基于金属有机框架衍生的CuO纳米花室温NO_(2)气体传感器  

Room-temperature NO_(2) Gas Sensor Based on Metal-organic Framework-derived CuO Nanoflowers

作　　者：尹晋宏 YIN Jin-hong(Lvliang University,Shanxi Lvliang 033000,China)

机构地区：[1]吕梁学院,山西吕梁033000

出　　处：《广州化工》2024年第18期151-153,169,共4页GuangZhou Chemical Industry

摘　　要：二氧化氮(NO_(2))是大气中存在的严重污染气体,空气中NO_(2)浓度的过高不管对生态环境和人体健康都具有不可逆的危害,因此快速准确的探测NO_(2)气体对环境保护和人类的生产生活都有重要意义。金属有机框架(MOFs)具有大比表面积和高表面活性,且MOF可经过高温煅烧掉可衍生出同样具有大比表面积和表面丰富活性位点的氧化物,是当前气体传感领域理想的气敏单元候选。采用一步简单实用的低温水热方法并通过后续的热退火过程制备出了CuO纳米花室温NO_(2)气体传感器,并通过结构和形貌表征证明了传感器的大比表面积特性,气敏实验证明了传感器在室温下具有快速的响应恢复速度和检测准确性,是实现室温NO_(2)气体浓度探测的理想装置。Nitrogen dioxide(NO_(2))is a serious pollutant gas in the atmosphere,and the high concentration of NO_(2) in the air is irreversibly harmful to the ecological environment and human health,so the rapid and accurate detection of NO_(2) gas is of great significance to the environmental protection and the production and life of human beings.Metal-organic frameworks(MOFs)with large specific surface area and high surface activity,and MOFs can be calcined off at high temperature to derive oxides with the same large specific surface area and rich active sites on the surface,which is an ideal gas-sensitive unit candidate in the field of gas sensing.A CuO nanoflower room-temperature NO_(2) gas sensor was prepared by a simple and practical low-temperature hydrothermal method and subsequent thermal annealing process,and the large specific surface area of the sensor was demonstrated by structural and morphological characterization,and the gas-sensitive experiments proved that the sensor had a fast response recovery and detection accuracy at room temperature,which made it an ideal device for detecting the concentration of room-temperature NO_(2) gas.

关 键 词：NO_(2) CUO 气体传感器 快响应 室温传感 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]