Enhanced UV and visible light - Driven photocatalytic degradation of tartrazine by nickel-doped cerium oxide nanoparticles

Shah Raj Ali, Rajesh Kumar, Sharanappa K. Kadabinakatti, Mahesh Chandra Arya

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Nickel-doped cerium oxide nanoparticles were synthesized via a simple aqueous co-precipitation method. The synthesized nanoparticles were thoroughly characterized by PXRD, TEM, SEM, EDX, Raman, and UV-vis spectroscopic techniques. XRD study revealed the formation of nanoparticles in their pure phase with fluorite structure. EDX confirmed the doping of nickel in the cerium oxide lattice. The shift in Raman spectra revealed the formation of a solid solution on doping Ni- to CeO2. SEM images revealed considerable agglomeration. TEM analysis asserted the average particle size of 8-10 nm with a well defined spherical shape. The particle size was found to be sensitive to dopant concentration i.e., it decreased with increase in the concentration of the dopant. A comparative UV-visible spectroscopic analysis showed the remarkable red shift in the band gap of nickel-doped cerium oxide nanoparticles. Investigation of photocatalytic activity towards degradation of azo dye tartrazine showed that 3 mol% and 5 mol% Ni- CeO2 nanoparticles exhibited 53.4% and 63.7% photodegradation respectively under visible irradiation while 57.4% and 65.4% respectively under UV irradiation. The study suggests that band gap of cerium oxide nanoparticles can be easily tuned (decreased) by doping of nickel at different concentrations. The observed improved photocatalytic activity upon Nickel doping is attributed to the narrow band gap.

Original languageEnglish
Article number025513
JournalMaterials Research Express
Volume6
Issue number2
DOIs
Publication statusPublished - 01-02-2019

Fingerprint

Tartrazine
Cerium
Nickel
Doping (additives)
Nanoparticles
Degradation
Oxides
Energy gap
Energy dispersive spectroscopy
Azo Compounds
Particle size
Irradiation
Transmission electron microscopy
Scanning electron microscopy
Spectroscopic analysis
Azo dyes
Fluorspar
Photodegradation
Coprecipitation
ceric oxide

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Ali, Shah Raj ; Kumar, Rajesh ; Kadabinakatti, Sharanappa K. ; Arya, Mahesh Chandra. / Enhanced UV and visible light - Driven photocatalytic degradation of tartrazine by nickel-doped cerium oxide nanoparticles. In: Materials Research Express. 2019 ; Vol. 6, No. 2.
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Enhanced UV and visible light - Driven photocatalytic degradation of tartrazine by nickel-doped cerium oxide nanoparticles. / Ali, Shah Raj; Kumar, Rajesh; Kadabinakatti, Sharanappa K.; Arya, Mahesh Chandra.

In: Materials Research Express, Vol. 6, No. 2, 025513, 01.02.2019.

Research output: Contribution to journalArticle

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