Abstract：Bi2WO6 nanosheets with exposed (001) facets were synthesized via a hydrothermal process, and then Pt nanoparticles were loaded on the surface of the as-synthesized Bi2WO6 through photo-reduction method. The photocatalytic performance of the as-prepared photocatalysts was probed by the photocatalytic oxidation of benzyl alcohol and decomposition of rhodamine B (RhB). In terms of the oxidation of benzyl alcohol, the conversion rate over Pt loaded Bi2WO6 samples could attain 20.7%, which was about twice that of Bi2WO6 without Pt loading. Additionally, the mineralization rate of RhB over the Pt loaded samples (~81.1%) was remarkably higher than that of the photocatalysts without Pt loading (~55.8%) after 40min irradiation. These results collectively demonstrated the superior degradation and mineralization ability of the Pt loaded Bi2WO6 nanosheets under irradiation. The boosting photocatalytic activity of the Pt loaded photocatalysts could be attributed to the synergistic effect of Pt loading and the exposure of high energy facets. The loading of Pt nanoparticles, as a cocatalyst, increases the active sites on the surface of the photocatalysts and thereby promotes the separation and migration efficiency of photo-induced electron-hole pairs on the facets.
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