Wet Chemically Synthesized Bismuth Oxyiodide (BiOI) Quantum Dots for Photocatalytic Degradation of Malachite Green.

Abstract

Using the chelating effect of ethylene glycol, bismuth oxyiodide (BiOI) quantum dots were prepared by a liquid phase reaction at room temperature. A variety of techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and ultraviolet-visible absorption spectra were used to characterize the morphology, size distribution, crystal phase and photocatalytic degradation performance of BiOI quantum dots. Results show that the prepared BiOI quantum dots have higher photocatalytic activity, and the k value is 20 times higher than that of BiOI nanoflakes.