Ag@TiO2 core–shell nanocomposite nanowires can be fabricated by a vapor-thermal method. These Ag@TiO2 composite superstructures show higher photocatalytic activity than conventional TiO2and P25 particles for the photocatalytic decolorization
of Rhodamine B aqueous solution at ambient temperature, partly due to their specific hierarchical structure easily accessible to light and reactants. After five recycles of the RhB photodegradation, the sample B retained its activity, proving high stability of the
Ag@TiO2composite superstructures. This study may provide new insights into the design and fabrication of advanced photocatalytic materials with complex hierarchical architectures and enhanced photocatalytic activity. It should be noted that the synthesis strategy may be extended to the preparation of complex functional
stuctures with controlled physicochemical properties for a variety of applications such as wastewater treatment.