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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing SO2 sensitive material by coating SnO2 with Ag
The invention belongs to the technical field of semiconductor gas sensors and environmental monitoring, provides a method for preparing an SO2 sensitive material by coating SnO2 with Ag, and particularly relates to a method for preparing the SO2 sensitive material by taking tin mud as a raw material to extract SnO2 and performing Ag coating. According to the method, acid pickling, water washing and oxidizing roasting are carried out on the tin mud to extract tin dioxide in the tin mud. Ag nanoparticles are deposited on the surface of stannic oxide serving as a matrix to prepare the sulfur dioxide sensitive material. The prepared SO2 gas sensor shows a very high response value and good stability, selectivity and response recovery characteristics on SO2. The tin dioxide recovery process adopted by the invention is simple, and industrial mass production can be realized. More importantly, the cost of the used raw materials is low, the comprehensive utilization of resources is realized, andthe target of environment-friendly development is met. The prepared sulfur dioxide gas sensor has a wide application prospect in the aspect of sulfur dioxide gas detection.
本发明属于半导体气体传感器与环境监测技术领域，提出一种Ag包覆SnO2制备SO2敏感材料的方法，是一种以锡泥为原料提取SnO2并进行Ag包覆制备SO2敏感材料的方法。本发明对锡泥进行酸洗、水洗及氧化焙烧提取了其中的二氧化锡。并以二氧化锡为基体在其表面沉积Ag纳米颗粒制备了二氧化硫敏感材料。所制备的SO2气体传感器对SO2表现出很高的响应值及良好的稳定性、选择性及响应‑恢复特性。本发明所采用的二氧化锡的回收工艺简单，能够实现工业化大批量生产。更重要的是，所使用的原料成本低，且实现了资源的综合利用，符合环境友好型发展的目标。所制备二氧化硫气体传感器在二氧化硫气体检测方面有广阔的应用前景。
Method for preparing SO2 sensitive material by coating SnO2 with Ag
The invention belongs to the technical field of semiconductor gas sensors and environmental monitoring, provides a method for preparing an SO2 sensitive material by coating SnO2 with Ag, and particularly relates to a method for preparing the SO2 sensitive material by taking tin mud as a raw material to extract SnO2 and performing Ag coating. According to the method, acid pickling, water washing and oxidizing roasting are carried out on the tin mud to extract tin dioxide in the tin mud. Ag nanoparticles are deposited on the surface of stannic oxide serving as a matrix to prepare the sulfur dioxide sensitive material. The prepared SO2 gas sensor shows a very high response value and good stability, selectivity and response recovery characteristics on SO2. The tin dioxide recovery process adopted by the invention is simple, and industrial mass production can be realized. More importantly, the cost of the used raw materials is low, the comprehensive utilization of resources is realized, andthe target of environment-friendly development is met. The prepared sulfur dioxide gas sensor has a wide application prospect in the aspect of sulfur dioxide gas detection.
本发明属于半导体气体传感器与环境监测技术领域，提出一种Ag包覆SnO2制备SO2敏感材料的方法，是一种以锡泥为原料提取SnO2并进行Ag包覆制备SO2敏感材料的方法。本发明对锡泥进行酸洗、水洗及氧化焙烧提取了其中的二氧化锡。并以二氧化锡为基体在其表面沉积Ag纳米颗粒制备了二氧化硫敏感材料。所制备的SO2气体传感器对SO2表现出很高的响应值及良好的稳定性、选择性及响应‑恢复特性。本发明所采用的二氧化锡的回收工艺简单，能够实现工业化大批量生产。更重要的是，所使用的原料成本低，且实现了资源的综合利用，符合环境友好型发展的目标。所制备二氧化硫气体传感器在二氧化硫气体检测方面有广阔的应用前景。
Method for preparing SO2 sensitive material by coating SnO2 with Ag
一种Ag包覆SnO2制备SO2敏感材料的方法
LI JIANZHONG (Autor:in) / XU HAOYUAN (Autor:in) / MEI XIAOMIN (Autor:in) / FU YU (Autor:in) / YIN YUANHONG (Autor:in)
29.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
B22F
Verarbeiten von Metallpulver
,
WORKING METALLIC POWDER
/
C04B
Kalk
,
LIME
/
G01N
Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften
,
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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