高度水晶的类型锶氢磷酸盐(-SrHPO 4 ) nanosheets 被一个热水的方法准备并且为铅离子的固定使用了(Pb < 啜 class= “ a-plus-plus ” > 从酸的水的答案的 2+) 。包括解决方案 pH 价值,固定进程上的各种各样的参数的效果联系时间,起始的离子集中,和共存的竞争阳离子,被学习为最大的固定优化条件。-SrHPO 4 nanosheets 展出了一个能力(1,120?
Highly crystalline β-type strontium hydrogen phosphate (β-SrHPO4) nanosheets were prepared by a hydro- thermal method and used for the immobilization of lead ions (Pb2+) from acidic aqueous solution. The effects of various parameters on the immobilization process, including solution pH value, contact time, initial ion concentrations, and coexistent competing cations, were studied to optimize the conditions for maximum immobilization. The β-SrHPO4 nanosheets exhibited a capacity of (1,120 ± 22) mg/g toward Pb2+ in acidic solution (pH value is 3.0), and the equilibrium was achieved within 8 rain. The competing cations such as Cu2+, Zn2+, Cd2+, and Co2+ affected slightly on the selective immobilization of Pb2+. The results revealed that the removal mechanism of Pb2+ by the β-SrHPO4 nanosheets was the dissolution/precipitation process in the acidic solution.