Metal-organic framework derived core-shell PrFeO3-functionalized α-Fe2O3 nano-octahedrons as high performance ethyl acetate sensors

•Porous core-shell PrFeO3/α-Fe2O3 nano-octahedrons were synthesized via a facile one-step hydrothermal.•This PrFeO3/α-Fe2O3-based sensor possessed a rapid response and recovery process.•The PrFeO3/α-Fe2O3-based sensor exhibited low operating temperature and its response was three times to pure α-Fe2O3.•Influence on ethyl acetate sensing properties caused by the formation of p-n heterojunction was discussed.ax