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O: Fachverband Oberflächenphysik

O 11: Nanostructures at Surfaces I

O 11.1: Vortrag

Montag, 31. März 2014, 10:30–10:45, WIL C107

Two Dimensional Square-like Bismuth Oxyiodine Nanosheets with High Efficient Visible-Light Driven Photocatalytic Activity — •Yan Mi, Min Zhou, Liaoyong Wen, and Yong Lei — Ilmenau University of Technology, Institute of Physics & IMN MacroNano(ZIK) Prof. Schmidt-Str. 26, 98693 Ilmenau (Germany)

Two dimensional (2D) square-like bismuth oxyiodine (BiOI) nanosheets with thickness of about 10 nm and exposed {001} facets are obtained by a facile hydrothermal route without any surfactant and speical solvent. The photocatalytic performance of as-prepared 2D square-like BiOI nanosheets are evaluated by the photodegradation of rhodamine-B (RhB), methyl orange (MO) and phenol under visible-light irradiation. The products show highly efficient photocatalytic performance and good photostability and recyclability under the visible light irradiation. The efficient visible-light driven photocatalytic activity can be ascribed to the thin 2D square shape nanosheet with exposed {001} facet, which provides appropriate diffusion length and self-induced internal static electric fields direction of BiOI, improves the separation efficiency of photoinduced electron-hole pairs in BiOI nanosheets.