Paper Title:
Stability Analysis of Nano-Sized Titanium Dioxide in Aqueous Environment
  Abstract

Nano-sized titanium dioxide in aquatic environment poses potential impact on environment and human health. In this research, the impact of pH value, humic acid (HA) and divalent cations (Ca2+) on the stability of titanium dioxide nanoparticles(NPs) in the aqueous enviorment was investigated using a batch test. The results showed that the particle size of TiO2 NPs was not sensitive to the pH value but presented inversely proportional to zeta potential. The TiO2 NPs become more stable along with surface zeta potential, accompany with small particle size and high dispersion. In the presence of HA, the particle size was smaller and TiO2 NPs could be stabilized. This might be synergistic effect of the ligand exchange and electrostatic force. Meanwhile, NPs particle size increased with the addition of Ca2+ and the stability of TiO2 NPs became decreased.

  Info
Periodical
Advanced Materials Research (Volumes 374-377)
Chapter
Chapter 4: Water Purification and Wastewater Treatment
Edited by
Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du
Pages
869-874
DOI
10.4028/www.scientific.net/AMR.374-377.869
Citation
X. N. Yang, F. Y. Cui, X. Y. Mu, Z. W. Zhao, "Stability Analysis of Nano-Sized Titanium Dioxide in Aqueous Environment", Advanced Materials Research, Vols. 374-377, pp. 869-874, 2012
Online since
October 2011
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Price
$35.00
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