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(a) Thermogravimetric analysis of the obtained LSA-FAS and LSA-FAS-Cu2+. (b) XPS spectra of LSA-FAS-Cu2+ in the Cu 2p3/2 and Cu LMM regions (inset). (c) FSEM images of LSA-FAS-Cu2+ at different scales (top) and its elemental mapping showing C, Cu, O, and S elements (bottom). Adapted with permission from reference [33]. Copyright 2014 Atlanta Publishing House LLC.
