CHED 1037 |
| The photoreaction of p−nitrobenzoic acid (PNBA) on Ag−Au nanoparticle alloy surfaces has been studied using surface−enhanced Raman scattering (SERS). Surfaces were prepared by citrate reduction of chloroauric acid and silver nitrate. Extinction spectra confirmed the formation of alloy nanoparticles. The photoreduction of PNBA to form azodibenzoate (ADBA) on surfaces under ambient conditions with 532 nm excitation was monitored by observing the 1450 cm-1 peak of the photoproduct. It was observed that the rate and extent of the photoreaction decreased as the mole fraction of Au in the nanoparticles was increased. |
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Undergraduate Research Poster Session: Physical Chemistry
2:00 PM-4:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |