Preparation method of three dimensional rGO / In2O3 composite room temperature gas-sensitive material

The invention provides a preparation method of a rGO / In2O3 composite room temperature gas-sensitive material with mesoporous structure cubic In2O3 grown on three dimensional reduction graphene oxide (rGO). The preparation method includes the following steps: using graphene oxide GO, tetrahydrate indium trichloride and urea as raw materials, and using trisodium citrate as a surfactant and a reductant for hydrothermal method and calcinations to obtain the omposite room temperature gas-sensitive material with the mesoporous structure cubic In2O3 uniformly distributed on a three dimensional rGO carrier overlapped into a pore structure. The production process is simple. The prepared mesoporous structure cubic In2O3 is uniformly distributed on the three dimensional rGO carrier overlapped into the pore structure, and the gas-sensitive detection material with sensitivity to trimethylamine gas at room temperature is obtained. 本发明提供了种介孔结构的立方体氧化铟生长在三维还原氧化石墨烯（rGO）上的复合室温气敏材料的制备方法。该制备方法具体包括：以氧化石墨烯GO，四水氯化铟，尿素为原料，以柠檬酸三钠为表面