Additional file 1.

Figure S1 and Figure S2. For Figure S1, AFM images of (A) ITO-APTES-GO, (B) ITO-APTES-E-rGO, (C) SiO2-APTES-GO and (D) SiO2-APTES-C-rGO. For Figure S2, proposed mechanism for reduction of ketone in GO by hydrazine vapor [2].

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Wang et al. Nanoscale Research Letters 2012 7:161   doi:10.1186/1556-276X-7-161