Acetone sensor, preparation method and application

The invention belongs to the technical field of gas sensor preparation, and discloses an acetone sensor, a preparation method and application, the preparation method of the acetone sensor comprises the following steps: taking zinc nitrate and ferric nitrate as metal salts, deionized water as a solvent and NaCl as a structure template directly, and adjusting the morphology and structure of ZnFe2O4 by controlling the content of NaCl; znFe2O4 solid and folded hollow microsphere materials are synthesized through a one-step chemical vapor deposition method; the gas sensor based on the ZnFe2O4 solid and folded hollow microsphere material is obtained. The green template chlorine used in the invention has the advantages of good thermal stability, no pollution, easy removal without any strict chemical ablation, no chemical reaction and the like, and avoids the problems of high template cost, tedious synthesis process, harsh chemical etching or pyrolysis involved in the removal process and the like in the conventional