کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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59920 | 1419449 | 2013 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nitrogen-doped graphene/CdS hollow spheres nanocomposite with enhanced photocatalytic performance Nitrogen-doped graphene/CdS hollow spheres nanocomposite with enhanced photocatalytic performance](/preview/png/59920.png)
A novel N-doped graphene/CdS hollow sphere nanocomposite photocatalyst was synthesized by a simple, template-free one-pot method. The samples were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, N2 adsorption-desorption, photoluminescence spectroscopy, and X-ray photoelectron spectroscopy. Photocatalytic degradations of methylene blue and salicylic acid were carried out to evaluate the photocatalytic activity of the nanocomposites under visible light irradiation. The N-graphene/CdS nanocomposites exhibited excellent stability and high photocatalytic activity, exceeding those of graphene oxide/CdS hollow sphere nanocomposites and pure CdS hollow spheres. This excellent photocatalytic activity of the nanocomposite was due to N-graphene acting as an excellent electron acceptor and transporter, thus reducing charge carrier recombination. It was also found that
• OH acted as the main reactive species in the degradation of methylene blue under visible-light irradiation.
A nitrogen-doped graphene/CdS hollow sphere nanocomposite (HSN) was synthesized by a simple, template-free one-pot method. The N-graphene acted as an electron transfer channel to reduce the recombination of photogenerated electron-holes, which led to dramatically enhanced photoactivity and stability.Figure optionsDownload as PowerPoint slide
Journal: Chinese Journal of Catalysis - Volume 34, Issue 11, November 2013, Pages 2138–2145