Synthesis of hybrid Ta2O5@PDA/Au nanocomposites

Hybrid Ta₂O₅/Au nanoparticles (NPs) were synthesized by in situ radiolytic reduction of Au ions in tantalum oxide hydrosol. For efficient Au binding, Ta₂O₅ NPs were preliminarily modified with a polydopamine (PDA) coating. This one-pot approach allows the monodispersed Au NPs to be directly anchored on the Ta₂O₅@PDA surface, which compares favourably with conventional multi-stage method for creation such structures.