氧化锌掺杂铝纳米片的制备及其气敏性能研究  

Preparation and gas sensing properties of Al-doped ZnO nanosheets

作　　者：高晓强[1] 田俊峰[1,2] 桂阳海[2] 蒋登高[1] 

机构地区：[1]郑州大学化工与能源学院,郑州450001 [2]郑州轻工业学院河南省表界面科学重点实验室,郑州450001

出　　处：《化工新型材料》2014年第3期102-104,107,共4页New Chemical Materials

基　　金：国家自然科学基金(21371158);河南省教育厅科学技术研究重点项目(12B430026)

摘　　要：采用水热法,以油酸为形貌控制剂,硝酸铝为铝源,制备了氧化锌掺杂铝纳米片,对其进行了XRD、SEM和EDS表征。考察了制备物对甲醇、乙醇、丙酮、异丙醇、正丁醇、DMF等六种气体的气敏性能,并对其气敏机理进行了简要分析。结果表明,掺杂3%Al的ZnO样品晶粒尺寸变小,为带微孔的层状纳米片,EDS能谱表明样品含有Zn、O和Al元素。样品对正丁醇、丙酮的灵敏度较高,100ppm时分别为164和70,对丙酮的响应和恢复时间分别为7s和29s。Al3＋ doped ZnO nanosheets were prepared by the hydrothermal method, using oleic acid as shape contro- ling agent and Aluminum nitrate as doping source. The products were characterized by XRD, SEM and EDS. The gas sens- ing properties of the products to methanol, ethanol, acetone, isopropanol, n-butanol and DMF were also studied. The gas sensing mechanism was briefly analysised. The results showed that 3% Al doping product had a smaller grain size and a multilayered nanosheet morphology with some porous architectures. EDS spectroscopy showed that the materials contained Zn, O and Al element. The nanomaterials had good response to n-butanol and acetone. The gas sensitivity was nearly up to 164 and 70 to 100ppm n-butanol and acetone, respectively. The response and recovery time for acetone was 7 and 29 s, re- spectively.

关 键 词：纳米片 氧化锌 气敏性能 铝掺杂 

分 类 号：TQ132.41[化学工程—无机化工]