High-Energy Electron-Beam-Induced Evolution of Secondary Phase and Enhanced Photocatalytic Activity in Monoclinic BiEuWO 6 Nanoparticles

Pradeep P. Shanbogh, V. C. Petwal, J. Dwivedi, Ashok Rao, Nalini G. Sundaram

Research output: Contribution to journalArticle

Abstract

A hydrothermally synthesized monoclinic phase of BiEuWO 6 photocatalyst nanoparticles was irradiated with variable doses of high-energy electron beam irradiation (EBI). Structural and morphological changes in unirradiated (referred to as control) and electron-beam-irradiated (referred to as EBI) nanoparticles were characterized by X-ray diffraction, Raman spectroscopy, and field emission scanning electron microscopy. At 50 kGy dose, evolution of a small fraction of a crystalline secondary orthorhombic phase along with a primary monoclinic phase is observed. This is further confirmed by X-ray diffraction as well as Raman spectroscopy. Single-phase and multiphase Rietveld refinements were carried out on the powder X-ray data of the control and EBI samples, and the phase fractions were deduced. Further diffused reflectance spectroscopy, steady-state fluorescence emission spectroscopy, and Brunauer-Emmett-Teller surface area were used to characterize the samples. A significant increase in the visible light photocatalytic activity is observed in the two-phase nanomaterials above an optimum dose of 50 kGy for the degradation of Congo red dye. The structural and morphological implications are investigated in detail to understand the enhancement in the photocatalytic activity of the EBI samples. This work demonstrates the potential of high-energy electron beam irradiation for development of superior crystalline semiconductor photocatalysts.

Original languageEnglish
Pages (from-to)10881-10892
Number of pages12
JournalJournal of Physical Chemistry C
Volume123
Issue number17
DOIs
Publication statusPublished - 02-05-2019

Fingerprint

high energy electrons
Electron beams
electron beams
Nanoparticles
nanoparticles
Irradiation
irradiation
Photocatalysts
dosage
Raman spectroscopy
Crystalline materials
Congo Red
X ray diffraction
Rietveld refinement
x rays
Fluorescence spectroscopy
Emission spectroscopy
diffraction
Nanostructured materials
Field emission

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Shanbogh, Pradeep P. ; Petwal, V. C. ; Dwivedi, J. ; Rao, Ashok ; Sundaram, Nalini G. / High-Energy Electron-Beam-Induced Evolution of Secondary Phase and Enhanced Photocatalytic Activity in Monoclinic BiEuWO 6 Nanoparticles. In: Journal of Physical Chemistry C. 2019 ; Vol. 123, No. 17. pp. 10881-10892.
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High-Energy Electron-Beam-Induced Evolution of Secondary Phase and Enhanced Photocatalytic Activity in Monoclinic BiEuWO 6 Nanoparticles. / Shanbogh, Pradeep P.; Petwal, V. C.; Dwivedi, J.; Rao, Ashok; Sundaram, Nalini G.

In: Journal of Physical Chemistry C, Vol. 123, No. 17, 02.05.2019, p. 10881-10892.

Research output: Contribution to journalArticle

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