Room-temperature ammonia gas sensor based on bismuth oxybromide solid solution material and preparation process

• Main Authors: DENG SONGJIE, HUANG HAIMING, TAN FANGRONG, LIN JIAYI, ZHANG SHAOLIN
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of gas sensors, and particularly relates to a room-temperature ammonia gas sensor based on a bismuth oxybromide solid solution material and a preparation process. The BiOBrxI1-x (x = 0.1, 0.5, 0.9, 1) material is prepared by a coprecipitation method, and an ammonia gas sensor prepared from the material can work at room temperature, so that on one hand, adverse effects caused by high-temperature work of a gas sensitive material are avoided, and the safety of long-term work is improved; and on the other hand, a heat source is not needed during working at room temperature, so that the equipment cost is reduced, even the equipment size is reduced, and the application in daily life is facilitated. In addition, the ammonia gas sensor has higher sensitivity and excellent repeatability and selectivity. In addition, the preparation process of the BiOBrxI1-x (x = 0.1, 0.5, 0.9, 1) material is simple, and large-scale production and application are facilitated. 本发明属于气敏传感器技术领域，