Photocatalytic degradation of phenol by iodine doped tin oxide nanoparticles under UV and sunlight irradiation

Abdullah M. Al-Hamdi, Mika Sillanpää, Joydeep Dutta

Research output: Contribution to journalArticlepeer-review

73 Citations (Scopus)


Iodine doped tin oxide (SnO2:I) nanoparticles were prepared by sol-gel synthesis and their photocatalytic activities with phenol as a test contaminant were studied. In the presence of the catalysts, phenol degradation under direct sunlight was comparable to what was achieved under laboratory conditions. Photocatalytic oxidation reactions were studied by varying the catalyst loading, light intensity, illumination time, pH of the reactant and phenol concentration. Upon UV irradiation in the presence of SnO2:I nanoparticles, phenol degrades very rapidly within 30 min, forming carboxylic acid which turns the solution acidic. Phenol degradation rate with 1% iodine doped SnO2nanoparticles is at least an order of magnitude higher compared to the degradation achieved through undoped SnO2nanoparticles under similar illumination conditions.

Original languageEnglish
Pages (from-to)366-371
Number of pages6
JournalJournal of Alloys and Compounds
Publication statusPublished - 5 Jan 2015
Externally publishedYes


  • Nanoparticle
  • Phenol degradation
  • Photocatalysis
  • Tin oxide Sol-gel process
  • Visible light

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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