4889-4896

← 1 2 3 4 →