File S1 - Adsorption of Cu(II) on Oxidized Multi-Walled Carbon Nanotubes in the Presence of Hydroxylated and Carboxylated Fullerenes

Figure S1, FTIR spectrum of (A) oMWCNTs; (B) oMWCNTs+Cu(II); (C) oMWCNTs+Cu(II)+C60(OH)n; (D) oMWCNTs+Cu(II)+C60(C(COOH)2)n. Figure S2, Relative proportion of Cu(II) species as a function of pH; C[Cu2+]initial = 1.87×10−4 mol·L−1, I = 0.01 mol/L NaCl, T = 25±1°C, PCO2 = 10−3.58 atm. Figure S3, Effect of C60(OH)n on the zeta potential of oMWCNTs. Figure S4, Effect of C60(C(COOH)2)n on the zeta potential of oMWCNTs. Figure S5, The dispersibility of oMWCNTs after adding different concentration soluble fullerene: (A) single oMWCNTs; (B) oMWCNTs +10 mg C60(C(COOH)2)n; (C) oMWCNTs +100 mg C60(C(COOH)2)n; (D) oMWCNTs +1000 mg C60(C(COOH)2)n; (E) oMWCNTs +10 mg C60(OH)n; (F) oMWCNTs + 100 mg C60(OH)n; (G) oMWCNTs + 1000 mg C60(OH)n. Table S1, The parameters of C60(C(COOH)2)n and C60(OH)n species. Table S2, The influence of adding order of species on Cu((II) sorption on oMWCNTs. Table S3, Constants for the kinetic adsorption of Cu(II) on oMWCNTs using different adsorption models. (DOCX)