Facile Synthesis of Ce–Doped SnO 2 Nanoparticles: A Promising Photocatalyst for Hydrogen Evolution and Dyes Degradation

Vinod Kumar, Bhawna, Sanjeev Kumar Yadav, Akanksha Gupta, Bhavna Dwivedi, Anup Kumar, Prashant Singh, Kalyanjyoti Deori

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

This report discussed the efficient hydrogen generation via water splitting and fast dye degradation pathway using Ce doped SnO 2 nanoparticles. One pot synthesis of Ce doped SnO 2 nanoparticles was carried out by a simple, convenient wet chemical method using H 2 O 2 and the product obtained was characterized using array of physico-chemical techniques. Powder X-ray diffraction confirmed the presence of rutile phase. Band gap for Ce:SnO 2 was found out to be 3.80 eV which is more than the pure SnO 2 (3.71 eV) and it is due to Moss-Burstein effect. EDAX analysis and elemental mapping support uniform distribution of 5% Ce and the SEM imaging depicts irregular shape of nanocrystallites. The doping of 5% Ce into the interstitial and lattice positions of SnO 2  nanoparticles was also confirmed by the X-ray photoelectron spectroscopy analysis. Raman measurement and photoluminescence analysis showed the presence of oxygen vacancies and disorderness in the nanoparticles. Photocatalytic water splitting proficiency was investigated using Ce doped SnO 2  nanomaterials in the presence of NiO as co-catalyst and other different sacrificial reagents such as methanol, Na 2 S-Na 2 SO 3 , EDTA ions, triethanolamine and in combinations. It was found that the evolution of H 2  is maximum i. e. 25 μmol/g/h in presence of as-synthesized catalyst, NiO (co-catalyst) along with EDTA and methanol as scavengers under UV light irradiation. Further, the degradation of methylene blue and methyl orange dyes was investigated under UV-Visible irradiation using Ce:SnO 2 NPs.

Original languageEnglish
Pages (from-to)3722-3729
Number of pages8
JournalChemistrySelect
Volume4
Issue number13
DOIs
StatePublished - 9 Apr 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • Co-catalyst
  • Doping
  • Oxygen Vacancies
  • Photocatalyst
  • Sacrificial agents

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