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Figure 1 Typical 1H NMR spectra of A) PLLA2 and B) MWCNTPLLA2 posites Figure 2. FTIR spectra of A) pristine MWCNTs, B) PLLA2, and C) MWCNTPLLA2 posites. Figure 3. Typical UVvis absorption spectra of A) PLLA2 and B) MWCNTPLLA2 posites. The inset figure shows the variation of absorption intensity of the MWCNTPLLA2 suspension at300–800 nm with time. Figure 4. Fluorescence spectra of A) PLLA2 and B) MWCNTPLLA2 posites. Figure 5. Raman spectra of A) the MWCNTPLLA2, B) the pristine MWCNTs, C) the MWCNTs obtained after alkaline hydrolysis of the MWCNTPLLA posites and following heat treatment at 550 oC under N2 atmosphere, and D) the MWCNTs obtained by alkaline hydrolysis of the MWCNTPLLA posites. 2 Solidphase photocatalytic degradation of polystyrene with modified nanoTiO2 catalyst Ling Zan, Songlin Wang, Wenjun Fa, Yanhe Hu, Lihong Tian and Kejian Deng, Polymer 47 (2022) 81558162 Fig. 1. The photographs amplified 100 times. (a) PSuntreated TiO2 film, (b) PSgTiO2 film (TiO2: 1%). Fig. 2. (a) The UVvis spectra of PSgTiO2 (2%) films under UVirradiation for 0 h, 15 h, 30 h, and 45 h. (b) The UVvis spectra of pure PS films under UVirradiation for 0 h, 15 h, 30 h, and 45 h. Fig.