Mesoporous ZnO@CO3O4 nanosphere for sensitive detection of 3-hydroxy-2-butanone
Mesoporous ZnO@CO3O4 nanosphere for sensitive detection of 3-hydroxy-2-butanone
复制标题
DOI：
10.1016/j.jpap.2022.100135
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Jingxuan Qiu
中科院分区：
文献类型：
--
作者：
Xinxin Tian;Ming Yin;Li Zhang;Tianyi Qiu;Dongpo Xu;Jingxuan Qiu
It is important to detect foodborne pathogens in food and water, such as Listeria monocytogenes (L. monocytrogenes ), which can cause foodborne illness in people with compromised immune systems. Volatile organic compounds (VOC) and 3‑hydroxy-2-butanone (3H-2B) produced by L. monocytrogenes can be used as biomarkers for indirect detection of microbial contamination. In this study, the mesoporous ZnO@CO3O4 nanosphere was prepared through the simple hydrothermal synthesis method of ZIF- l -Zn@Co, the cage construction of mesoporous ZnO@CO3O4 nanosphere was remained unchanged after the calcination of the ZIF- l -Zn@Co at 600 °C for 2 h in air. The mesoporous ZnO@CO3O4 nanosphere was selected as the gas sensor showed the strongest response to 3H-2B, and 7–12 times higher than the response of other test gases. In addition, compared with ZnO and Co 3 O 4 single metal oxide gas sensor, the ZnO@CO3O4 sensor possessed better repeatability and stability after repeated repeatability tests under the same conditions.
