Nano Archive

Solvothermal synthesis of SrTiO 3 -LnTiO 2 N solid solution and their visible light responsive photocatalytic properties

Sulaeman, U and Yin, S and Suehiro, T and Sato, T (2009) Solvothermal synthesis of SrTiO 3 -LnTiO 2 N solid solution and their visible light responsive photocatalytic properties. IOP Conference Series: Materials Science and Engineering, 1 (1). 012017.

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Official URL: http://stacks.iop.org/1757-899X/1/i=1/a=012017

Abstract

SrTiO 3 -LnTiO 2 N solid solution, Sr 1−x La x TiO 3-y N y , was synthesized by the solvothermal reactions in KOH aqueous solution using [(CH 3 ) 2 CHO] 4 Ti, SrCl 2 .6H 2 O, La(NO 3 ) 3 .6H 2 O and HMT (hexamethylenetetramine) as raw materials. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric and differential thermal analysis (TG-DTA) and diffuse reflectance spectra. The nano particles of perovskite type Sr 1−x La x TiO 3-y N y (x = 0, 0.025, 0.05 and 0.1 named as ST, STN-0.025, STN-0.05 and STN-0.1) were successfully synthesized by solvothermal method. The photocatalytic activity of SrTiO 3 for DeNO x ability in visible light region (>510nm) could be improved by co-doping of La 3+ and N 3− . The high visible light photocatalytic activity of this substance may be due to generating of a new band gap that enables to absorb visible light. The photocatalytic activity of Sr 1−x La x TiO 3-y N y changed with variation of La content. The powder with smaller ratio of La content possessed excellent photocatalytic activity under visible light irradiation.

Item Type:Article
ID Code:11381
Deposited By:Prof. Alexey Ivanov
Deposited On:02 Nov 2011 00:15
Last Modified:02 Nov 2011 00:47

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