Efficient Photocatalytic degradation of direct blue 15 dye using samarium doped bismuth tungstate nanosheets: A sustainable approach towards wastewater treatment

Sivaraj D, Ramachandran K, Sudhakar K, Arulraj A, R. V. Mangalaraja, Srinivasan M, Senthil Pandian M, Juan F. Vivanco, Ramasamy P

Research output: Contribution to journalArticlepeer-review

Abstract

The rare earth metal, samarium (Sm3+) doped bismuth tungstate (Bi2WO6) nanoparticles were prepared by a one-pot hydrothermal method. The powder X-ray diffraction (XRD) analysis confirmed the formation of Bi2WO6 with an orthorhombic crystal structure. The crystallite size of Bi2WO6 decreased from 20.73 to 9.25 nm as the Sm substitution in the W lattice increased. The vibrational modes of W–O, Bi–O, and Sm–O were identified in the range of 500–900 cm−1. The optical bandgap of Sm3+ doped Bi2WO6 nanoparticles increased from 2.86 to 2.95 eV with higher Sm doping levels. The surface morphology revealed the formation of flower-like sheets in the Sm3+ doped bismuth tungstate. The energy dispersive X-ray (EDX) spectrum of Sm3+ doped Bi2WO6 nanoparticles confirmed the presence of Sm, Bi, W, and O without any other impurities. The small peak detected at 1082.14 eV in the survey scan of Sm3+ doped Bi2WO6 nanoparticles belonged to Sm3d. In the photocatalytic degradation of direct blue 15 (DB15) under visible light irradiation, the efficiency of the nanoparticles increased with higher Sm3+ concentration. The obtained results demonstrated that the Sm–Bi2WO6 nanosheets could provide an effective and sustainable solution for treating the wastewater containing direct blue 15 dye.

Original languageEnglish
Article number140414
JournalChemosphere
Volume345
DOIs
StatePublished - Dec 2023
Externally publishedYes

Keywords

  • Bismuth tungstate
  • Hydrothermal
  • Photocatalytic activity
  • Samarium
  • Wastewater treatment

Fingerprint

Dive into the research topics of 'Efficient Photocatalytic degradation of direct blue 15 dye using samarium doped bismuth tungstate nanosheets: A sustainable approach towards wastewater treatment'. Together they form a unique fingerprint.

Cite this