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Graphene Co-Doped TiO2 Nanocomposites for Photocatalysis and Photovoltaics Applications

Affiliations

  • Department of Chemical Engineering, 92, A.P.C Road, Kolkata – 700009, India

Abstract


In this paper general plans are anticipated by passivated co-doping to enhance the activity of TiO2 semiconductors for photocatalysis and photovoltaics applications. We synthesized graphene doped TiO2 powder as well as thin film using chemical solution deposition method. Structural and morphological characterization confirmed that the formed thin film is impurity free and with uniform pattern. XRD peaks clearly indicate formation of pure anatase phase. Our results shows that the graphene co-doping TiO2 has modified the catalyst band edges by raising the valence band (VB) edge significantly and the band gap for co-doping system became narrow to about 1.635 eV. We observed significant results of this film in the photocatalysis and photovoltaics application. In presence of graphene doped TiO2 nanocomposite, ∼80% of MB was degraded within 180 min. The fabricated cell with graphene doped TiO2 nanocomposite shown cell efficiency around 1.12 %. It was observed that due to its cost effectiveness stability, and enhance photon absorption property this graphene doping TiO2 thin film has high potential to be applied in industry

Keywords

Doping, Graphene, Nanocomposites, Photocatalysis, Photovoltaics

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References


  • Burschka J, Pellet N, Moon SJ, Humphry-Baker R, Gao P, Nazeeruddin MK, Gratzel M. Sequential deposition as a route to high-performance perovskite-sensitized solar cells.Nature. 2013; 499(7458):316–9. Crossref.
  • Moyez A, Dhar A, Sarkar P, Jung HS, Roy S. Review of the multiple exciton generation in photovoltaics. Reviews in Advanced Sciences and Engineering. 2016; 5:51–64.Crossref.
  • Han GS, Lee S, Kim DW, Kim DH, Noh JH, Park JH, Roy S, Ahn TK. A simple method to control morphology of hydroxyapatite nano-and microcrystals by altering phase transition route. Crystal Growth & Design. 2013; 13(8):3414–18. Crossref.
  • Malliga P, Pandiarajan J, Prithivikumaran N, Neyvasagam K. Influence of film thickness on structural and optical properties of sol – gel spin coated TiO2 thin film. Journal of Applied Physics. 2013; 6(1):21–8.
  • Zwilling V, Aucouturier M, Darque-Ceretti E. Anodic oxidation of titanium and TA6V alloy in chromic media.An electrochemical approach. Electrochimica Acta. 1999; 45(6):921–9. Crossref.
  • Roy S, Han GS, Shin H, Lee JW, Mun J, Shin H, Jung HS.Low temperature synthesis of rutile TiO2 nanocrystals and their photovoltaic and photocatalytic properties. Journal of Nanoscience and Nanotechnology. 2015; 15:4516–21.Crossref.
  • Dey A, Moyez A, Mandal MK, Roy S. Fabrication of solar cell using extracted biomolecules from tea leaves and hybrid perovskites. Materials Today: Proceedings. 2016; 3:3498–504. Crossref.
  • Etacheri V, Valentin CD, Schneider J, Bahnemann D, Pillai SC. Visible-light activation of TiO2 photocatalysts: Advances in theory and experiments. Journal of Photochemistry and Photobiology C: Photochemistry Rev. 2015; 25:1–29.Crossref.
  • Li X, Xiong R, Wei G. S–N Co-doped TiO2 photocatalysts with visible-light activity prepared by sol–gel method.Catalysis Letter. 2008; 125(1):104–9. Crossref.
  • Shon HK, Phuntsho S, Okour YH, Kim JH. Visible light responsive titanium dioxide (TiO2). Journal of the Korean Industrial and Engineering Chemistry. 2008; 19(1):1–16.
  • Liang YC, Lung TW. Growth of hydrothermally derived CdS-based nanostructures with various crystal features and photoactivated properties. Nanoscale Research Letters. 2016; 11:264. https://doi.org/10.1186/s11671-016-1490-x
  • Zhou Y, Ma Y, Yang X, Sheng W, Xing M, Zhang J. Facile synthesis of the Ti3+ self-doped TiO2-graphene nanosheet composites with enhanced photocatalysis. Scientific Reports. 2015; 5(8591):1–6.

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