Comparison of the photonic effects of Mn-CNT/TiO2 composites modified by different oxidants View Full Text


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Article Info

DATE

2011-09-29

AUTHORS

Feng Jun Zhang, Won Chun Oh

ABSTRACT

Manganese-carbon nanotubes (CNTs) on titania (TiO2) composites modified by different oxidants (KMnO4, (NH4)2S2O8 and m-chlorperbenzoic acid (MCPBA)) were prepared with a sol-gel method. These composites were comprehensively characterized by the Brunauer-Emett-Teller (BET) method, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy EDX, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-vis absorption spectroscopy. The photoactivity of these materials prepared under visible light irradiation was tested using methylene blue in aqueous solution. The result shown that among the three oxidants, the MCPBA was the best one for the surface functionalization of CNTs and the manganese treated CNT/TiO2 composite can enhance the photocatalytic activity. The proposed mechanism of the photodegradation of methylene blue on Mn-CNT/TiO2 composites was present. More... »

PAGES

678

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s002315841105020x

DOI

http://dx.doi.org/10.1134/s002315841105020x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1037522066


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