Engineering the surface of perovskite La0.5Sr0.5MnO3 for catalytic activity of CO oxidation

• DOI: 10.1039/c4cc00023d
• Publication Date: 2014-06-26T09:33:50Z
• Authors: Keke Huang; Xuefeng Chu; Long Yuan; Wenchun Feng; Xiaofeng Wu; Xiyang Wang; Shouhua Feng
• Keywords: 02 engineering and technology; 0210 nano-technology

A simple treatment of La0.5Sr0.5MnO3 with diluted HNO3 creates more B-sites (rich) on the terminated perovskite surface and improves its catalytic activity toward CO oxidation, and the perovskite catalyst possesses a higher ratio of Mn4+/Mn3+ and thus enhances the O2 adsorption capability, favourable for CO oxidation and catalytic activity.