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Chem. J. Chinese Universities

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Synthesis and Characterization of Titanate and CS2-modified Titanate Nanotubes as Well as Their Adsorption Capacities for Heavy Metal Ions

AN Hui-Qin, ZHU Bao-Lin, WU Hong-Yan, ZHANG Ming, WANG Shu-Rong, ZHANG Shou-Min, WU Shi-Hua, HUANG Wei-Ping*   

  1. Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:2007-07-23 Revised:1900-01-01 Online:2008-03-10 Published:2008-03-10
  • Contact: HUANG Wei-Ping

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Abstract: CS2-modified titanate nanotubes were synthesized by tubular titanate precursor via hydrothermal method. They were characterized with XRD, EDAX, TEM and Raman spectra. Adsorption capacity of the nanotubes for heavy metal ions, such as Cu2+, Pb2+ and Ag+ ions in water were also evaluated. Compared with ordinary sorbents, the nanotubes’ adsorption performance are much better. The nanotubes’ adsorption capacities increase apparently after being modified by CS2, and their adsorption performance is related to the anions and pH value of the solution. The adsorption capacities of pure titanate nanotubes for Pb2+, Ag+ and Cu2+ ions are 599.37, 163.22 and 474.73 mg/g, respectively. After being modified by CS2, the adsorption capacities of the nanotubes changed to 663.37, 160.21 and 423.05 mg/g, respectively.

Key words: Titanate nanotubes, CS2, Heavy metal ion, Ion-exchange

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