Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (4): 312-316. Previous Articles     Next Articles

Original Articles

负载型纳米二氧化钛对重金属离子吸附性能的研究

刘艳,梁沛*,郭丽,卢汉兵   

  1. (华中师范大学化学学院 武汉 430079)
  • 收稿日期:2004-04-22 修回日期:2004-11-01 出版日期:2005-02-28 发布日期:2010-12-10
  • 通讯作者: 梁沛

Study on the Adsorption Behavior of Heavy Metal Ions on Nanometer TiO2 Supported on Silica Gel

LIU Yan,LIANG Pei*,GUO Li,LU Han-Bin   

  1. (College of Chemistry, Central China Normal University, Wuhan 430079)
  • Received:2004-04-22 Revised:2004-11-01 Online:2005-02-28 Published:2010-12-10
  • Contact: LIANG Pei

Nanometer TiO2 supported on silica gel (supported nanometer TiO2) was prepared by Sol-Gel method. The product was characterized using XRD and SEM. The adsorption behavior of supported nanometer TiO2 towards Cd2+, Cr3+, Cu2+and Mn2+ was investigated by ICP-AES. It was found that the adsorption percentages of the metal ions studied were more than 90% in pH 8.0~9.0, and 0.5 mol/L HNO3 was sufficient for complete elution. The adsorption capacity of supported nanometer TiO2 for Cd2+, Cr3+, Cu2+and Mn2+ was found to be 8.3, 13.1, 12.6 and 5.1 mg/g, respectively. A method using supported nanometer TiO2 as adsorbent coupled with ICP-AES has been developed for the separation/preconcentration and determination of Cd2+, Cr3+, Cu2+and Mn2+in environmental sample.

Key words: sol-gel method, supported nanometer TiO2, adsorption, heavy metal ion, ICP-AES