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. 2013 Mar 7;3:1399. doi: 10.1038/srep01399

Figure 2. Gelation process of the TiO2-NC hydrogels.

Figure 2

(a) The conversion of the monomer by TiO2 under a xenon lamp with an AM 1.5 G filter. The precursor consisted of 3% DMAA, 3% Clay-NS, 94% D2O, and 0.1% TiO2. (b) DLS analysis of the sample during irradiation. The precursor solution containing 3% DMAA, 3% clay, 94% H2O, and 0.1% TiO2 was irradiated for different times. (c) The EPR spectrum of the precursor consisting of TiO2 and DMAA under UV irradiation. (d) The molecular weight distribution of the PDMAA polymers formed from the aqueous mixture of TiO2 and DMAA after 1 h of sunlight irradiation.