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Glass fiber–supported NiO nanofiber webs for reduction of CO and hydrocarbon emissions from diesel engine exhaust

Published online by Cambridge University Press:  12 September 2014

Gibin George  and
Srinivasan Anandhan Open the ORCID record for Srinivasan Anandhan [Opens in a new window]
Gibin George
Affiliation:
Department of Metallurgical and Materials Engineering, National Institute of Technology-Karnataka, Mangalore 575025, India
Srinivasan Anandhan*
Affiliation:
Department of Metallurgical and Materials Engineering, National Institute of Technology-Karnataka, Mangalore 575025, India
*
a) Address all correspondence to this author. e-mail: anandtmg@gmail.com, anandhan@nitk.edu.in
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Abstract

In this study, nickel acetate tetrahydrate (NACTH)/poly(styrene-co-acrylonitrile) (SAN) sol was used for the fabrication of nanocrystalline NiO nanofibers. An indigenous setup was developed to use these nanofibers for the oxidation of carbon monoxide (CO) and unburnt hydrocarbons (HC) from diesel engine exhaust. The morphological, compositional, and crystalline properties of the NiO nanofibers obtained after calcination were studied by scanning electron microscopy, Fourier transform infrared (FTIR) spectroscopy, and x-ray diffraction (XRD). Clear evidence of defects in the fibers was observed in ultraviolet–visible–near infrared (UV-Vis-NIR) spectra, Raman spectra, and magnetic property measurements. The NiO nanofiber mats supported by glass fiber mats were efficient in oxidizing CO and HC from diesel engine exhaust, and the maximum efficiency was achieved by using NiO nanofibers with the maximum amount of defects.

Keywords

sol–gelceramicnanostructure

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Type
Articles
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Journal of Materials Research , Volume 29 , Issue 20 , 28 October 2014 , pp. 2451 - 2465
Copyright
Copyright © Materials Research Society 2014 

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