Effect of Mn substitution on acetone and ammonia sensing in CoFe2O4 nanoparticles

Author

Sarkar, Sourav ; Bhatnagar, M.C.

Author_Institution

Dept. of Phys., Indian Inst. of Technol. Delhi, New Delhi, India

fYear

2015

fDate

7-10 March 2015

Firstpage

253

Lastpage

256

Abstract

Mn has substituted part of Fe in cobalt ferrite (CoFe₂O₄) and resultant material has been abbreviated as CFMO (CoFe_1.7Mn_0.3O₄). Chemical co-precipitation route has been followed for synthesis. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDX), I-V measurement were performed for sample characterization. The influence of Mn substitution was seen in lowering the operating temperature for both acetone and ammonia gas sensing with high response as well as very fast response and recovery timealong with temperature dependent selectivity.

Keywords

X-ray chemical analysis; X-ray diffraction; cobalt compounds; ferrites; gas sensors; manganese; nanoparticles; organic compounds; scanning electron microscopy; CoFe_1.7Mn_0.3O₄; I-V measurement; X-ray diffraction; acetone sensing; ammonia sensing; chemical coprecipitation; cobalt ferrite; energy dispersive X-ray spectroscopy; gas sensing; nanoparticles; scanning electron microscopy; Ferrites; Gas detectors; Manganese; Temperature; Temperature sensors; X-ray scattering; Ferrite; crystal structure; gas sensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics and Technology of Sensors (ISPTS), 2015 2nd International Symposium on

Conference_Location

Pune

Type

conf

DOI

10.1109/ISPTS.2015.7220123

Filename

7220123