Indexed by:
期刊论文
First Author:
Tang, Wei
Correspondence Author:
Wang, J (reprint author), Dalian Univ Technol, Sch Elect Sci & Technol, Dalian 116023, Peoples R China.
Co-author:
Wang, Jing,Yao, Pengjun,Li, Xiaogan
Date of Publication:
2014-03-01
Journal:
SENSORS AND ACTUATORS B-CHEMICAL
Included Journals:
SCIE、EI、Scopus
Document Type:
J
Volume:
192
Page Number:
543-549
ISSN No.:
0925-4005
Key Words:
SnO2-ZnO composite nanofibers; Electrospinning; Hierarchical; Methanol
sensing
Abstract:
SnO2-ZnO composite nanofibers were synthesized by an electrospinning method in this study. The structural composition and morphology were characterized by X-ray diffraction, scanning electron microscopy and N-2 physical adsorption. The results indicated that hollow hierarchical SnO2-ZnO composite nanofibers having mesopore structure formed after sintering at 600 degrees C for 3 h. The gas sensor prepared by the SnO2-ZnO composite nanofibers exhibited good selectivity to methanol in the presence of ethanol, acetone, formaldehyde, ammonia, toluene and benzene at the optimum operating temperature of 350 degrees C. The response and recovery time to 10 ppm methanol were about 20 s and 40 s, respectively. The growth mechanism of the hollow hierarchical nanofibers was discussed, as well as the methanol adsorption-desorption mechanism. (C) 2013 Elsevier B.V. All rights reserved.
Translation or Not:
no
