Abstract In this study, we comprehensively present the gas sensing performance of strontium (Sr)-doped barium titanate (BaTiO3) nanostructures which are synthesized by a low-temperature hydrothermal route. The in-situ doping of strontium in BaTiO3 nanostructures is achieved with different molar concentrations of Sr, and the sensing performance was evaluated by screen printing process of products to form their thick films. The thick films of as-prepared Sr-doped BaTiO3 (BaSrTiO3) were investigated for gas sensing performance for various gases at different operating temperatures where strong response was observed for both nitrogen dioxide (NO2) and ammonia (NH3) gases at room temperature. Furthermore, the sensing response at room temperature for NH3 and NO2 gases was also studied with respect to Sr doping concentrations in BaTiO3 nanostructures.

中文翻译：

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BaTiO3 纳米结构中锶掺杂浓度的优化用于室温 NH3 和 NO2 气体传感

摘要 在本研究中，我们全面展示了通过低温水热法合成的掺锶 (Sr) 钛酸钡 (BaTiO3) 纳米结构的气敏性能。锶在BaTiO3纳米结构中的原位掺杂是通过不同摩尔浓度的Sr实现的，并通过丝网印刷工艺评估产品的传感性能以形成它们的厚膜。研究了制备的 Sr 掺杂 BaTiO3 (BaSrTiO3) 厚膜在不同工作温度下对各种气体的气敏性能，其中在室温下观察到二氧化氮 (NO2) 和氨 (NH3) 气体的强烈响应。此外，还研究了室温下 NH3 和 NO2 气体的传感响应与 BaTiO3 纳米结构中的 Sr 掺杂浓度。