Triple-shelled NiMnO hollow spheres as an efficient catalyst for low-temperature selective catalytic reduction of NO with NH

Unique triple-shelled NiMn 2 O 4 hollow spheres are fabricated by a facile solvothermal method. Owing to its particular triple shell structure, the as prepared NiMn 2 O 4 catalyst exhibits superior low-temperature NH 3 -SCR catalytic performance, achieving above 90% NO x conversion in the temperature range from 100 °C to 225 °C. Unique triple-shelled NiMn 2 O 4 hollow spheres are fabricated by a facile solvothermal method.