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Bimetallic nanoparticles are successfully formed on the surface of TiO2 (see figure) with Ag shell layer (nL) control. [email protected]/TiO2 exhibits unique photocatalytic performances for reduction of nitorobenzene at nL≤1, however when nL exceeds ≈1 they are similar to those of Ag/TiO2. Furthermore at the critical value of nL≈1, the surface properties of [email protected] nanoparticles change from Pt to Ag.
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Tada et al. (2006) studied this question.
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