| 主权项 |
1. A method of manufacturing a zinc oxide powder comprising:
synthesizing a mesoporous zinc oxide precursor powder by adding an aqueous solution of zinc chloride to an aqueous solution of sodium carbonate whilst agitating to cause precipitation of a mesoporous zinc carbonate powder wherein the molar ratio of zinc chloride to sodium carbonate present when the aqueous solution of zinc chloride and the aqueous solution of sodium carbonate are reacted is at least 1:2; and, heat treating a mesoporous zinc precursor material to form the mesoporous zinc oxide powder at a heat treatment temperature in the range of 250-575° C., and, wherein the zinc oxide powder comprises mesoporous zinc oxide aggregates comprising a plurality of primary zinc oxide crystallites bonded together at shared interfaces, the aggregates having a number average aggregate size of at least 0.8 micron, wherein the aggregates have a total mesopore volume of at least 0.5 cm3/g, a pore size in the range of 2 nm to 100 nm, and, a surface area in the range of 20 to 70 m2/g. |
