發(fā)布時間：2018-04-08 21:06

  本文選題：靜電紡絲法　切入點：ZnO納米纖維　出處：《鄭州大學學報(工學版)》2016年02期

【摘要】：為改善Zn O對丙酮的氣敏響應,采用靜電紡絲法,利用PVP/Zn(NO_3)·6H_2O/Y(NO_3)_3·6H_2O等制成的前驅液,制備了釔摻雜的Zn O納米纖維,通過XRD、SEM等表征手段對制備的純Zn O和摻雜的Zn O樣品進行了表征分析.將制備的純Zn O和釔摻雜的Zn O納米纖維制成電阻型氣體傳感器.氣敏測試結果表明,Y摻雜有效改善了Zn O納米纖維對丙酮氣體的敏感特性.在440℃時,對1×10~(-6)~200×10~(-6)(體積分數)丙酮具有良好的響應,響應時間為14~40 s,恢復時間為20~55 s,對于100×10~(-6)丙酮的響應值約為70(S=Ra/Rg),并且對于乙醇、氨氣、甲醇、甲醛、甲苯、苯有較好的選擇性.同時分析了該材料對丙酮的敏感機理.
[Abstract]:In order to improve the gas sensing response of Zno to acetone, yttrium doped ZnO nanofibers were prepared by electrospinning method and precursor solution of PVP / ZnNo3 6H_2O/Y(NO_3)_3 6H_2O.The pure and doped Zno samples were characterized by XRD SEM.A resistive gas sensor was prepared from pure Zn O and Y doped ZnO nanofibers.The gas sensitivity test results show that Y doping can effectively improve the sensitivity of Zno nanofibers to acetone gas.At 440 鈩，

本文編號：1723337