Visible light responsive porous Lanthanum-doped Ag3PO4 photocatalyst with high photocatalytic water oxidation activity

Ying Peng Xie; Guo Sheng Wang

doi:10.1016/j.jcis.2014.05.020

Visible light responsive porous Lanthanum-doped Ag3PO4 photocatalyst with high photocatalytic water oxidation activity

J Colloid Interface Sci. 2014 Sep 15:430:1-5. doi: 10.1016/j.jcis.2014.05.020. Epub 2014 May 22.

Authors

Ying Peng Xie¹, Guo Sheng Wang²

Affiliations

¹ College of Chemical Engineering, Shenyang University of Chemical Technology, No. 11 St., Economical and Technological Development Zone of Shenyang, 110142, China. Electronic address: yingpeng1985@126.com.
² College of Chemical Engineering, Shenyang University of Chemical Technology, No. 11 St., Economical and Technological Development Zone of Shenyang, 110142, China.

PMID: 24998046
DOI: 10.1016/j.jcis.2014.05.020

Abstract

This paper report a facile route of synthesizing Ag3PO4 crystal with smooth surface, and La-doped Ag3PO4 crystal with porous surface by accurately controlling the kinetic parameters during chemical precipitation process. As a result of surface modification induced by La doping, the La-doped Ag3PO4 crystal shows a higher photocatalytic activity than Ag3PO4 crystal in O2 evolution from water splitting. The improved photocatalytic activity of La-doped Ag3PO4 is attributed to the synergistic effects of porous surface structure, abundant surface defects and increased surface area. The result also shows that La doping concentration has a remarkable effect on the photocatalytic activity of Ag3PO4.

Keywords: Ag(3)PO(4); La doping; O(2) evolution; Photocatalytic water splitting; Surface modification.