Synthesis of TiO2–polyaniline core–shell nanofibers and their unique UV photoresponse based on different photoconductive mechanisms in oxygen and non-oxygen environments

Abstract

The TiO₂–polyaniline (PANI) core–shell nanofibers with unique ultraviolet (UV) photoresponse were designed and fabricated. When the core–shell nanofibers were tested in an oxygen (O₂) and a non-oxygen environment under UV illumination, respectively, a decrease and an increase in photoconduction were observed, which suggested different photoconductive mechanisms of the core–shell materials in different environments.