Fig. 6: Optical properties, electrochemical performence and photocatalytic machanism of flexible fibers.

a Ultraviolet‒visible diffuse reflectance spectra and Tauc plots, b PL, c EIS and d transient photocurrent response spectra, e Mott–Schottky curves, f VB-XPS spectra, g energetics for photocatalytic degradation of TC by PI, PI/TiO2 and the PI/TiO2/Ag-0.07 flexible fibers and h effects of different scavengers on the photocatalytic degradation of TC by the PI/TiO2/Ag-0.07 flexible microfibers