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CN108169292B 一种Au和Cl共修饰的LaFeO3基乙醇气体传感器及其制备方法 失效 - 权利终止

一种Au和Cl共修饰的LaFeO3基乙醇气体传感器及其制备方法
摘要：
本发明属气体传感器制备技术领域，提供一种Au和Cl共修饰的LaFeO3基乙醇气体传感器及其制备方法，LaFeO3溶液中加入与其质量比为1:100的质量分数为1%的HAuCl4水溶液，溶胶凝胶法制备Au和Cl共同修饰的LaFeO3纳米粉体，制备成旁热式陶瓷管结构气体传感器元件。制备的气体传感器元件对乙醇的最佳工作温度为128℃；在最佳工作温度下对100ppm乙醇的气体响应为47.7，96小时后无太大变化，有很好的稳定性；对100ppm DMF、二氯甲烷、正己烷、二氧化碳、氢气气体响应在23.3以下，有很好的选择性；对20ppm乙醇的气体响应达19.5，对低浓度乙醇气体有很高的气体响应。
摘要（英）：

The invention belongs to the technical field of gas sensor production, and provides an Au and Cl co-modified LaFeO3-based ethanol gas sensor and a production method thereof. The method comprises the following steps: adding an aqueous HAuCl4 solution with the mass fraction being 1% into a LaFeO3 solution according to a mass ratio of the aqueous HAuCl4 solution to the LaFeO3 solution of 1:100, preparing Au and Cl co-modified LaFeO3 nano-powder through a sol-gel technology, and producing an indirectly-heated ceramic tube structure gas sensor element. The best working temperature of the produced gas sensor element to ethanol is 128 DEG C; the gas response to 100 ppm of ethanol at the best working temperature is 47.7, and has no much change 96 h later, so the gas sensor element has a good stability; the response to 100 ppm of DMF, dichloromethane, n-hexane, carbon dioxide, and hydrogen gases is 23.3 or less, and has a good selectivity; the gas response to 20 ppm of ethanol is 19.5, and thegas sensor element has a very high gas response to a low-concentration ethanol gas.

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