In-situ decorated MOFs-derived Mn-Fe oxides on Fe mesh as novel monolith catalysts for NOx reduction
It is still a challenge to develop metal-based monolith deNOx catalysts with high activity, mass transfer ability and stability. Herein, we proposed a convenient and versatile pathway for the synthesis of novel monolith deNOx catalysts originated from the in-situ immobilization of metal organic framework (MOF) precursors on Fe mesh. Interestingly, the morphology and composition of the catalysts could be modulated by adjusting the synthesis parameters, such as the synthesis time, ligands and precursors, while the characterization results revealed the improvement of oxygen vacancies and Brønsted acid sites lead by the strong interaction between the uniformly distributed active Mn-Fe components. As a result, the novel monolith catalysts demonstrated improved catalytic performance as compared with the traditional catalysts obtained by hydroxide precursors. This work shed lights on the advantages of using MOFs-derived materials in-situ decorated on metal mesh as monolith catalysts and paved a way to design new monolith deNOx catalysts with excellent low-temperature catalytic activity for future attempt.