Visible Light Absorption Characteristics of M-Nitrogen (M= Mn, Fe, Co, Ni, Cu) Co-Doped Monodisperse TiO2 Microparticles

Abstract

There is great interest in improving TiO2’s photocatalytic activity in the visible portion of electromagnetic spectrum. Recent work has shown that co-doping mesoporous TiO2 microparticles with a transition metal and nitrogen, hereby designated as (M,N) TiO2, significantly increases its visible light absorption. However, the hydrothermal method used to produce the microparticles creates a wide distribution in the size of the microparticles, which could affect the absorption properties. Recently, it has become possible to produce monodisperse, mesoporous TiO2 microparticles with engineered sizes using a hybrid sol-gel/hydrothermal technique. Further, it has also been shown that the size of monodisperse TiO2 microparticles affects the the photocatalytic activity.

This study investigated whether using mondodisperse (M,N) TiO2 microparticles would further increase visible-light absorption for (M,N)TiO2. The first-row transition metals chosen for this study - Mn, Fe, Co, Ni, and Cu – have been characterized in the earlier (M,N) TiO2 UV-vis study, which was used as a baseline. The doping levels of the transition metals samples were set at the 2.5 percent level previously shown to be optimum for photocatalytic activity.

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References

  1. [1]

    A. L. Linsebigler, G. Lu and J. John T. Yates, “Photocatalysis on TiO2 on Surfaces: Principles, Mechanisms, and Selected Results,” Chem. Rev., vol. 95, pp. 735–758, 1995.

    CAS  Article  Google Scholar 

  2. [2]

    A. R. Pascoe, D. Chen, F. Huang, N. W. Duffy, R. A. Caruso and Y.-B. Cheng, “Charge Transport in Photoanodes Constructed with Mesoporous TiO2 Beads for Dye-Sensitized Solar Cells,” Journal of Physical Chemistry C, vol. 118, no. 30, pp. 16635–16642, 2014.

  3. [3]

    W. Zhu, X. Qiu, V. Iancu, X. Q. Chen, H. Pan, W. Wang, N. M. Dimitrijevic, T. Rajh, H. M. M. III, M. P. Paranthaman, G. M. Stocks, H. H. Weitering, B. Gu, G. Eres and Z. Zhang, “Band Gap Narrowing of Titanium Oxide Semiconductors by Noncompensated Anion-Cation Codoping for Enhanced Visible-Light Photoactivity,” Phys. Rev. Lett., vol. 103, p. 226401, 2009.

  4. [4]

    R. Zhang, Q. Wang, J. Liang, Q. Li, J. Dai and W. Li, “Optical properties of N and transition metal R (R=V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) codoped anatase TiO2,” Physica B, vol. 407, pp. 2709-2715, 2012.

  5. [5]

    J. E. Mathis, Z. B. J. J. Lieffers, C. A. Bridges, M. K. Kidder and M. P. Paranthaman, “Increased photocatalytic activity of TiO2 mesoporous microspheres from co-doping with transition metals and nitrogen,” unpublished

  6. [6]

    D. Chen, L. Cao, F. Huang, P. Imperia, Y.-B. Cheng and R. A. Caruso, “Synthesis of Monodisperse Mesoporous Titania Beads with Controllable Diameter, High Surface Areas, and Variable Pore Diameters (14-23 nm),” J. Am. Chem. Soc. 2010, 132, vol. 132, p. 4438–4444, 2010.

  7. [7]

    Y. Chen, F. Huang, D. Chen, L. Cao, X. L. Zhang, R. A. Caruso and Y.-B. Cheng, “Effect of Mesoporous TiO2 Bead Diameter in Working Electrodes on the Efficiency of Dye-Sensitized Solar Cells,” ChemSusChem, vol. 4, p. 1498 – 1503, 2011.

  8. [8]

    J. E. Mathis, Z. Bi, C. A. Bridges, M. K. Kidder and M. P. Paranthaman, “Enhanced visible-light absorption of mesoporous TiO2 by co-doping with transition-metal/nitrogen ions,” MRS Proceedings, vol. dx.doi.org/10.1557/opl.2013.666, p. 1547, 2013.

  9. [9]

    X. Wang, L. Cao, D. Chen and R. A. Caruso, “Engineering of Monodisperse Mesoporous Titania Beads for Photocatalytic Applications,” Appl. Mater. Interfaces, vol. 5, pp. 9421–9428, 2013.

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Mathis, J.E. Visible Light Absorption Characteristics of M-Nitrogen (M= Mn, Fe, Co, Ni, Cu) Co-Doped Monodisperse TiO2 Microparticles. MRS Online Proceedings Library 1806, 4 (2015). https://doi.org/10.1557/opl.2015.471

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