溶胶水热法制备纳米SnO_2气敏材料的研究  

Synthesis and testing of gas-sensing property of SnO_2 prepared through hydrothermal method

作　　者：石娟[1] 

机构地区：[1]天津工业大学材料科学与化学工程学院,天津300160

出　　处：《天津工业大学学报》2004年第3期39-41,共3页Journal of Tiangong University

摘　　要：利用溶胶水热法制备出纳米SnO2,对其进行了XRD、TEM、TG DTA、FT IR等表征;通过研究其粉体IR光谱的Sn O振动,发现纳米SnO2随着粒径的减小存在明显的红移现象,并对水热制备SnO2产物进行气敏性分析,结果表明:水热SnO2与传统沉淀法制备SnO2产物相比具有对酒精灵敏度高,响应与恢复时间短的特点,适合于用作气敏材料.Nanosized SnO_2 powders were synthesized using hydrothermal method. The specimens were characterized by TEM, XRD, TG-DTA and FT-IR. FT-IR spectra reveales that the absorption of Sn-O is red-shifted and broadened with the decrease of particle size. Further gas sensing experiments testify that the response and recovery times to C_2H_5OH are shorter than the conventional precipitation method and this product is fit to be used as gas sensing materials.

关 键 词：溶胶水热法 SNO2 气敏 

分 类 号：O611.62[理学—无机化学] TB383[理学—化学]