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- W2005012363 abstract "The relative photocatalytic activity (salicylic acid oxidation) and photoluminescence ( λ ext = 380 nm in acetone dispersion) of as-synthesized CdS nanostructures (NS = nanosphere and NR = nanorods (CdS-2 h, 6 h and 10 h) of different aspect ratio and Au/Ag deposited CdS-10 h) are considerably varied (photoactivity increases while photoemission decreases) with the crystallinity, length, BET surface area, surface to volume ratio, area per particle and Au/Ag deposition. ► Hexagonal CdS nanorods of varied length, width and surface area is prepared. ► Photoactivity of CdS nanorod improves with the length and radial diameter. ► CdS luminescence increases with the decreasing crystallinity and aspect ratio. ► Size and nature (Au/Ag) of metal deposition alter the photoresponse of CdS. ► CdS absorption and emission are greatly changed due to quantum size effect. CdS nanorods having different aspect ratio viz., 17 (length ∼170 nm and width ∼10 nm) and 28 (length ∼140 nm and width ∼5 nm) has been synthesized by solvothermal technique at different time intervals (2–10 h). The effect of aspect ratio, crystallinity, band gap energy, surface area and Au/Ag loading on the various photoactive properties of these CdS nanostructures are discussed here. The photocatalytic activity for salicylic acid oxidation under UV irradiation is gradually improved with the increasing crystallinity of CdS nanostructures, length (140 < 170 nm), exposed area (2358 < 5722 nm 2 ) per particle and decreasing surface area (158 < 122 < 76 m 2 g −1 ), surface to volume ratio (0.82 < 0.41 nm −1 ) and aspect ratio (28 < 17). The deposition of 1–2 wt% Au (∼3.5 nm) and Ag (∼1.8 nm) nanoparticles onto CdS drastically quenched the emission and enhanced the photocatalytic activity." @default.
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- W2005012363 date "2013-04-01" @default.
- W2005012363 modified "2023-10-03" @default.
- W2005012363 title "Fine-tuning the photoluminescence and photocatalytic properties of CdS nanorods of varying dimensions" @default.
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- W2005012363 doi "https://doi.org/10.1016/j.materresbull.2012.12.027" @default.
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