Preparation and Characterization of Nanosized Barium-strontium Titanate Immobilized on Aluminum oxide and Its Application in Adsorption
Nanometer barium-stroutium titanate immobilized on aluminum oxide (ABST) was prepared by the citric acid sol-gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectrophotometry (FTIR). Its Pb2+ and Cd2+ adsorption properties from water were studied. Adsorption and elution were investigated under different conditions. The results showed that the nanometer barium-strontium titanate was immobilized on aluminum oxide firmly, becoming a composite adsorbent. The lead and cadmium ions were quantitatively retained at pH 5-8; their adsorption capacities of ABST were 70.28 mg g-1 and 8.12 mg g-1, respectively. The adsorbent of adsorped lead and cadmium ions were regenerated completely by elution with 1 mol-L-1 HNO3. The adsorbent had a promising prospect in analyticl chemistry and water treatment.
Keywords Nanosized barium-strontium titanate aluminum oxide Immobilized heavy metals adsorption
Dong Zhang Chunli Zhang
School of Environmental and Chemical Engineering, Shenyang Ligong University,Shenyang 110159, P. R. Xi zang University, Lasa, 850000, P. R. China
国际会议
2010 International Conference on Advanced Mechanical Engineering(2010年先进机械工程国际学术会议 AME 2010)
洛阳
英文
682-685
2010-09-04（万方平台首次上网日期，不代表论文的发表时间）