Method for preparing ordered mesopore nickel oxide gas-sensing nano material

The invention discloses a method for preparing an ordered mesopore nickel oxide gas-sensing nano material. According to the method, an ordered mesoporous silica material (SBA-15) is used as a template, a nickel oxide nano material is synthesized with the impregnation method, the highly-dispersed mesopore nickel oxide nano material with uniform particle size is obtained through template removal and centrifugal separation, and the mesopore nickel oxide nano material can be used for detecting combustible gas such as acetone. The nickel oxide nano material has the advantages of being high in dispersibility, high in particle size uniformity, high in specific surface area and the like, and has high acetone gas sensitivity and short response recovery time. The high gas sensitivity of the mesopore nickel oxide gas-sensing nano material enables the mesopore nickel oxide gas-sensing nano material to be widely applied to monitoring and alarming of acetone gas.