Lanthanum and nitrogen co-doped SrTiO3 powders as visible light sensitive photocatalyst

Jinshu Wang; Shu Yin; Masakazu Komatsu; Tsugio Sato

doi:10.1016/j.jeurceramsoc.2004.07.027

Lanthanum and nitrogen co-doped SrTiO3 powders as visible light sensitive photocatalyst

Jinshu Wang, Shu Yin, Masakazu Komatsu, Tsugio Sato

Research output: Contribution to journal › Article › peer-review

124 Citations (Scopus)

Abstract

Lanthanum and nitrogen co-doped SrTiO₃ was prepared by a mechanochemical reaction method using SrTiO₃, urea and La₂O₃ as the raw materials. Nitrogen-doped SrTiO₃ could be prepared by heating the mixture of SrTiO₃ and La₂O₃ under flowing NH₃ gas at 600 °C. The sample prepared with 0.2 mol% La₂O_3, 22 mol% urea and 77.8 mol% SrTiO₃ which has nearly the same nitrogen and lanthanum doping atomic fractions could be obtained by a mechanochemical method and exhibited high photocatalytic activities. Under the irradiation of light with wavelengths larger than 400 and 290 nm, the photocatalytic activity of nitrogen and lanthanum co-doped SrTiO₃ was 2.6 and two times greater than that of pure SrTiO₃. A new absorption edge, which was formed in the visible light region and higher visible light absorption after co-doping were the reason for the high visible light photocatalytic activity of this substance.

Original language	English
Pages (from-to)	3207-3212
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	25
Issue number	13
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2004.07.027
Publication status	Published - 2005 Aug 1

Keywords

Doping
Functional applications
Milling
Optical properties
Photocatalysis
SrTiO
Titanates

ASJC Scopus subject areas

Ceramics and Composites

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10.1016/j.jeurceramsoc.2004.07.027

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title = "Lanthanum and nitrogen co-doped SrTiO3 powders as visible light sensitive photocatalyst",

abstract = "Lanthanum and nitrogen co-doped SrTiO3 was prepared by a mechanochemical reaction method using SrTiO3, urea and La2O3 as the raw materials. Nitrogen-doped SrTiO3 could be prepared by heating the mixture of SrTiO3 and La2O3 under flowing NH3 gas at 600 °C. The sample prepared with 0.2 mol% La2O3, 22 mol% urea and 77.8 mol% SrTiO3 which has nearly the same nitrogen and lanthanum doping atomic fractions could be obtained by a mechanochemical method and exhibited high photocatalytic activities. Under the irradiation of light with wavelengths larger than 400 and 290 nm, the photocatalytic activity of nitrogen and lanthanum co-doped SrTiO3 was 2.6 and two times greater than that of pure SrTiO3. A new absorption edge, which was formed in the visible light region and higher visible light absorption after co-doping were the reason for the high visible light photocatalytic activity of this substance.",

keywords = "Doping, Functional applications, Milling, Optical properties, Photocatalysis, SrTiO, Titanates",

author = "Jinshu Wang and Shu Yin and Masakazu Komatsu and Tsugio Sato",

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doi = "10.1016/j.jeurceramsoc.2004.07.027",

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T1 - Lanthanum and nitrogen co-doped SrTiO3 powders as visible light sensitive photocatalyst

AU - Wang, Jinshu

AU - Yin, Shu

AU - Komatsu, Masakazu

AU - Sato, Tsugio

PY - 2005/8/1

Y1 - 2005/8/1

N2 - Lanthanum and nitrogen co-doped SrTiO3 was prepared by a mechanochemical reaction method using SrTiO3, urea and La2O3 as the raw materials. Nitrogen-doped SrTiO3 could be prepared by heating the mixture of SrTiO3 and La2O3 under flowing NH3 gas at 600 °C. The sample prepared with 0.2 mol% La2O3, 22 mol% urea and 77.8 mol% SrTiO3 which has nearly the same nitrogen and lanthanum doping atomic fractions could be obtained by a mechanochemical method and exhibited high photocatalytic activities. Under the irradiation of light with wavelengths larger than 400 and 290 nm, the photocatalytic activity of nitrogen and lanthanum co-doped SrTiO3 was 2.6 and two times greater than that of pure SrTiO3. A new absorption edge, which was formed in the visible light region and higher visible light absorption after co-doping were the reason for the high visible light photocatalytic activity of this substance.

AB - Lanthanum and nitrogen co-doped SrTiO3 was prepared by a mechanochemical reaction method using SrTiO3, urea and La2O3 as the raw materials. Nitrogen-doped SrTiO3 could be prepared by heating the mixture of SrTiO3 and La2O3 under flowing NH3 gas at 600 °C. The sample prepared with 0.2 mol% La2O3, 22 mol% urea and 77.8 mol% SrTiO3 which has nearly the same nitrogen and lanthanum doping atomic fractions could be obtained by a mechanochemical method and exhibited high photocatalytic activities. Under the irradiation of light with wavelengths larger than 400 and 290 nm, the photocatalytic activity of nitrogen and lanthanum co-doped SrTiO3 was 2.6 and two times greater than that of pure SrTiO3. A new absorption edge, which was formed in the visible light region and higher visible light absorption after co-doping were the reason for the high visible light photocatalytic activity of this substance.

KW - Doping

KW - Functional applications

KW - Milling

KW - Optical properties

KW - Photocatalysis

KW - SrTiO

KW - Titanates

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Lanthanum and nitrogen co-doped SrTiO3 powders as visible light sensitive photocatalyst

Abstract

Keywords

ASJC Scopus subject areas

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