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Postdoctoral and Staff Researchers |
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Theresa researches reactions or interactions of self-assembled monolayers attached to silicon or gold substrates with atmospherically relevant gases and water.
Guofeng...
I am still fascinated by the reactivity of metal oxide surfaces and nanoparticles. I currently collaborate to study hydrocarbons dehydrogenation reactions on supported Pt nanoparticles using HREELS. I also investigate the reactivity of other supported metal oxide materials, such as TiO2, using thermal desorption techniques. Outside of our lab in Irvine, I helped set up a liquid microjet XPS setup at the Advanced Light Source at Berkeley National Lab. With this technique we investigate physical and chemical properties of acetonitrile and ionic aqueous solutions. We also use a similar technique to study dissociation of acids and protonation of amine solutions with our collaborators at the BESSY facility in Berlin, Germany.
James developed the process of growing titanium dioxide (TiO2) nanoparticles on the steps of highly oriented pyrolytic graphite (HOPG) using physical vapor deposition (PVD). He then photodeposited Pt and Au nanoparticles selectively onto the TiO2 nanoparticles for heterogenous and photocatalytic studies. He is currently developing a process to grow (TiO2) nanoparticles on indium tin oxide (ITO).
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