Preparation method of N, N-dimethylformamide lanthanum ferrite gas-sensitive sensing material

The invention relates to a preparation method of an N, N-dimethylformamide lanthanum ferrite gas-sensitive sensing material, which comprises the following steps: (1) weighing La (NO3) 3.6 H2O and Fe (NO3) 3.9 H2O, dissolving in water, dropwise adding an ammonia water solution, and heating in a water bath; and (2) drying the reaction product, and calcining to obtain the lanthanum ferrite gas-sensitive sensing material. Compared with the prior art, the method is simple in process, low in synthesis temperature, excellent in gas selectivity and easy to industrialize. 本发明涉及一种N,N二甲基甲酰胺铁酸镧气敏传感材料的制备方法，包括以下步骤：(1)称取La(NO3)3·6H2O、Fe(NO3)3·9H2O溶于水中，再滴加入氨水溶液，水浴加热；(2)将反应产物烘干后，煅烧，得到铁酸镧气敏传感材料。与现有技术相比，本发明工艺简单，合成温度低，气体选择性优良，易于产业化。