Fabrication of ultrafine Pd nanoparticles on 3D ordered macroporous TiO2 for enhanced catalytic activity during diesel soot combustion

A nanocatalyst composed of three-dimensionally ordered macroporous TiO2-supported ultrafine 1.1 nm Pd nanoparticles was readily fabricated by gas bubbling-assisted membrane reduction. This material exhibited high catalytic activity and good stability during diesel soot combustion.