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Structurally Engineered Two-Dimensional Layered Bismuth Oxyiodide Surfaces as a “Dip Photocatalyst” for a Photocatalytic Reaction

Publication Type : Journal Article

Publisher : ACS Publications

Source : Crystal Growth & Design, ACS Publications, Volume 20, Issue 8, p.4909–4918 (2020)

Url : https://pubs.acs.org/doi/abs/10.1021/acs.cgd.9b01141

Campus : Coimbatore

School : Center for Industrial Research and Innovation

Year : 2020

Abstract : A simple protocol for the synthesis of two-dimensional (2D) layered bismuth oxyiodide (BiOI), at room temperature without any stabilizer, with well-defined exposed {001} facets and tunable morphologies (bowl shapes, square-sheet shape, and star shapes) was developed. The surface topographical analysis reveals layer-by-layer (LBL) stacking of ultrathin sheets of BiOI with a thickness of 1.8 nm. Transmission electron microscopy and selected area electron diffraction analysis established the exposed plane as {001}. A free-standing “dip photocatalyst” was fabricated by spin coating of bismuth oxyiodide (BiOI) and poly(vinyl alcohol) (PVA) aqueous solution on a polystyrene (PS) sacrificial substrate. Free-standing composite film of BiOI–PVA with a thickness of several micrometers was achieved by dissolving the polystyrene films in toluene. The photocatalytic activity of the BiOI–PVA “dip photocatalyst” was examined by the degradation of rhodamine B under a low power visible light source. Significantly, this approach to the formation of the “dip photocatalyst” is convenient to evaluate its fate through multiple reuses.

Cite this Research Publication : M. D. Prasad, M Krishna, G., and Sudip Kumar Batabyal, “Structurally Engineered Two-Dimensional Layered Bismuth Oxyiodide Surfaces as a “Dip Photocatalyst” for a Photocatalytic Reaction”, Crystal Growth & Design, vol. 20, no. 8, pp. 4909–4918, 2020.

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