“…Ag based catalysts have attracted widespread interest because of their unique properties for a variety of applications, such as the selective catalytic oxidation (SCO) of NH 3 [1], CO oxidation [2,3], catalytic oxidation of toluene [4,5], HCHO oxidation [6], ethylene epoxidation [7,8] and the selective catalytic reduction (SCR) of NO [9]. In low-temperature NH 3 -SCO reaction, Ag based catalyst has been proven to be one of the most active catalysts, but with a poor N 2 selectivity [10][11][12].…”