Surfactant-free Self-Templating Construction of BiOCl/BiO1.84H0.08 Nanodisc Heterostructures with Visible-Light-Driven Antibacterial Activity

摘要

abstract_textpA unique nanodisc heterostructure is achieved at room temperature without any additional organic surfactants. By using bismuth oxychloride (BiOCl) precursor itself as templates, bismuth oxide hydrates BiO1.8 center dot 0.04H(2)O (BiO1.84H0.08) ultrathin nanosheets are generated to be stacked around the original BiOCl nanodiscs, while the major composition of the inner part remains the precursor itself. Notably, the obtained nanodisc heterostructures well duplicate the size and overall discal shape of the precursor. The structural and crystalline matching of two phases is favour for the morphological construction, further facilitating the separation and transfer of photogenerated charge carries. Significantly, the BiOCl/BiO1.84H0.08 heterostructures exhibit excellent photocatalytic activity in bacterial inactivation under visible light irradiation, which is mainly due to the directly oxidation of photoexcited hole (h(+)). Accordingly, a h(+) transfer process between two phases is proposed. This work will inspire the exploration of a facile way to construct unique heterostructures with diverse photocatalytic applications./p/abstract_text