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Preparation of Silica Gel G Loaded Nano-barium Titanate and Its Adsorption Capability to Zinc in Water
Corresponding Author(s) : Dong Zhang
Asian Journal of Chemistry,
Vol. 25 No. 6 (2013): Vol 25 Issue 6
Abstract
The silica gel G loaded nano-barium titanate (SBT) was prepared by citric acid complex sol-gel method and then its structure and adsorption capability to zinc ion in water were investigated. The results showed that the nano-barium titanate prepared sol-gel method could be steadily loaded on the surface of silica gel G to produce a cocoon particle adsorption material. This adsorbent had strong absorption capacity to zinc ion in water at pH 4-8 and the static absorption capacity was up to 43.5 mg/g. Zinc ion adsorbed to the adsorbent could be totally eluted by 0.5 mol/L nitric acid and then determined by flame atomic absorption spectrometry. The detection limit of this method was 0.5 μg/L. The RSD was 2.2 % for six independent adsorptions and determinations of zinc ion with initial concentration of 10 μg/L. The method has been applied to the enrichment and determination of trace zinc ion in water with the recovery of 94.9-105.6 %.
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References
State Environmental Protection Administration of China. Analysis Method of Water and Waste Water, China Environmental Science Press, Inc. Beijing, edn. 4 (2002).
H.D. Su and D. Zhang, J. Chem. Ind. Eng., 57, 2892 (2006).
D. Zhang, H.D. Su and H. Gao, Metal. Anal., 27, 7 (2007).
D. Zhang, H.D. Su and H. Gao, Spectrosc. Spect. Anal., 28, 218 (2008).
D. Zhang, Asian J. Chem., 24, 5219 (2012).
D. Zhang, W.J. Zhang, X. Guan, H. Gao and H.B. He, Spectrosc. Spect. Anal., 29, 824 (2009).
D. Zhang, Z.-G. Yuan, X. Guan, W.-J. Zhang, Rare Metal Mater. Eng., 38, 2207 (2009).
Y. Liu, P. Liang and L. Guo, Talanta, 68, 25 (2005).
Z. Wang, S.L. Jiang, G.X. Li, M.P. Xi and T. Li, Ceram. Int., 33, 1105 (2007).