Abstract：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.
刘艳,梁沛,郭丽,卢汉兵. 负载型纳米二氧化钛对重金属离子吸附性能的研究[J]. 化学学报, 2005, 63(4): 312-316.
LIU Yan,LIANG Pei*,GUO Li,LU Han-Bin. Study on the Adsorption Behavior of Heavy Metal Ions on Nanometer TiO2 Supported on Silica Gel. Acta Chimica Sinica, 2005, 63(4): 312-316.