A low-temperature, highly sensitive H₂S sensor based on Au-doped ZnO/Zn₂SnO₄ (AZZ) hierarchical structured composites was fabricated by using a screen printing craft. With the introduction of Au, the response of the AZZ-based sensor to H₂S is improved from 2.1 to 15.92 at 150 °C for a [Au]/[Zn] molar ratio of 0.1%. Moreover, the as-prepared sensor has better selectivity to H₂S. It is worth mentioning that the sensor shows a commendable ultra-fast recovery time (2 s). Importantly, the unique AZZ hierarchical structure is conducive to chemical adsorption, surfaces and interfaces reactions, gas diffusion and transmission, thereby enhancing the sensing performance.

通过使用丝网印刷工艺，制造了一种基于Au掺杂的ZnO / Zn ₂ SnO ₄（AZZ）分层结构化复合材料的低温，高灵敏度H ₂ S传感器。随着Au的引入，对于[Au] / [Zn]摩尔比为0.1％的情况，基于AZZ的传感器对H ₂ S的响应在150°C时从2.1提高到15.92。而且，所制备的传感器对H ₂ S具有更好的选择性。值得一提的是，该传感器显示出值得称赞的超快恢复时间（2 s）。重要的是，独特的AZZ分层结构有利于化学吸附，表面和界面反应，气体扩散和传输，从而增强了传感性能。