Figure 2.

aNitrogen sorption isotherms of the samples successively produced in the synthesis: the SBA-15 hard template (■), CdR2@SBA-15 composites (●) prepared by the impregnation of CdR2into SBA-15, CdS@SBA-15 (▲) obtained from the CdR2@SBA-15 calcined at 160 °C, and CdS-SBA-15 replicas (▼) etched by NaOH solution.bThe corresponding pore-size distribution curves ofa

Yuan et al. Nanoscale Research Letters 2009 4:414-419   doi:10.1007/s11671-008-9247-9