2018
DOI: 10.1360/n032018-00126
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Effect of ultrasonic time on adsorption of Eu(III) by nano structured hematite and its mechanism

Abstract: 米结构化赤铁矿相比, 超声1 h得到的赤铁矿(PCH-3)具有最大的比表面积(29.37 m 2 /g). 批实验结果表明, T=288 K, pH 5.5时PCH-3对Eu(III)的吸附具有最大的速率常数(K 2 =3.49 g/(mg min))和容量(4.88 mg/g). X射线光电子能谱 (XPS)分析证实, 含氧官能团(特别是羟基)是纳米结构化赤铁矿富集Eu(III)的主要吸附位点. 而且适当的超声处理 可显著提高纳米结构化赤铁矿表面反应性. 该研究对矿物纳米结构化材料吸附重金属离子提供了重要的理论 依据.

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