Sn基金属有机框架衍生物的合成及气敏性能研究  

Synthesis and gas-sensitizing properties of Sn-based metal-organic framework derivatives

作　　者：张士勇 赵振龙 贾丽华[1] ZHANG Shi-yong;ZHAO Zhen-long;JIA Li-hua(College of Chemistry and Chemical Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报(自然科学版)》2025年第1期77-80,共4页Journal of Qiqihar University(Natural Science Edition)

摘　　要：以结晶四氯化锡为锡源,对苯二甲酸为有机配体,壳聚糖为结构导向剂,通过溶剂热法和煅烧法制备SnO_(2)纳米材料。利用X射线衍射、物理吸附仪以及气敏测试系统对SnO_(2)纳米材料进行表征和性能测试。结果显示,Sn-MOF-P(0.05)-550传感器相比于Sn-MOF-550传感器,对二氧化氮气体具有更高的气敏传感性能,在120℃工作温度下,Sn-MOF-P(0.05)-550传感器对二氧化氮气体的响应值达到670,是Sn-MOF-550传感器的1.2倍。结果表明,加入适量的壳聚糖可以提高材料的比表面积,增加活性位点数量,有利于提高材料的吸附、表面反应和扩散能力,从而提高传感器的性能。SnO_(2) nanomaterials were synthesized by solvothermal synthesis method and calcined method using crystalline tin tetrachloride as a tin source,terephthalic acid as an organic ligand and chitosan as a structure-directing agent.X-ray diffraction,physical adsorption instrument and gas sensitive testing system were used to characterize and test the properties of SnO_(2) nanomaterials.The results showed that the sensor has higher gas-sensitive sensing performance for NO_(2) gas compared with that of the sensor without added structural guiding agent.The response value of NO_(2) gas reaches 670 at an operating temperature of 120℃which is 1.2 times of that of the sensor without added guiding agent.The results showed that the addition of an appropriate amount of chitosan provides a rich number of active sites,which was more conducive to the improvement of the material's adsorption,surface reaction,and diffusion capabilities,thus improve the performance of the sensor.

关 键 词：SnO_(2) 金属有机框架 NO_(2) 传感器 

分 类 号：TB383[一般工业技术—材料科学与工程]