Nanoscale barium titanate powder and preparation process thereof

The invention discloses nanoscale barium titanate powder and a preparation process thereof, and relates to the technical field of inorganic powder synthesis, and the preparation process of the nanoscale barium titanate powder comprises the following steps: uniformly mixing 280-320 parts by mass of deionized water, 20-30 parts by mass of monohydric alcohol and 78.85-80.85 parts by mass of titanium dioxide to obtain a mixed material, and keeping the pH value of the mixed material at 5-6, heating the mixed material to 45-60 DEG C, adding 0.5-1.5 parts of a chelating titanate coupling agent into the mixed material, carrying out heat preservation stirring for 6-9 h, and cooling to normal temperature to obtain a modified titanium dioxide material; 195.34-199.34 parts of barium carbonate and 0.1-0.3 part of a defoaming agent are taken and added into the modified titanium dioxide material, ball milling is conducted for 4-5 h, and ball-milled slurry is obtained; and carrying out spray drying on the ball-milled slurry,