Intermediate formation during photodegradation of phenol using lanthanum doped tin dioxide nanoparticles

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Lanthanum (La)-doped tin dioxide (SnO2) nanoparticles were synthesized by a modified sol–gel method at room temperature. The samples were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The photocatalytic activity of La:SnO2 samples were investigated by studying the degradation profile of phenol and its by-products in water. The treated samples were analyzed by HPLC–UV and a UV–Vis spectrophotometer. Benzoquinone, catechol, resorcinol, hydroquinone, acetic acid, and 2-propanol were identified as phenol degradation intermediates. Maximum concentration acquired was in the order of catechol, resorcinol, hydroquinone, and benzoquinone, which was observed in the beginning stages while iso-propanol and acetic acid were observed in the final stages of phenol degradation. We achieved a complete photodegradation of a 10 ppm aqueous phenol solution and intermediates with 0.6 % of SnO2:La nanoparticles in 120 min under artificial solar irradiation. A maximum degradation rate constant of 0.02228 min−1 of propanol and a minimum of acetic acid 0.013412 min−1 were recorded at 37 °C.

Original languageEnglish
JournalResearch on Chemical Intermediates
DOIs
Publication statusAccepted/In press - Aug 4 2015

Keywords

  • By-product
  • Lanthanum
  • Phenol
  • Photocatalysis
  • Rare earth metal
  • SnO<inf>2</inf>

ASJC Scopus subject areas

  • Chemistry(all)

Fingerprint Dive into the research topics of 'Intermediate formation during photodegradation of phenol using lanthanum doped tin dioxide nanoparticles'. Together they form a unique fingerprint.

Cite this