Among various metal oxide-supported Au nanoparticles, Au/rutile TiO 2 exhibits a particularly high level of visible-light activity for aerobic oxidation of amines to yield the corresponding imines on a synthetic scale with high selectivity (>99%) at 298 K. Experimental results have suggested that the reaction proceeds via the localized surface plasmon resonance-excited electron transfer from the Au nanoparticle to the TiO 2 .
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Naya et al. (2012) studied this question.
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