Ag-Deposited Electrospun SrTiO₃ Nanofiber with Enhanced Photocatalytic Activity for Degradation of Methylene Orange

Perovskite SrTiO₃ nanofibers were successfully fabricated using a facile electrospinning method followed by calcination in air. The structures, morphologies, and photocatalytic performance of the one-dimensional SrTiO₃ nanofibers were determined through X-ray diffraction, UV-visible spectroscopy, scanning electron microscopy, and degradation of organic dye under light irradiation. The nanofibrous SrTiO₃ exhibited enhanced photocatalytic activity after photodeposition of Ag on its surface to degrade methylene orange dye. The nanofibrous structure of Ag-deposited SrTiO₃ was well preserved after photocatalytic degradation, revealing that the electrospun SrTiO₃ nanofiber exhibited high stability. The improved photocatalytic activity can be attributed to the extension of the visible light absorption edge and efficient charge separation on the Ag-deposited SrTiO₃ nanofibers.