Simple preparation of a cadmium selenide–montmorillonite hybrid

Nanoengineered CdSe quantum dot–montmorillonite composites: an efficient photocatalyst under visible light irradiation

“…Upon composite formation between Na-MMT and CdSe-CTAB, the peak positions corresponding CdSe Wurtzite structure are retained with broadened nature. It implies that CdSe QD's are homogeneously dispersed 26 within the MMT matrix with the particle size in the range of 2-3 nm. Thus, it may be argued that the interlayer spacing of MMT is effectively utilized for the formation of the organically modied CdSe-CTAB-MMT nanocomposites.…”

“…37,38 The blue shi of the near bandedge emission for composites is originating from quantum connement as well as exfoliated nature of MMT sheets. 26 It is plausible that such a feature arises due to surface defects that may lead to dissipation of emission energy and subsequent broadening of band-edge emission. 39…”

“…38 Due to pillaring, the change in the basal space enhances the accessibility of IC towards CdSe centres that are responsible for the efficient degradation of dye in presence of light. 26 Since photocatalytic degradation of dye is a pH dependent phenomenon, effect of pH on removal capacity in the pH range of 1-8 is carried out on 10%-CdSe-CTAB-MMT composite. Higher removal capacity at pH 7 (ESI, Fig.…”