Figure 1
(a) UV-visible spectra of ZnS nanoparticles at different [Zn(OAc)2]:[Na2S] ratios. [Zn(OAc)2]:[Na2S] : (1) 1:1, (2) 1:1.5, (3) 1:2, (4) 1:3. (b) UV-vis absorption spectra of ZnS nanoparticles at different concentrations in 1.5 mM aqueous CTAB. [ZnS]: (1) 0.1 mM, (2) 0.2 mM, (3) 0.3 mM, (4) 0.4 mM, (5) 0.5 mM, (6) 0.6 mM, (7) 0.7 mM. (c) Dependence of absorption shoulder and molar extinction coefficient, ε, of ZnS dispersions in 1.5 mM aqueous CTAB on [ZnS]