摘要
采用水热法成功实现掺杂1%Ag、1%Fe、1%Al、1%Ce、1%Ni、1%Pb的纳米Zn O粉体的制备,通过X射线衍射(XRD)、扫描电镜(SEM)等表征方法,系统分析掺杂元素种类对纳米Zn O材料的结构、形貌及气敏性能的影响。结果表明:掺杂1%Ag、1%Fe、1%Ce、1%Ni的纳米Zn O的结晶度降低;掺杂1%Al和1%Pb的纳米Zn O的结晶度变化较小;未掺杂的纳米Zn O为片状结构;掺杂1%Ag和1%Al的纳米Zn O的形貌为颗粒状结构;掺杂1%Fe、1%Ni和Pb纳米Zn O的材料为六方短柱状;但掺杂1%Ce的Zn O纳米材料与未掺杂Zn O材料相同,具有片状结构。掺杂1%Ag的纳米Zn O对C2H5OH气体的灵敏度最好,对C2H5OH气体和NH3气体有良好的选择性,对C2H5OH气体有较短响应恢复时间和良好的稳定性。
Nano-ZnO powders with dopant（1% Ag,1% Fe,1% Al,1% Ce,1% Ni,1% Pb）were successfully prepared by hydrothermal method. The influences of these doping elements on the structure,morphology and gas-sensing properties of nanoZnO were investigated by X-ray diffraction（XRD）and scanning electron microscopy（SEM）. The results show that the crystallinity of nano-ZnO doped with 1%Ag,1%Fe,1%Ce and 1%Ni decreases,but nano-ZnO doped with 1%Al,1%Pb has little change. The pure nano-ZnO and the nano-ZnO doped with 1%Ce are a flake-like structure,the nano-ZnO doped with 1%Ag and 1%Al is granular structure,the nano-ZnO doped with 1%Fe,1%Ni and 1%Pb is hexagonal columna structure. The nanoZnO doped with 1%Ag shows high sensitivity to C2 H5 OH,high selectivity to C2 H5 OH and NH3,and also has a short responserecovery time,and good stability to C2 H5 OH.
作者
王箫扬
张富春
张雄
刘斌
董宇欣
WANG Xiaoyang;ZHANG Fuchun;ZHANG Xiong;LIU Bin;DONG Yuxin(College of Physics ＆ Electronic Information,Yah＇an University,Yah＇an 716000,China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2018年第4期63-67,共5页
Ordnance Material Science and Engineering
基金
国家自然科学基金(61664008)
陕西省高水平大学学科建设项目(2015SXTS02)
科技创新团队资助项目(2017CXTD-01)
延安大学2017年科研计划项目(YDQ2017-11
2017cxy05)
延安大学引导项目(YD2016-02)
关键词
水热法
氧化锌
掺杂
灵敏度
选择性
稳定性
hydrothermal method
ZnO
doped
sensitivity
selectivity
stability
