文献类型：期刊文章

作　　者：李酽[1] 刘敏[1]

机构地区：[1]中国民航大学理学院航空化学研究所,天津300300

出　　处：《Transactions of Nonferrous Metals Society of China》

基　　金：Project(61079010)supported by the National Natural Science Foundation of China;Project(3122013P001)supported by the Significant Pre-research Funds of Civil Aviation University of China;Project(MHRD20140209)supported by the Science and Technology Innovation Guide Funds of Civil Aviation Administration of China

年　　份：2015

卷　　号：25

期　　号：7

起止页码：2247-2252

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EBSCO、EI、IC、INSPEC、JST、SCI(收录号：WOS:000359325300018)、SCI-EXPANDED(收录号：WOS:000359325300018)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：ZnO nanosheets doped with yttrium（Y） were synthesized via a solution combustion method using zinc nitrate and tartaric acid as raw materials.The scanning electron microscopy and X-ray powder diffraction were used to characterize ZnO nanosheets and the gas sensing properties of them were investigated.The results show that the as-synthesized ZnO nanosheets with diameters of20-100 nm have a wurtzite structure with rough surface.The sensor made from the 2%Y-doped ZnO nanosheets exhibits a stronger response toward 100x10-6（volume fraction） ethanol,its sensitivity at 300℃ is 17.50,and its optimal operating temperature（300℃）is lower than that of the pure ZnO（330℃）.The obvious sensitivity（about 2.5） can be observed at the volume fraction of ethanol as low as 5×10-（-6）,while its the response time is only 2s at 300℃.Moreover,the Y-doped ZnO sensor has a better selectivity to ethanol than other gases.

关 键 词：ZNO ETHANOL Y-doping  combustion method  gas sensitivity  

分 类 号：TB383.1[材料类] O614.241]