File Name : fig.s1.tif

Caption : fig. s1 photos of system before and after reaction.

File Name : fig.s2.tif

Caption : fig. s2 time dependent ph variation of reaction system.

File Name : fig.s3.tif

Caption : fig. s3 size distribution of as-prepared mno2 nps.

File Name : fig.s4.tif

Caption : fig. s4 tem image of cds.

File Name : fig.s5.tif

Caption : fig. s5 zeta potential of cds and mno2 nps, respectively.