Figure 2.
FT-IR spectra of (a) pure SiO2; (b) SiO2/CGA, 5 wt%; (c) SiO2/CGA, 10 wt%; (d) SiO2/CGA, 15 wt%; (e) SiO2/CGA, 20 wt%; and (f) pure CGA.
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