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采用机械－物理固相效应装置，获取纳米级原料ＢａＣＯ３和ＴｉＯ２混合粉，经粉末冶金技术合成四方晶型ＢａＴｉＯ３纳米粉。ＴＥＭ分析表明，粒度在数十纳米级。采用这种纳米ＢａＴｉＯ３粉末，按一定比例和ＣｕＯ配制烧结而成的ＢａＴｉＯ３－ＣｕＯ电容型气敏元件，因具有较大的比表面积，其敏感性能大大提高，这为今后开发出一系列极有实用价值的电容型气敏元件创造了必要条件。该制备方法装置简便、投资少、适合大规模工业化生产。
The mechanical-physical solid-phase reaction device is used to obtain the mixed powder of BaCO3 and TiO2 which is a nano-scale raw material, and the tetragonal BaTiO3 nano powder is synthesized by the powder metallurgy technique. TEM analysis shows that the particle size is in the tens of nanometers. The BaTiO3-CuO capacitive gas sensor with the nano-BaTiO3 powder sintered in a certain proportion and CuO is greatly increased in sensitivity due to its large specific surface area, which is of great practical application in the future The value of the capacitive gas sensor created the necessary conditions. The preparation method is simple, less investment, suitable for large-scale industrial production.