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Projects Database

Plasmon Sensitized TiO2 Nanoparticles as a Novel Photocatalyst for Solar Applications


Project Information

Award Amount:$320,000.00
Dollars Leveraged:$0.00
Start-End Dates:7/1/02-6/30/06
URL: http://cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction/dis...
Description:Efficient conversion of sunlight into electrical and/or chemical energy is of great technological importance for modern society and future generations. One attractive possibility for utilization of solar energy is based on the ability of small semiconductor particles to function as photocatalysts promoting various oxidation and reduction reactions under sunlight. Titanium dioxide (TiO2) is the most promising material for such applications because it is an efficient, environmentally friendly, and relatively inexpensive photocatalyst. However, wide technological usage of this photocatalyst is largely hindered by the fact that ultraviolet light that does not constitute a significant fraction of the solar spectrum that is required for its activation. Any improvement of photocatalytic efficiency of TiO2 by shifting its optical response from UV to the visible spectral range will have a profoundly positive effect. The main objective of the proposed research is to synthesize and test a novel photocatalyst that consists of small silver or gold nanoparticles covered with a thin TiO2 shell. Silver and gold nanoparticles are very efficient systems for the interaction with visible light due to the excitation of plasmon resonances. It is expected that, due to the coupling of plasmon resonances in the core with the electron-hole pair generation in the shell, these hybrid Ag/Au TiO2 nanoparticles will exhibit photocatalytic activity in the visible spectral range thereby more efficiently utilizing solar energy.

Products/Reports


Funding Organizations

Below is a list of organizations with individual contacts that are funding this project.

U.S. EPA Headquarters - Primary Contact

U.S. EPA Headquarters 8722R
1200 Pennsylvania Avenue, N. W.
Washington, District of Columbia 20460
p: 202-343-9858
Individual Contacts


Organizations Receiving Funding

Below is a list of organizations with individual contacts that are receiving funding for this project.

Clemson University - Primary Contact

201 Sikes Hall
Clemson, South Carolina 29634
Individual Contacts

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