A redox-active support for the synthesis of Au@SnO₂ core-shell nanostructure and SnO₂ quantum dots with efficient photoactivities.

ABSTRACT: A defect pyrochlore-type Sn_1.06Nb₂O_5.59F_0.97 (SnNbOF) nano-octahedron is used as a redox-active support for fabricating Au@SnO₂ core-shell and SnO₂ quantum dots at room temperature without the use of organic species or foreign reducing reagents. Gold (Au) and SnO₂ components were obtained through an in situ redox reaction between the HAuCl₄ and reductive Sn²⁺ ions incorporated in SnNbOF. The composition and morphology of the resulting nanocomposites (denoted as Au-SnNbOF) could be controlled by adjusting the Au/SnNbOF ratio. The Au-SnNbOF nanocomposites exhibited efficient photoactivities for methyl orange (MO) degradation under the visible light irradiation (λ > 420 nm), during

SUBMITTER: Pan X 

PROVIDER: S-EPMC9056741 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature