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Preparation and Photocatalytic Properties of Mo-Doped TiO2@Fly Ash Cenospheres for Degradation of Methylene Blue

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Characterization of Minerals, Metals, and Materials 2020

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

Abstract

Mo-doped titanium dioxide (TiO2)-coated fly ash cenosphere (FAC) was synthesized by the sol-gel method. The novel photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS), and X-ray photoelectron spectra (XPS). The results showed that the catalyst maintains the structure of anatase (TiO2), and the majority of doped Mo ions existed as Mo6+ substitution in anatase lattice, which caused redshift of TiO2 light absorption wavelength, broadening the light absorption range and making more effective use of solar energy. The photocatalytic activity of Mo-TiO2@FAC sample for the degradation of methylene blue (MB) under visible light irradiation was investigated. The photocatalyst that was calcined at 550 °C with Mo/Ti molar ratio of 0.3% and concentration of 2 g/L exhibited the optimal photodecomposition property.

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Authors and Affiliations

  1. School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan, 410083, China

    Yongfeng Cai, Bin Xu, Min Li, Pengxu Cao, Jun Luo, Mingjun Rao, Zhiwei Peng & Guanghui Li

  2. National Engineering Laboratory for High Efficiency Recovery of Refractory Nonferrous Metals, Changsha, Hunan, 410083, China

    Yongfeng Cai, Bin Xu, Min Li, Pengxu Cao, Jun Luo, Mingjun Rao, Zhiwei Peng & Guanghui Li

Authors
  1. Yongfeng Cai
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  2. Bin Xu
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  3. Min Li
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  4. Pengxu Cao
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  5. Jun Luo
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  6. Mingjun Rao
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  7. Zhiwei Peng
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  8. Guanghui Li
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Corresponding author

Correspondence to Guanghui Li .

Editor information

Editors and Affiliations

  1. CanmetMATERIALS, Hamilton, ON, Canada

    Jian Li

  2. ArcelorMittal Global R&D, Schererville, IN, USA

    Mingming Zhang

  3. Michigan Technological University, Houghton, MI, USA

    Bowen Li

  4. Military Institute of Engineering, Rio de Janeiro, Brazil

    Sergio Neves Monteiro

  5. Al Isra University, Amman, Jordan

    Shadia Ikhmayies

  6. Middle East Technical University, Ankara, Turkey

    Yunus Eren Kalay

  7. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  8. University of New South Wales, Canberra, BC, Australia

    Juan P. Escobedo-Diaz

  9. Los Alamos National Laboratory, Los Alamos, NM, USA

    John S. Carpenter

  10. United States Army Research Laboratory, Adelphi, MD, USA

    Andrew D. Brown

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Cai, Y. et al. (2020). Preparation and Photocatalytic Properties of Mo-Doped TiO2@Fly Ash Cenospheres for Degradation of Methylene Blue. In: Li, J., et al. Characterization of Minerals, Metals, and Materials 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36628-5_17

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