Impact of Average, Local, and Electronic Structure on Visible Light Photocatalysis in Novel BiREWO6 (RE = Eu and Tb) Nanomaterials

Pradeep P. Shanbogh, Rajamani Raghunathan, Diptikanta Swain, Mikhail Feygenson, Joerg Neuefeind, Jasper Plaisier, Chandrabhas Narayana, Ashok Rao, Nalini G. Sundaram

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Crystal structures of hydrothermally synthesized BiEuWO6 and BiTbWO6 nanomaterials are deduced for the first time by combined Rietveld refinement of neutron and synchrotron data using the ordered and disordered models available in literature. The ordered model is validated for the average structure of these nanomaterials, and it is further supported by the local structure analysis using neutron pair distribution function. Nanomaterials are characterized by field-emission scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller surface area, diffused reflectance spectroscopy, and Raman Spectroscopy. Rare-earth-substituted nanomaterials are found to be efficient photocatalysts over the parent Bi2WO6 under visible light irradiation for Congo-red dye degradation. Particularly, BiTbWO6 shows an enhanced photocatalytic (PC) activity compared to BiEuWO6, as evidenced from the photoelectrochemical and time-resolved fluorescence studies. The difference in the observed PC activity of these nanomaterials is also explored through a detailed comparison of crystal structure and electronic structure calculated through the density functional theory method.

Original languageEnglish
Pages (from-to)35875-35887
Number of pages13
JournalACS Applied Materials and Interfaces
Volume10
Issue number42
DOIs
Publication statusPublished - 24-10-2018

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Photocatalysis
Nanostructured materials
Electronic structure
Neutrons
Crystal structure
Congo Red
Rietveld refinement
Photocatalysts
Synchrotrons
Field emission
Rare earths
Distribution functions
Density functional theory
Raman spectroscopy
Coloring Agents
Dyes
Fluorescence
Irradiation
Spectroscopy
Transmission electron microscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Shanbogh, P. P., Raghunathan, R., Swain, D., Feygenson, M., Neuefeind, J., Plaisier, J., ... Sundaram, N. G. (2018). Impact of Average, Local, and Electronic Structure on Visible Light Photocatalysis in Novel BiREWO6 (RE = Eu and Tb) Nanomaterials. ACS Applied Materials and Interfaces, 10(42), 35875-35887. https://doi.org/10.1021/acsami.8b08452
Shanbogh, Pradeep P. ; Raghunathan, Rajamani ; Swain, Diptikanta ; Feygenson, Mikhail ; Neuefeind, Joerg ; Plaisier, Jasper ; Narayana, Chandrabhas ; Rao, Ashok ; Sundaram, Nalini G. / Impact of Average, Local, and Electronic Structure on Visible Light Photocatalysis in Novel BiREWO6 (RE = Eu and Tb) Nanomaterials. In: ACS Applied Materials and Interfaces. 2018 ; Vol. 10, No. 42. pp. 35875-35887.
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Shanbogh, PP, Raghunathan, R, Swain, D, Feygenson, M, Neuefeind, J, Plaisier, J, Narayana, C, Rao, A & Sundaram, NG 2018, 'Impact of Average, Local, and Electronic Structure on Visible Light Photocatalysis in Novel BiREWO6 (RE = Eu and Tb) Nanomaterials', ACS Applied Materials and Interfaces, vol. 10, no. 42, pp. 35875-35887. https://doi.org/10.1021/acsami.8b08452

Impact of Average, Local, and Electronic Structure on Visible Light Photocatalysis in Novel BiREWO6 (RE = Eu and Tb) Nanomaterials. / Shanbogh, Pradeep P.; Raghunathan, Rajamani; Swain, Diptikanta; Feygenson, Mikhail; Neuefeind, Joerg; Plaisier, Jasper; Narayana, Chandrabhas; Rao, Ashok; Sundaram, Nalini G.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 42, 24.10.2018, p. 35875-35887.

Research output: Contribution to journalArticle

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AU - Shanbogh, Pradeep P.

AU - Raghunathan, Rajamani

AU - Swain, Diptikanta

AU - Feygenson, Mikhail

AU - Neuefeind, Joerg

AU - Plaisier, Jasper

AU - Narayana, Chandrabhas

AU - Rao, Ashok

AU - Sundaram, Nalini G.

PY - 2018/10/24

Y1 - 2018/10/24

N2 - Crystal structures of hydrothermally synthesized BiEuWO6 and BiTbWO6 nanomaterials are deduced for the first time by combined Rietveld refinement of neutron and synchrotron data using the ordered and disordered models available in literature. The ordered model is validated for the average structure of these nanomaterials, and it is further supported by the local structure analysis using neutron pair distribution function. Nanomaterials are characterized by field-emission scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller surface area, diffused reflectance spectroscopy, and Raman Spectroscopy. Rare-earth-substituted nanomaterials are found to be efficient photocatalysts over the parent Bi2WO6 under visible light irradiation for Congo-red dye degradation. Particularly, BiTbWO6 shows an enhanced photocatalytic (PC) activity compared to BiEuWO6, as evidenced from the photoelectrochemical and time-resolved fluorescence studies. The difference in the observed PC activity of these nanomaterials is also explored through a detailed comparison of crystal structure and electronic structure calculated through the density functional theory method.

AB - Crystal structures of hydrothermally synthesized BiEuWO6 and BiTbWO6 nanomaterials are deduced for the first time by combined Rietveld refinement of neutron and synchrotron data using the ordered and disordered models available in literature. The ordered model is validated for the average structure of these nanomaterials, and it is further supported by the local structure analysis using neutron pair distribution function. Nanomaterials are characterized by field-emission scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller surface area, diffused reflectance spectroscopy, and Raman Spectroscopy. Rare-earth-substituted nanomaterials are found to be efficient photocatalysts over the parent Bi2WO6 under visible light irradiation for Congo-red dye degradation. Particularly, BiTbWO6 shows an enhanced photocatalytic (PC) activity compared to BiEuWO6, as evidenced from the photoelectrochemical and time-resolved fluorescence studies. The difference in the observed PC activity of these nanomaterials is also explored through a detailed comparison of crystal structure and electronic structure calculated through the density functional theory method.

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