| abstract |
The invention relates to the technical field of porous materials, and provides a three-dimensional porous self-supporting NiO/ZnO heterojunction material and a preparation method thereof. In the present invention, the precursor solution containing high molecular polymer, nickel source, zinc source and water is subjected to freezing treatment to freeze the water in the solution into ice crystals, and then the ice crystals are removed by de-icing treatment to form macroporous channels, and finally the high pore size is removed by calcination. The molecular polymer forms micropores and mesopores, and at the same time, the nickel source is decomposed into NiO and the zinc source is decomposed into ZnO through calcination, and the accumulation of NiO particles and ZnO particles will also form macropores, thereby obtaining three-dimensional porous self-supporting NiO/ZnO Heterojunction materials. The examples show that the preparation method provided by the present invention is simple to operate, does not require template removal, and does not require strict control of experimental conditions. |