本发明属于气体传感器与环境检测技术领 域，具体涉及一种基于Fe‑MOF材料衍生的α‑Fe₂O₃丙酮气体传感材料的制备方法。一种Fe-MOF衍生的α‑Fe₂O₃丙酮气体传感材料的制备方法，室温下，将NH₃·H₂O与H₃BTC于去离子水中混合均匀，记为溶液A；将FeCl₂溶液在室温条件下缓慢滴加入A溶液中，得到橙红色的悬浊液，离心，烘干，清洗，最后用NH₄F溶液进行化学处理，干燥，焙烧。本发明制备的α‑Fe₂O₃传感材料具有良好的气敏性能，选择性能优秀，能明显筛分 出丙酮与其它气体。本发明制备的α‑Fe₂O₃传感器的检出限低，能达到ppm级别，稳定性高，可满足早期糖尿病预防的长期检测需求。 

The present invention belongs to the field of gas sensors and environmental detection technology, and specifically relates to a derivative based on Fe-MOF materials α‑Fe₂O₃ acetone gas sensing material. A Fe-MOF derivative α‑Fe₂O₃ acetone gas sensing material, at room temperature, NH₃·H₂O and H₃BTC are uniformly mixed in deionized water, denoted as solution A; Slowly add FeCl2 solution to solution A at room temperature to obtain an orange red suspension. Centrifuge, dry, clean, and finally chemically treat with NH₄F solution, dry, and calcine. The present invention is prepared α‑Fe₂O₃ sensing material has good gas sensing performance, excellent selectivity, and can clearly screen out acetone and other gases. The present invention is prepared α‑Fe₂O₃ sensor has a low detection limit, can reach the ppm level, and has high stability, which can meet the long-term detection needs of early diabetes prevention.