论文部分内容阅读
针对水热合成工艺的低成本、无污染的特点,以硝酸锌、六亚甲基四胺和氨水为水热反应体系,研究了新颖形貌的氧化锌纳米梭的制备方法,同时对氧化锌纳米梭的形成过程进行了分析.并将氧化锌纳米梭制成旁热式气敏传感器并利用以Labview系统为核心的气敏数据采集系统对其进行酒精敏感性能测试,测试结果表明氧化锌纳米梭气敏传感器的最优工作温度在380℃左右;在此温度下对同一浓度的4种不同气体测试表明,对乙醇气体的灵敏度高于其他气体;对质量分数为5×10-6的乙醇有40%的灵敏度响应,随气体浓度的增加灵敏度也随之升高,对质量分数为100×10-6的乙醇气体可达85%.
Aiming at the low cost and non-pollution characteristics of hydrothermal synthesis process, zinc nitrate, hexamethylenetetramine and ammonia water were used as hydrothermal reaction system to study the preparation method of zinc oxide nanoshells with novel morphologies. Meanwhile, The formation process of nano-shuttle was analyzed and the zinc oxide nano-shuttle was made as a side-heated gas sensor and its sensitivity was tested by the gas-sensing data acquisition system with Labview system as the core. The test results showed that the nano- The optimal working temperature of the shuttle gas sensor is about 380 ℃. The test of four different gases at the same concentration at this temperature shows that the sensitivity to ethanol gas is higher than that of other gases. The mass fraction of ethanol is 5 × 10-6 With a sensitivity of 40%, the sensitivity increases with the increase of gas concentration, up to 85% for ethanol gas with a mass fraction of 100 × 10-6.