Vacuum-Assisted Impregnation Hard-Templating Fabrication of 3D Ordered Mesoporous Neodymium Oxide

Mesoporous neodymium oxides with ordered three-dimensional(3D) cubic polycrystalline structure were fabricated through vacuum-assisted impregnation and mill impregnation route using ordered mesoporous SiO2(KIT-6) as the hard template,nitrate neodymium as metal source.The as-prepared materials were characterized by XRD,TEM and N2 adsorption-desorption.It was found that the mesoporous Nd2O3 sample obtained by vacuum-assisted method had a higher surface area(117 m2·g-1) than that(84 m2·g-1) of mill impregnation and had a better 3D mesoprosity.