期刊
CHEMICAL PHYSICS LETTERS
卷 727, 期 -, 页码 19-24出版社
ELSEVIER
DOI: 10.1016/j.cplett.2019.04.043
关键词
V2O5/CuO; p-n junctions; Electrospinning; Acetone sensor; Sensitivity
资金
- National Natural Science Foundation of China [21473093]
- Fundamental Research Funds for the Central Universities, Nankai University [63191745]
- Tianjin Research Program of Application Foundation and Advanced Technology [14JCYBJC41300]
Novel hollow structure based on CuO modified V2O5 nano-string of pearls (V2O5/CuO NSPs) were synthesized via electrospinning technique. The achieved V2O5/CuO NSPs exhibit interesting shapes of string of pearls, endowed with transparent and hollow structure under TEM observation. The V2O5/CuO NSPs sensors demonstrated that the sensitivity (R-a/R-g = 8.8 at 500 ppm) towards acetone was 3.2 times as high as that of pristine V2O5 nanofibers (NFs) (R-a/R-g = 2.5 at 500 ppm) at 440 degrees C. The improved sensitivity may be ascribed to the formation of V2O5/CuO p-n heterojunctions at the interfaces, which elevates the barrier height and enlarges depleted electron region.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据