Fig. A.2
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SEM images of some of the mixed sample prepared in this work. Panels A to D: Samples MIX-01C, MIX-02C, MIX-03D, and MIX-05B, respectively. The nominal percentage of SAC distributed on the bright grain surface increase is, respectively, 1%, 5%, 10%, and 50% among different samples. Spatial scale is not the same for all the images to shows the samples at different zoom levels.
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