Tb3+ and Ce3+ Intercalated Laponite Powder: The Influence of Ce3+ Ions on Thermal Stability and Optical Properties of Tb3+ Intercalated Laponite 


Vol. 32,  No. 4, pp. 1273-1276, Apr.  2011
10.5012/bkcs.2011.32.4.1273


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  Abstract

Laponite samples intercalated with Tb3+ or Tb3+,Ce3+ ions were prepared by exchange of Na+ ions in interlayers with Tb3+ or Ce3+ ions. Strong green and weak blue emissions under vacuum ultraviolet (VUV) excitation (λ = 158 nm) were observed due to the 5D4→7FJ and 5D3→7FJ emission lines, respectively. Tb3+ ions in an interlayer of laponite mainly existed in ion pairs or clusters, as evidenced by the concentration-dependent luminescence of the Tb3+ ions on the relative intensities of the 5D3→7FJ and the 5D4→7FJ emission lines, due to the action of a cross-relaxation process. The addition of Ce3+ ions increased the thermal stability of Tb3+ intercalated laponite up to 650 oC and quenched the 5D3→7FJ emission lines, probably by promoting the formation of Tb3+ ion pairs at relatively low Tb3+ concentrations.

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  Cite this article

[IEEE Style]

H. N. Lee and Y. Kim, "Tb3+ and Ce3+ Intercalated Laponite Powder: The Influence of Ce3+ Ions on Thermal Stability and Optical Properties of Tb3+ Intercalated Laponite," Bulletin of the Korean Chemical Society, vol. 32, no. 4, pp. 1273-1276, 2011. DOI: 10.5012/bkcs.2011.32.4.1273.

[ACM Style]

Han Na Lee and Youhyuk Kim. 2011. Tb3+ and Ce3+ Intercalated Laponite Powder: The Influence of Ce3+ Ions on Thermal Stability and Optical Properties of Tb3+ Intercalated Laponite. Bulletin of the Korean Chemical Society, 32, 4, (2011), 1273-1276. DOI: 10.5012/bkcs.2011.32.4.1273.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949