NDLI: Electrochemical and Spectroscopic Properties of Fly Ash

Content Provider	Springer Nature Link
Author	Iwuoha, Emmanuel I. Mavundla, Sipho E. Somerset, Vern S. Petrik, Leslie F. Klink, Michael J. Sekota, Mantoa Bakers, Priscilla
Copyright Year	2006
Abstract	Polyaniline (PANI) nanocomposites were prepared with fly ash (FA) either by aging the starting materials (aniline and FA) before oxidative polymerisation or by including poly(styrene sulphonic acid) (PSSA) eliminating the aging step. The aging procedure formed polymer nanotubes that have cross-sectional diameters of 50–110 nm. The procedure involving PSSA produced nanorods and nanofibres composites that have diameters of 100–500 nm and length of up to 10 µm attributed to the presence of metal oxides and silica in FA. The electrochemical analysis of the PANI–PSSA–FA nanorod composites shows three redox couples with formal potentials, $\rm {E}{^{0'}}_{(200\,{\rm mV}\,{\rm s}^{-1})}$ , values of 105 mV, 455 mV and 670 mV, and conductance, C, value of 1.21 × 10−2 S. The UV-Vis spectroscopy of the polymeric nanorod shows absorption maxima at 340 and 370 nm (due to π–π* transition of the benzoid rings), and 600–650 nm (due to charge transfer excitons of the quinoid structure), which are characteristic of emeraldine base.
Starting Page	453
Ending Page	458
Page Count	6
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	155
Issue Number	3-4
e-ISSN	14365073
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-06-23
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analytical Chemistry Inorganic Chemistry Physical Chemistry Characterization and Evaluation Materials Monitoring/Environmental Analysis/Environmental Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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