Yang Weiye, Ou Quanhong, Yan Xueqian, Liu Lei, Liu Shaoyu, Chen Huohuo, Liu Yingkai
Yunnan Key Laboratory of Opto-Electronic Information Technology, Yunnan Normal University, Kunming, 650500, China.
Institute of Physics and Electronic Information, Yunnan Normal University, Kunming, 650500, China.
Nanoscale Res Lett. 2022 Sep 2;17(1):82. doi: 10.1186/s11671-022-03721-4.
For real-application gas sensors, high performances (response, selectivity, response/recovery time and stability) are demanded. An effective strategy is applying nanomaterials in gas sensors. In this study, the anatase TiO flower-like nanomaterials (FLNMs) are prepared through a one-step hydrothermal method which exhibit high-performance toward acetone vapor. TiO FLNMs sensors property are characterized at optimal working temperature of 330 °C with selectivity (acetone), response (S = 33.72 toward 250 ppm acetone), linear dependence (R = 0.9913), response/recovery time (46/24 s toward 250 ppm acetone) and long-term stability (30 days). These demonstrate that TiO FLNMs get a high performance for acetone sensor. Moreover, the limit of detection of acetone is 0.65 ppm which is lower than that of exhaled air for diabetes (0.8 ppm), indicating that TiO FLNMs gas sensor gets potential application in medical diagnosis.
对于实际应用的气体传感器，需要高性能（响应、选择性、响应/恢复时间和稳定性）。一种有效的策略是在气体传感器中应用纳米材料。在本研究中，通过一步水热法制备了锐钛矿型TiO花状纳米材料（FLNMs），其对丙酮蒸汽表现出高性能。TiO FLNMs传感器性能在330°C的最佳工作温度下进行表征，具有选择性（对丙酮）、响应（对250 ppm丙酮的S = 33.72）、线性相关性（R = 0.9913）、响应/恢复时间（对250 ppm丙酮为46/24 s）和长期稳定性（30天）。这些表明TiO FLNMs在丙酮传感器方面具有高性能。此外，丙酮的检测限为0.65 ppm，低于糖尿病呼出气体的检测限（0.
