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Silver Decorated Carbon Nanospheres as Effective Visible Light Photocatalyst

Published online by Cambridge University Press:  10 April 2013

W. Armstrong ,
B. Sapkota  and
S. R. Mishra
W. Armstrong
Affiliation:
The Department of Physics, The University of Memphis, Memphis, TN 38152
B. Sapkota
Affiliation:
The Department of Physics, The University of Memphis, Memphis, TN 38152
S. R. Mishra
Affiliation:
The Department of Physics, The University of Memphis, Memphis, TN 38152
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Abstract

The objective of this study was to assess usability of silver nanoparticles loaded on amorphous carbon (Ag-C) hollow nanospheres for the removal of Methylene Blue (MB) molecules from aqueous solutions. Using microwave technique, silver nanoparticles of different weight ratio was deposited onto amorphous carbon templates. The carbon hollow spheres were derived from glucose using hydrothermal technique. Interestingly crystallite size of Ag decreased with the silver loading on carbon nanospheres. Using UV-vis spectroscopy, the kinetics of MB removal from the solution was assessed. The degradation of MB followed pseudo-first-order kinetics. The obtained results showed that Ag-C particles are efficient MB degradation agent with the rate constant as high as 0.19 m-1 under visible light and 0.041 m -1 under UV light. Thus Ag-C particles are good alternative as low-cost scavenger of dye molecules in wastewater treatments.

Keywords

catalyticcompositehydrothermal
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1509: Symposium CC – Optically Active Nanostructures , 2013 , mrsf12-1509-cc09-38
Copyright
Copyright © Materials Research Society 2013

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