Synthesis, Characterization and Properties of CeO2-doped TiO2 Composite Nanocrystals

  • Oman ZUAS Research Centre for Chemistry, Indonesian Institute of Sciences (RCChem-LIPI) Kawasan PUSPIPTEK Serpong, 15314, Tangerang, Banten, Indonesia
  • Nuryatini HAMIM Research Centre for Chemistry, Indonesian Institute of Sciences (RCChem-LIPI) Kawasan PUSPIPTEK Serpong, 15314, Tangerang, Banten, Indonesia
Keywords: TiO2, CeO2, metal oxide, nanocrystal, synthetic dye

Abstract

Pure TiO2 and CeO2-doped TiO2 (3 % CeO2-97 %TiO2) composite nanocrystals were synthesized via co-precipitation method and characterized using TGA, XRD, FTIR, DR-UV-vis and TEM. The XRD data revealed that the phase structure of the synthesized samples was mainly in pure anatase having crystallite size in the range of 7 nm11 nm. Spherical shapes with moderate aggregation of the crystal particles were observed under the TEM observation. The presence of the CeO2 at TiO2 site has not only affected morphologically but also induced the electronic property of the TiO2 by lowering the band gap energy from 3.29 eV (Eg-Ti) to 3.15 eV (Eg-CeTi). Performance evaluation of the synthesized samples showed that both samples have a strong adsorption capacity toward Congo red (CR) dye in aqueous solution at room temperature experiment, where  the capacity of the CeTi was higher than the Ti sample. Based on DR-UV data, the synthesized samples obtained in this study may also become promising catalysts for photo-assisted removal of synthetic dye in aqueous solution.

DOI: http://dx.doi.org/10.5755/j01.ms.19.4.2732

Published
2013-12-11
Section
CERAMICS AND GLASSES