High efficiency hierarchical porous composite microfiltration membrane for high-temperature particulate matter capturing

Abstract Porous intermetallic membrane with extensive interconnected pores are potential candidates as functional materials for high-temperature particulate matter (PM) capturing. However, fabrication of a combined performance high filtration efficiency and oxidation resistance remains challenge. To tackle this issue, hierarchical micro-/nano-dual-scale sized was constructed on the inner cell walls porous support through mutual diffusion chemical reaction. Benefited from its micro/nano-dual-scaled pore structural features, Nb containing TiAl-based composite microfiltration demonstrates ultrahigh PM >2.5 removal (99.58%) favorable oxidation/sulfidation at temperature. These our experimental design strategy, provide insight into designing enhanced durability.