The invention relates to a preparation method of for an
yttrium silicate nanopowder is disclosed, comprising the following steps: analytically pure Y(NO3)3
question mark 6H2O, Na2SiO3
question mark 9H2O and NaOH are added into
distilled water and then stirred for obtaining solution A; the solution A is poured into a
hydrothermal reaction kettle; the hydrothermal temperature is controlled at 120 to 180 DEG C; the reaction time is controlled at 10min to 60min; after the reaction is finished, the solution A is naturally cooled to the
room temperature so as to obtain solution B; the products of the solution B are collected by pumping
filtration of
filter paper, which are then washed and dried for 0.5 to 1h, finally product C which contains
yttrium silicate nanopowder is obtained. By using a
microwave hydrothermal method, the invnetion can rapidly prepare
yttrium silicate nanopowder with controllable
crystal form and size. The controllable
yttrium silicate nanopowder prepared by the process has the advantages of short reaction cycle, good reproducibility, simple process, convenient operation, easy obtaining of raw materials, and lower preparation cost.