多孔结构ZnO/SnO_(2)复合物的制备及其甲醇检测性能研究  

Preparation of Porous Structure ZnO/SnO_(2) Composite and Its Methanol Detection Performance

作　　者：王艺憓 鲁雅梅 孔馨初 冯威[3] Wang Yihui;Lu Yamei;Kong Xinchu;Feng Wei(College of Earth Sciences,Jilin University,Jilin,130061;Urban Science Raserch Institute of Changchun City,Jilin,130000;Key Lab of Groundwater Resources and Environment,Ministry of Education,Jilin University,Jilin,130021)

机构地区：[1]吉林大学地球科学学院,吉林130061 [2]长春市城市科学研究所,吉林130000 [3]吉林大学地下水资源与环境教育部重点实验室,吉林130021

出　　处：《当代化工研究》2021年第12期31-33,共3页Modern Chemical Research

基　　金：国家自然科学基金(No.61774073)。

摘　　要：利用甘蔗渣作为生物模板合成出一种新颖的多孔生物形态的ZnO/SnO_(2)复合材料.利用X射线衍射(XRD)和透射电子显微镜(TEM)对ZnO/SnO_(2)复合材料的结构特征进行了研究.结果表明,所制备的ZnO/SnO_(2)复合材料保留了甘蔗渣材料的原始孔形态,并且与纯SnO_(2)相比,ZnO/SnO_(2)具有更高的甲醇检测性能.SnO_(2)/ZnO复合材料在340℃工作温度下对100ppm甲醇的响应值37.同时,该复合材料还具有良好的甲醇检测的气体选择性和稳定性,这主要归因于复合材料的多孔结构以及SnO_(2)和ZnO组分之间形成n-n异质结.Using bagasse as a biological template,a novel multilayer porous biological ZnO/SnO_(2) composite material was synthesized.Using X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM)and X-ray photoelectron spectroscopy(XPS),the structural characteristics of the ZnO/SnO_(2) n-n heterostructure were studied.The results show that the prepared ZnO/SnO_(2) composite material retains the original pore morphology of the bagasse material,and compared with pure SnO_(2),ZnO/SnO_(2)has higher sensing performance.In particular,when ZnO:SnO_(2) it shows an excellent response value of 37 at 340℃ under 100ppm methanol.Because ZnO has the advantages of low resistance,high n-type concentration,high hole mobility,and low lattice mismatch with SnO_(2) it is beneficial to form n-n heterojunction with SnO_(2) At the same time,the ZnO/SnO_(2) composite material has good gas selectivity and stability to methanol,which is mainly due to the formation of n-n bonds between SnO_(2) and ZnO and strong absorption capacity.

关 键 词：ZnO/SnO_(2) 甘蔗渣 生物模板 气敏 甲醇 

分 类 号：TQ423.2[化学工程]