Ce掺杂In_2O_3纳米纤维的制备及其三乙胺气敏性能(英文)  

Preparation and Triethylamine Sensing Properties of Ce-Doped In_2O_3 Nanofibers

作　　者：王金兴[1,2] 于连香[1] 王浩铭[3] 阮圣平[3] 李佳静[1] 吴凤清[1] 

机构地区：[1]吉林大学化学学院,长春130012 [2]长春汽车材料研究所,长春130011 [3]吉林大学电子科学与上程学院,长春130021

出　　处：《物理化学学报》2010年第11期3101-3105,共5页Acta Physico-Chimica Sinica

基　　金：supported by the National Natural Science Foundation of China(60374048,60977031);Jilin Provincial Science and Technology Department(20060928,20080330);Seed Foundations of Jilin University,China(2006-2008);National High-Tech Research and Development Program of China(863)(2009AA032402);Doctoral Found of Ministry of Education of China(20090061110040)~~

摘　　要：用简单有效的静电纺丝法制备了Ce掺杂的In2O3纳米纤维材料.采用X射线衍射(XRD)、透射电子显微镜(TEM)、高分辨率透射电子显微镜(HRTEM)和扫描电子显微镜(SEM)对合成样品的晶体结构和形貌进行了表征.结果显示,此纤维材料的平均直径约为90nm,长度达到几十个微米.气敏性能测试结果表明,4%(w)Ce掺杂的In2O3纳米纤维对三乙胺的灵敏度最高,该气敏元件对3μL·L-1三乙胺的灵敏度达到2.6,响应时间为5s,恢复时间约为6s,且具有较好的选择性.Ce-doped In2O3 nanofibers were synthesized by a simple and effective electrospinning method. The morphology and crystal structure of the as-prepared samples were characterized by X-ray diffraction （XRD）, transmission electron microscopy （TEM）, high-resolution transmission electron microscopy （HRTEM）, and scanning electron microscopy （SEM）. The results revealed that the length of the nanofibers can reach several tens of micrometers and the average diameter was about 90 nm. The sensor fabricated from the 4% （w） Ce-doped In2O3 nanofibers showed the highest sensitivity to triethylamine. The sensitivity reached 2.6 when the sensor was exposed to 3 μL·L -1 triethylamine and the response time and recovery time were about 5 and 6 s, respectively. Moreover, good selectivity was also observed in our investigation.

关 键 词：静电纺丝法 Ce掺杂In2O3 纳米纤维 三乙胺 气体传感器 

分 类 号：TB383.1[一般工业技术—材料科学与工程]