Ce掺杂NiO纳米材料的制备及其气敏性能研究  

Preparation and gas sensing property of Ce-doped NiO nanomaterial

作　　者：张敏[1] 李晓丹[2] 毛永强[1,3] 李娜[3] 

机构地区：[1]矿山热动力灾害与防治教育部重点实验室,辽宁工程技术大学安全科学与工程学院,阜新123000 [2]辽宁工程技术大学矿业学院,阜新123000 [3]辽宁工程技术大学理学院,阜新123000

出　　处：《化工新型材料》2018年第1期233-236,共4页New Chemical Materials

基　　金：国家自然科学基金(51574143); 辽宁省教育厅项目(L2013139); 辽宁省自然科学基金(201602358)

摘　　要：以硫酸镍、硝酸铈和氢氧化钠为原料,聚乙烯吡咯烷酮(PVP)为表面活性剂,先通过化学沉淀反应,再经过高温煅烧得到Ce掺杂NiO纳米材料,并利用X射线衍射仪(XRD)和透射电子显微镜(TEM)对所得材料进行表征与分析。将所得Ce掺杂NiO纳米材料制成气敏元件,测试其对乙醇气体的敏感性能。结果表明:当Ce掺杂量为3%(质量分数)时,NiO纳米材料对乙醇气体具有较好的气敏响应性能;在工作温度为300℃时,该Ce掺杂NiO纳米材料对5×10^(-6)乙醇的灵敏度可达到2.20,响应时间小于20s。Using NiSO_4·6 H_2O,Ce（NO_3）_3·6 H_2O and NaOH as primary materials and PVP as a surfactant,Cedoped NiO nanomaterial was successfully synthesized through chemical deposition reaction combined with subsequent calcination process.The structure and morphology of as-synthesized samples were characterized by X-ray diffraction（XRD）and transmission electron microscopy（TEM）.To demonstrate the usage of Ce-doped NiO nanomaterial,gas sensor was fabricated and investigated for ethanol detection.The results showed that 3% Ce-doped NiO nanomaterials exhibited good gas sensing properties to ethanol.When the sensor based on 3% Ce-doped NiO nanomaterials was exposed to 5×10^（-6） ethanol,the sensitivity can reach to 2.20 at 250℃ ,and the response time was less than 20 s.

关 键 词：化学沉淀法 Ce掺杂NiO 乙醇 气敏性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]