Yi Shuangshuang, Chen Cunguang, Yu Meiling, Hao Juanjuan, Wang You
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China.
Front Chem. 2024 Jul 26;12:1425693. doi: 10.3389/fchem.2024.1425693. eCollection 2024.
Heterostructure engineering is crucial for enhancing gas sensing performance. However, achieving rapid response for room-temperature NO sensing through rational heterostructure design remains a challenge. In this study, a BiSe/SnSe 2D/2D heterostructure was synthesized by hydrothermal method for the rapid detection of NO at room temperature. By combining BiSe nanosheets with SnSe nanosheets, the BiSe/SnSe sensor demonstrated and the lowest detection limit for NO a short response time (15 s) to 10 ppm NO at room temperature, reaches 25 ppb. Furthermore the sensor demonstrates significantly larger response to NO than to other interfering gases, including 10 ppm NO, HS, NH, CH, CO, and SO,demonstrating its outstanding selectivity. And we discuss the mechanism of related performance enhancement.
异质结构工程对于提高气敏性能至关重要。然而，通过合理的异质结构设计实现室温下对NO传感的快速响应仍然是一个挑战。在本研究中，采用水热法合成了BiSe/SnSe二维/二维异质结构，用于室温下NO的快速检测。通过将BiSe纳米片与SnSe纳米片相结合，BiSe/SnSe传感器在室温下对10 ppm NO表现出短响应时间（15秒），最低检测限达到25 ppb。此外，该传感器对NO的响应明显大于对其他干扰气体的响应，包括10 ppm的H₂S、NH₃、CH₄、CO和SO₂，表明其具有出色的选择性。并且我们讨论了相关性能增强的机制。
