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UV-vis DRS of Au9-MPTMS@Na-LTA (0.75 ± 0.01 wt% Au) (a) before and after calcination under static air at different temperatures of 200, 300, and 400 °C and (b) after ozonolysis at different temperatures of 25, 150, 200, and 300 °C. (c) UV-vis DRS of Au9-MPTMS@Na-LTA with 0.75 ± 0.01 and 1.11 ± 0.02 wt% Au after ozonolysis at 200 °C.
