fig1

Figure 1. SEM image of (A) CeO2-CTAB0.5, (B) CeO2-CTAB1.0 and (C) CeO2-CTAB2.0. (D) XRD patterns of precursor and calcined product of CeO2-CTAB 1.0. (E) The N2 adsorption and desorption isotherm curves. (F) Pore size distribution curves of CeO2.