Method for preparing indium oxide cubes through microwave-assisted hydrothermal method

The invention belongs to the technical field of preparation of inorganic nano-composite materials, relates to a method for preparing nano indium oxide cubes and particularly relates to a method for preparing indium oxide cubes through a microwave-assisted hydrothermal method. The method comprises the following steps: preparing a mixed solution of indium nitrate and urea, reacting in microwave, generating an indium hydroxide predecessor through centrifugal washing, and finally obtaining the final product through high-temperature roasting; carrying out preparation of the mixed solution of indium nitrate and urea as follows: weighing indium nitrate and urea which are 1:1 to 10 in molar ratio, adding deionized water for dissolving, and magnetically stirring for 30 min to obtain a uniform, colorless and transparent solution. Indium oxide which is relatively uniform in appearance is prepared through a microwave-assisted reaction, the product adopts a cubic nano-structure, time can be shortened to dozens of minutes