Growth Mechanism and Optical Properties Determination of CdS Nanostructures

Enhanced blue-light photocatalytic H2 production using CdS nanofiber

“…Both nanostructured CdS samples synthesized at 110°C reveal similar nanocrystallite size in both (002) and (100) directions (~10 and~4 nm, respectively); and for the cubic CSC-Sp sample, synthesized at room temperature, the average nanocrystallite size is (~10 nm) in the (111) direction. These results show that nanostructured hexagonal CdS can be obtained at high (en) contents with thiourea [27] or CS 2 at a moderated temperature conditions. In addition, a higher specific surface area for the CSC (139 m 2 /g) than those of the CST (119 m 2 /g) and CSC-Sp (13 m 2 /g) was obtained (Table 2).…”

Kinetic study of the 4-Nitrophenol photooxidation and photoreduction reactions using CdS

“…2 shows the UV-vis diffuse reflectance spectra for the CdS photocatalyst. The photocatalyst exhibits an absorption edge in the visible light region close to 490-520 nm attributed to the intrinsic band-gap transition of an electron from the valence to the conduction band [19,20]. The band-gap energy value of 2.46 eV was estimated by the Kubelka-Munk (K-M) method, extrapolating the linear portion of the (FR × hv) 2 vs hv curves to FR = 0 (inserted in Fig.…”

The critical role of surfactants towards CdS nanoparticles: synthesis, stability, optical and PL emission properties

“…Among the few studies, Mehta et al 29 have carried out various investigations related to the synthesis and growth of CdS NPs stabilized with different cationic surfactants in aqueous media. Pandey et al 30 have studied the effect of the reaction time and surfactants (cetyltrimethyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS)) on the morphology and size of the CdS NPs to show dramatic shape and size variations by varying the surfactant and reaction time. Chakraborty et al 31 have utilized a very simple approach to prepare nanodispersions (colloids) of CdS and HgS as well as their core-shell products and composites (co-colloids) in micellar solutions of the cationic surfactant CTAB.…”