In order to enhance the gas sensing performance of SnO-based sensor, different content of 1,3,5-benzenetricarboxylic acid (BTC) and stannous sulfate with molar ratio 0.5:1, 1.5:1, 2:1 were used to prepare the metal–organic frameworks (MOFs), Sn-BTC, by solvothermal method, and then calcined at 500 °C for 3 h to obtain SnO derived from MOF structure. The results showed that SnO-1.5 had the best gas sensing performance at the optimal operating temperature of 160 °C, the response value to 100 ppm ethylene glycol was 64.69 and the response/recovery time was 13/3 s, respectively. Meanwhile, in order to further improve the sensitivity, different content of cerium nitrate hexahydrate (0.25, 0.75, 1.25 mol%) were used to prepare Ce doped Sn-BTC-1.5 and then the derived SnO doped with Ce was obtained by calcination. The SnO-Ce-0.75 sensor was tested to have a maximum response value of 132.90 at 160 °C and a response/recovery time of 165/7 s.

中文翻译：

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Ce掺杂和MOF衍生结构对SnO2对乙二醇气敏性能的影响

为了增强SnO基传感器的气敏性能，采用不同含量的1,3,5-苯三甲酸(BTC)和硫酸亚锡以摩尔比0.5:1、1.5:1、2:1制备了SnO基传感器的气敏性能。采用溶剂热法制备金属有机框架（MOF）Sn-BTC，然后在500℃下煅烧3小时，得到MOF结构衍生的SnO。结果表明，SnO-1.5在最佳工作温度160℃下具有最佳的气敏性能，对100ppm乙二醇的响应值为64.69，响应/恢复时间为13/3s。同时，为了进一步提高灵敏度，采用不同含量的六水硝酸铈（0.25、0.75、1.25 mol%）制备Ce掺杂Sn-BTC-1.5，然后通过煅烧得到衍生的Ce掺杂SnO。SnO-Ce-0.75传感器经测试在160℃时的最大响应值为132.90，响应/恢复时间为165/7 s。