File Name : fig.s1.jpg Caption : fig. s1. thermodynamic plot of as(iii) adsorption by mn-ce/ac3. File Name : fig.s2.jpg Caption : fig. s2 elemental mapping images of mn-ce/ac3-as(iii). File Name : fig.s3.jpg Caption : fig. s3 full-range xps spectra of fresh mn-ce/ac3 and mn-ce/ac3 after adsorption of as(iii).