Novel synthesis of reed flower-like SmMnO catalyst with enhanced low-temperature activity and SO resistance for NH-SCR.

In this work, a novel co-precipitation coupled solvothermal procedure is proposed to prepare a SmMnO catalyst (SmMnOx-CP + ST) with a reed flower-like structure for the selective catalytic reduction of NO by NH (NH-SCR). Over 90% NO conversion and N selectivity was achieved at a low temperature range (25-200 °C), and 96% NO conversion was achieved in the presence of 100 ppm SO at 75 °C. While the NH-SCR of the SmMnO catalysts prepared by co-precipitation (SmMnO-CP) and solvothermal (SmMnO-ST) methods performed much poorer than the SmMnO-CP + ST catalyst.

A facile route to synthesize n-SnO/p-CuFeO to rapidly degrade toxic methylene blue dye under natural sunlight.

In the present study, the n-SnO/p-CuFeO (p-CFO) complex was prepared by a two-step process. p-CFO synthesized by the molten salt method was coated with SnO synthesized by a facile chemical precipitation method. The formation of n-SnO/p-CFO was confirmed by powder X-ray diffraction (PXRD).