1. XRD patterns of TiSe₂ nanosheets grown at different reaction time

2. Photograph of TiSe₂ powder (a); SEM images of TiSe₂-10 min (b), TiSe₂-50 min (c), TiSe₂-90 min (d) and EDS mapping of TiSe₂-90 min (e-g)

3. Formation schematic illustration of TiSe₂ nanosheets

4. (a) Absorption spectra of RhB after exposure in the presence of TiSe₂-10 min nanosheets at different illumination time, (b) variation of concentration of RhB solution at different illumination time, (c) degradation kinetic curves and (d) changes in color of RhB solution after photocatalytic degradation