Mechanism insights into the enhanced activity and stability of hierarchical bismuth oxyiodide microspheres with selectively exposed (0 0 1) or (1 1 0) facets for photocatalytic oxidation of gaseous mercury

Selectively exposing different facets of the photocatalysts to enhance the photocatalytic activity is a promising method. However, the role of exposed specific facets in a photocatalytic process is not fully understood. In order to clarify this mechanism, we have systemically explored the relationships between selectively exposed facets and photocatalytic activity of the nanoplate bismuth oxyiodide (BiOI). The BiOI was synthesized by pH-induced...