ZnO bulky porous nanosolids have been successfully prepared by the solvothermal hot press method using ZnO nanoparticles, deionized water and octylamine as the starting materials. The experimental results showed that, with the decrease of ZnO nanoparticle/water ratio, the uniformity of the pore diameter of ZnO bulky porous nanosolids became poor, while the surface area and porosity were increased. Furthermore, when octylamine was added, the surface area and porosity of ZnO bulky porous nanosolids gradually increased with the increase of the octylamine content. Compared with the ZnO bulky porous nanosolids prepared without octylamine, the samples prepared with octylamine have slightly less surface area and porosity, but the uniformity of the pore diameter was improved. The FT-IR measurement results of the ZnO bulk porous nanosolids indicated that almost all the deionized water and octylamine were removed from the samples during the solvothermal hot press process.

Key words: ZnO nanoparticle, bulky porous nanosolid, solvothermal hot press method, porosity