Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (11): 3101-3105.doi: 10.3866/PKU.WHXB20101126

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Preparation and Triethylamine Sensing Properties of Ce-Doped In2O3 Nanofibers

WANG Jin-Xing1,2, YU Lian-Xiang1, WANG Hao-Ming3, RUAN Sheng-Ping3, LI Jia-Jing1, WU Feng-Qing1   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. Changchun Institute of Automobile Materials, Changchun 130011, P. R. China;
    3. College of Electronic Science and Engineering, Jilin University, Changchun 130012, P. R. China
  • Received:2010-05-11 Revised:2010-07-21 Published:2010-10-29
  • Contact: WU Feng-Qing E-mail:fqwu@jlu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (60374048, 60977031), Jilin Provincial Science and Technology Department (20060928, 20080330) and Seed Foundations of Jilin University, China (2006-2008), National High-Tech Research and Development Programof China (863) (2009AA032402), and Doctoral Found of Ministry of Education of China (20090061110040).

Abstract:

Ce-doped In2O3 nanofibers were synthesized by a simple and effective electrospinning method. The morphology and crystal structure of the as-prepared samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and scanning electron microscopy (SEM). The results revealed that the length of the nanofibers can reach several tens of micrometers and the average diameter was about 90 nm. The sensor fabricated from the 4% (w) Ce-doped In2O3 nanofibers showed the highest sensitivity to triethylamine. The sensitivity reached 2.6 when the sensor was exposed to 3 μL·L-1 triethylamine and the response time and recovery time were about 5 and 6 s, respectively. Moreover, good selectivity was also observed in our investigation.

 

Key words: Electrospinning method, Ce-doped In2O3, Nanofibers, Triethylamine, Gas sensor

MSC2000: 

  • O649