In situ Growth Synthesis of CuO@Cu‐MOFs Core‐shell Materials as Novel Low‐temperature NH 3 ‐SCR Catalysts

Metal oxides@MOFs core‐shell materials were developed for selective catalytic reduction of NO x by NH 3 (NH 3 ‐SCR). A novel CuO@Cu‐MOFs core‐shell material with CuO as the core and Cu 3 (BTC) 2 as the shell were rationally designed and synthesized by an in situ growth method and used in NH 3 ‐SCR reaction. The prepared CuO@Cu‐MOFs materials combined physicochemical properties of CuO (high NO adsorption stability and excellent surface reducibility) and Cu 3 (BTC) 2 (large specific surface area and abundant acid sites). In addition, the core‐shell materials held large amounts of Brønsted acid sites and abundant adsorbed NO x intermediate species, which benefited NH 3 ‐SCR reaction under low‐temperature. Experimental results demonstrated that CuO@Cu‐MOFs possessed higher low‐temperature catalytic activity than that of pure CuO and Cu 3 (BTC) 2 . Importantly, CuO@Cu‐MOFs performed satisfied stability in NH 3 ‐SCR reaction, which made it to be a potential and promising low‐temperature SCR catalyst.