Fig. 3
(a) The coloration kinetic of the WO3/CNC (1/10) film and the WO3/CNC (1/10) top covered with the CeO2/CNC films with different CeO2 content. (b) The coloration kinetic of the WO3/CNC (1/10) film and the CeO2/WO3/CNC films with different component ratios. (c) The coloration kinetic of the WO3/CNC (1/10) film, the WO3/CNC (1/10) film top covered with the avobenzone/cellulose films with different component ratios, and the avobenzone/WO3/cellulose films with different component ratios. The kinetic curves were measured using the relative intensities of the 620 nm band in UV–vis diffuse reflectance spectra. d) The fragments of the FTIR spectra before and after UV-irradiation of the films: WO3/CNC (1/10), CeO2/WO3/CNC (0.5/1/10) and CeO2/WO3/CNC (1/1/10).
