Synthesis of La/N Co-Doped SrTiO₃ Using Polymerized Complex Method for Visible Light Photocatalysis

Uyi Sulaeman, Shu Yin, Tsugio Sato

Department of Chemistry, Jenderal Soedirman University, Purwokerto, Indonesia.
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan.

DOI: 10.4236/anp.2013.21002                

Abstract

Lanthanum and nitrogen co-doped SrTiO₃ was synthesized using polymerized complex method with Ti(OC₃H₇)₄, SrCl₂·6H₂O and La(NO₃)₃·6H₂O as starting materials followed by calcinations in NH₃. Ethylene glycol and anhydrous citric acid were used as the precursors of synthesis. The samples were characterized using XRD, TEM, DRS, BET, EDX and XPS. The cubic-perovskite type of La/N co-doped SrTiO₃ nanoparticle could be successfully synthesized. The photocatalytic activity of SrTiO₃ for DeNO_x ability in visible light region (λ > 510 nm) could be improved by co-doping of La³⁺ and N^3_. The high visible light photocatalytic activity of this substance was caused by a narrow band gap energy that enables to absorb visible light.

Keywords

Photocatalysis; Visible Light; SrtiO₃; Polymerized Complex; La-Doping; N-Doping

Conflicts of Interest

The authors declare no conflicts of interest.

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