Fabrication and Characterization of Semiconducting ZnO Nanofibers for CO Sensing

作者：Moon Jaehyun^*; Lee Su Jae; Park Jin Ah; Zyung Taehyoung

来源：Electrochemical and Solid-State Letters, 2009, 12(9): K63-K65.

DOI：10.1149/1.3160637

• calcination
• electrospinning
• gas sensors
• II-VI semiconductors
• nanofabrication
• nanofibres
• wide band gap semiconductors
• zinc compounds

We used an electrospinning method to produce ZnO nanofibers for CO sensing. ZnO nanofibers were electrospun from a solution containing poly(4-vinyl phenol) (PVP) and Zn acetate. The calcination process of the ZnO/PVP composite nanofibers brought forth polycrystalline wurtzite ZnO nanofibers with diameters of 30-70 nm. Regarding the applications of the ZnO nanofibers, their CO gas-sensing responses were evaluated in a concentration range of 10-25 ppm. The resistances of the ZnO nanofibers were observed to decrease upon exposure to CO. This is attributed to the reducing nature of CO, which reacts with adsorbate O(-) to release an extra electron.

• 出版日期2009