一制备分层双氧化物工程酸根和在废水中应用
Fengrong Zhang1, Cuilan Zhang2, Kaixuan Zhang1
1School of Chemistry and Chemical Engineering, Heze University, Heze 274015, China.
Molecules (Basel, Switzerland)
|July 13, 2024
概括
层状双氧化物 (LDHs) 与酸盐离子 (BA-LDHs) 间隔,有效地从废水中去除,铜和等重金属,以及甲蓝色染料. 这种吸附剂对环境修复和开发选择性去除策略有前途.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学 化学 化学
背景情况:
- 重金属和有机污染物污染水体,造成严重的环境和健康风险.
- 有效的吸附剂对于可持续的废水处理至关重要.
- 阳离子交织层状双氧化物 (LDHs) 显示出消除污染物的潜力.
研究的目的:
- 为了合成和表征一种新型的酸盐间接层状双氧化物 (BA-LDHs) 复合物.
- 评估BA-LDHs对重金属离子和有机染料的吸附性能.
- 为了研究吸附机制和动力学.
主要方法:
- 使用化,化和五酸四水合物的一步热水合成BA-LDHs.
- 使用X射线粉微波测量 (XRD),扫描电子显微镜 (SEM),里埃变换红外光谱学 (FT-IR) 和布鲁纳尔-埃梅特-泰勒 (BET) 分析进行了表征.
- 吸附实验以确定Cd (II),Cu (II),Cr (VI) 和甲蓝 (MB) 的容量和动力学.
主要成果:
- 证实了B5O8-离子成功插入LDH结构的证实.
- BA-LDHs的最大吸附能力为Cd (II) 的18.7 mg·g-1,Cu (II) 的57.5 mg·g-1,Cr (VI) 的70.2 mg·g-1,甲蓝的3.12 mg·g-1.
- 吸附数据与Langmuir和Freundlich模型以及伪二阶动力学相匹配.
结论:
- 合成的BA-LDHs显示出作为有效吸附剂的巨大潜力,用于从废水中去除重金属和染料.
- 该研究提供了一种可行的策略,用于设计基于间隔LDHs的选择性吸附剂.
- BA-LDH为环境修复应用提供了一个有前途的解决方案.
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