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Chan DK, Cheung PL, Yu JC. A visible-light-driven composite photocatalyst of TiO2 nanotube arrays and graphene quantum dots. Beilstein J Nanotechnol. 2014;5:689-95doi: 10.3762/bjnano.5.81.
Chan, D. K., Cheung, P. L., & Yu, J. C. (2014). A visible-light-driven composite photocatalyst of TiO2 nanotube arrays and graphene quantum dots. Beilstein journal of nanotechnology, 5689-95. https://doi.org/10.3762/bjnano.5.81
Chan, Donald K L, et al. "A visible-light-driven composite photocatalyst of TiO2 nanotube arrays and graphene quantum dots." Beilstein journal of nanotechnology vol. 5 (2014): 689-95. doi: https://doi.org/10.3762/bjnano.5.81
Chan DK, Cheung PL, Yu JC. A visible-light-driven composite photocatalyst of TiO2 nanotube arrays and graphene quantum dots. Beilstein J Nanotechnol. 2014 May 22;5:689-95. doi: 10.3762/bjnano.5.81. eCollection 2014. PMID: 24991506; PMCID: PMC4077368.
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Beilstein J Nanotechnol. 2014 May 22;5:689-95. doi: 10.3762/bjnano.5.81. eCollection 2014.

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

Beilstein journal of nanotechnology

Donald K L Chan, Po Ling Cheung, Jimmy C Yu

Affiliations

  1. Department of Chemistry and Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.

PMID: 24991506 PMCID: PMC4077368 DOI: 10.3762/bjnano.5.81

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.

Keywords: TiO2 nanotube arrays; anodic oxidation; graphene quantum dots; photocatalyst; photodegradation

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