Preparation method of amorphous multi-component refractory transition metal oxide nanoparticles

The invention discloses a preparation method of amorphous multi-component refractory transition metal oxide nanoparticles, which comprises the following steps: respectively adding acid or alkali into a metal salt solution of refractory transition metal to obtain four different reaction solutions, mixing the four reaction solutions, and carrying out hydrothermal reaction to obtain the amorphous multi-component refractory transition metal oxide nanoparticles. And drying the precipitate obtained by the hydrothermal reaction to obtain the entropy-stable single-phase multi-component refractory transition metal oxide nanoparticles. The adopted raw material is common refractory transition metal salt, so that the price is low, and the cost is low; by adopting a hydrothermal method, the raw materials are uniformly mixed and fully reacted under a liquid phase condition at a lower reaction temperature to obtain the entropy-stable single-phase multi-component refractory transition metal oxide, the reaction condition is m