Xie Ying Peng, Wang Guo Sheng
College of Chemical Engineering, Shenyang University of Chemical Technology, No. 11 St., Economical and Technological Development Zone of Shenyang, 110142, China.
College of Chemical Engineering, Shenyang University of Chemical Technology, No. 11 St., Economical and Technological Development Zone of Shenyang, 110142, China.
J Colloid Interface Sci. 2014 Sep 15;430:1-5. doi: 10.1016/j.jcis.2014.05.020. Epub 2014 May 22.
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.
本文报道了一种通过精确控制化学沉淀过程中的动力学参数来合成表面光滑的Ag3PO4晶体以及表面多孔的La掺杂Ag3PO4晶体的简便方法。由于La掺杂引起的表面改性，La掺杂的Ag3PO4晶体在光催化水分解产氧方面表现出比Ag3PO4晶体更高的光催化活性。La掺杂的Ag3PO4光催化活性的提高归因于多孔表面结构、丰富的表面缺陷和增加的表面积的协同效应。结果还表明，La掺杂浓度对Ag3PO4的光催化活性有显著影响。
