Abstract
Selenium nanospheres assembled by a large amount of nanocrystals (NCs) were facilely synthesized through in-situ reduction of graphene oxide (GO) using NaHSe as reducing agent as well as Se source. The structural and optical characterizations of these as-prepared products have been carried out at room temperature. The reduction of graphene oxide was accompanied by the deposition of Se nanospheres uniformly on the surface of reduced graphene oxide (RGO) sheets. Moreover, the product was found to exhibits orange red color luminescence under ultraviolet (UV) lamp for the first time with higher quantum yield (QY) of 8.11%, which is six times higher than that of GO aqueous solution (1.32%).
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