在酸盐上的选择性吸附是通过过渡金属交叉连接的奇多来实现的
Lauren N Pincus1,2,3, Predrag V Petrović1,3, Isabel S Gonzalez4
1Yale University, School of Forestry and Environmental Studies, 195 Prospect St., New Haven, CT 06511, United States.
概括
铁 (III) - 酸盐选择性地吸附物种 ( (III) 和 (V)) 而不是酸盐. 这项研究合成并测试了各种过渡金属酸盐复合物 (TMCs) 用于去除.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 水中的污染对健康构成重大风险.
- 酸盐是吸附过程中常见的竞争对手.
- 过渡金属酸盐复合物 (TMCs) 显示出吸附性去除污染物的潜力.
研究的目的:
- 评估各种TMC对酸盐的选择性吸附 (III) 和 (V).
- 研究合成TMCs的结构性质和复杂化机制.
- 为了确定在酸盐的存在下去除的最有效的TMC.
主要方法:
- 使用ATR-FTIR和XRD合成和表征Fe(III) -,Al(III) -,Ni(II) -,Cu(II) -和Zn(II) -色素复合物.
- 在酸盐的存在下对 (III) 和 (V) 的选择性吸附能力的评估.
- 密度功能理论 (DFT) 建模和扩展的X射线吸附细结构 (EXAFS) 的应用,以确定复杂化机制.
主要成果:
- 铁 (III) - 基托表明选择性吸附亚 (V) 和亚 (III) 在酸盐上.
- 三和二形成了不稳定的复合物,而二,二和三形成了稳定的单和双复合物.
- 通过Fe (III) -和Ni (II) -色素的内部球体复合,与通过Cu (II) -色素的外部球体复合相比,有助于更高的吸附亲和度.
结论:
- 铁 (III) - 基托桑是含水中的物种的高度选择性吸附剂.
- 复杂化的类型 (内部球与外部球) 显著影响吸附效率.
- TMCs为开发有效的修复技术提供了一个有希望的途径.
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