Monolithic CuMnO2-Nanosheet-Based Catalysts In Situ Grown on Stainless Steel Mesh for Selective Catalytic Reduction of NO with CO

The selective catalytic reduction technology that uses CO as a reductant (CO-SCR) has great potential in addressing nitrogen oxides (NOx) pollution in industry. Herein, we reported the in situ growth of highly efficient CuMnO2 nanosheet catalysts on low-cost stainless steel mesh (SSM) by a hydrothermal method, which exhibited excellent CO-SCR performance. It has been demonstrated that the prepared CuMnO2 nanosheet catalysts with high crystallinity and an exposed (001) plane could realize 100% NO conversion and N2 selectivity at 310 °C, which is comparable to other reported Cu–Mn–O catalysts. Moreover, the reaction mechanism driven by the surface synergetic oxygen vacancy of Cu–□–Mn is also proposed for enhancement of the CO-SCR performance. The good mechanical strength, easy shape processability, and high temperature stability of the inexpensive SSM support, together with the good catalytic performance of the active CuMnO2 component, could make the CuMnO2/SSM monolithic catalyst more favorable for large-scale industry application in de-NOx.