Egg white synthesis and photoluminescence of platelike clusters of CeO 2 nanoparticles

Santi Maensiri, Chivalrat Masingboon, Paveena Laokul, Wirat Jareonboon, Vinich Promarak, Philip L. Anderson, Supapan Seraphin

Research output: Contribution to journalArticle

197 Citations (Scopus)

Abstract

This paper reports the synthesis of platelike CeO2 nanoparticles by a simple, cost-effective, and environmentally friendly method using cerium(III) acetate hydrate and freshly extracted egg white (ovalbumin) in an aqueous medium. A platelike structure of CeO2 nanoparticles having the particle size of 6-30 nm was obtained by calcining the precursors in air at 400, 500, and 600°C, for 2 h. Results from XRD, Raman spectroscopy, and SAED analysis indicated that the synthesized CeO2 nanoparticles have the fluorite structure of the bulk CeO2. All samples show a strong UV-vis absorption below 400 nm (3.10 eV) with a well-defined absorbance peak at around 284 nm (4.37 eV). The estimated direct band gaps are 3.61, 3.59, and 3.57 eV for the samples calcined at 400, 500, and 600°C, respectively. These band gaps are 0.42, 0.40, and 0.38 eV higher than that of bulk CeO2, indicating the quantum confinement effect of the nanosize particles. The 400 and 500°C calcined samples exhibited similar emission peaks of room-temperature photoluminescence. However, the sample calcined at 600°C exhibited the strongest UV emission band at 392 nm (3.17 eV) because of its better-defined crystallinity compared to the other two samples calcined at 400 and 500°C.

Original languageEnglish (US)
Pages (from-to)950-955
Number of pages6
JournalCrystal Growth and Design
Volume7
Issue number5
DOIs
StatePublished - May 2007

Fingerprint

eggs
Photoluminescence
Nanoparticles
photoluminescence
nanoparticles
Energy gap
synthesis
Cerium
Quantum confinement
Fluorspar
Ovalbumin
Hydrates
Raman spectroscopy
Acetates
Particle size
fluorite
cerium
hydrates
acetates
Air

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Maensiri, S., Masingboon, C., Laokul, P., Jareonboon, W., Promarak, V., Anderson, P. L., & Seraphin, S. (2007). Egg white synthesis and photoluminescence of platelike clusters of CeO 2 nanoparticles. Crystal Growth and Design, 7(5), 950-955. https://doi.org/10.1021/cg0608864

Egg white synthesis and photoluminescence of platelike clusters of CeO 2 nanoparticles. / Maensiri, Santi; Masingboon, Chivalrat; Laokul, Paveena; Jareonboon, Wirat; Promarak, Vinich; Anderson, Philip L.; Seraphin, Supapan.

In: Crystal Growth and Design, Vol. 7, No. 5, 05.2007, p. 950-955.

Research output: Contribution to journalArticle

Maensiri, S, Masingboon, C, Laokul, P, Jareonboon, W, Promarak, V, Anderson, PL & Seraphin, S 2007, 'Egg white synthesis and photoluminescence of platelike clusters of CeO 2 nanoparticles', Crystal Growth and Design, vol. 7, no. 5, pp. 950-955. https://doi.org/10.1021/cg0608864
Maensiri S, Masingboon C, Laokul P, Jareonboon W, Promarak V, Anderson PL et al. Egg white synthesis and photoluminescence of platelike clusters of CeO 2 nanoparticles. Crystal Growth and Design. 2007 May;7(5):950-955. https://doi.org/10.1021/cg0608864
Maensiri, Santi ; Masingboon, Chivalrat ; Laokul, Paveena ; Jareonboon, Wirat ; Promarak, Vinich ; Anderson, Philip L. ; Seraphin, Supapan. / Egg white synthesis and photoluminescence of platelike clusters of CeO 2 nanoparticles. In: Crystal Growth and Design. 2007 ; Vol. 7, No. 5. pp. 950-955.
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