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A visible-light-driven composite photocatalyst of TiO2 nanotube arrays and graphene quantum dots.

ABSTRACT: TiO2 nanotube arrays are well-known efficient UV-driven photocatalysts. The incorporation of graphene quantum dots could extend the photo-response of the nanotubes to the visible-light range. Graphene quantum dot-sensitized TiO2 nanotube arrays were synthesized by covalently coupling these two materials. The product was characterized by Fourier-transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and UV-vis absorption spectroscopy. The product exhibited high photocatalytic performance in the photodegradation of methylene blue and enhanced photocurrent under visible light irradiation.

SUBMITTER: Chan DK

PROVIDER: S-EPMC4077368 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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A visible-light-driven composite photocatalyst of TiO2 nanotube arrays and graphene quantum dots.

Chan Donald K L DK Cheung Po Ling PL Yu Jimmy C JC

Beilstein journal of nanotechnology 20140522

TiO2 nanotube arrays are well-known efficient UV-driven photocatalysts. The incorporation of graphene quantum dots could extend the photo-response of the nanotubes to the visible-light range. Graphene quantum dot-sensitized TiO2 nanotube arrays were synthesized by covalently coupling these two materials. The product was characterized by Fourier-transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravim ...[more]

PMID: 24991506

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