从水溶液中选择性吸附Ga(III) 使用磁性酸盐基离子印记聚合物:合成优化和机械洞察力
Daoguang Teng1, Chenglin Liu2, Lukuan Ma2
1Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, China; The Key Lab of Critical Metals Minerals Supernormal Enrichment and Extraction, Ministry of Education, Zhengzhou 450001, China; School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China; Luoyang Industrial Technology Institute, Luoyang 471000, China.
International journal of biological macromolecules
|January 18, 2025
概括
一种基于奇托桑的新型磁性离子印记聚合物 (IIP) 能够高效地吸附 (Ga) 具有高选择性和可重复使用性. 这种具有成本效益的材料为从水溶液中去除Ga (III) 提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 分析化学 分析化学
背景情况:
- (III) (Ga) 的回收对各种行业至关重要.
- 开发有选择性和高效的吸附剂对于Ga (III) 提取至关重要.
- 基托基材料为吸附剂开发提供了一个可持续的平台.
研究的目的:
- 合成一种基于奇托的磁性离子印制聚合物 (IIP),用于选择性Ga(III) 吸附.
- 评估合成的IIP的吸附能力,选择性和可重复使用性.
- 阐明吸附机制和协调相互作用.
主要方法:
- 通过交联聚合合成磁性基托基IIP的合成.
- 批量吸附实验以确定Ga(III) 的吸附能力和选择性.
- 动力学,同热学和热力学研究,以了解吸附行为.
- 使用BET,FTIR和VSM等技术进行材料表征.
- 使用高斯和Multiwfn软件进行计算分析.
主要成果:
- 该IIP在pH4.0下显示了高Ga(III) 吸附能力,在pH4.0下达到434.00mg/g.
- 观察到Ga(III) 与Zn(II),Ge(IV和In(III) 相比具有很好的选择性.
- 吸附遵循伪二阶动力学和兰迈尔异热模型,表明化学吸附和单层吸附.
- 热力学研究表明一个有利的,内热吸附过程.
- 鉴定证实了高表面积,功能组和磁性质.
- 计算分析显示酸盐协调驱动选择性吸附.
- 在多个吸附-脱附周期后,IIP保持了高性能.
结论:
- 一种新的基于磁性酸盐的IIP成功合成,用于高效和选择性的Ga(III) 吸附.
- 该材料具有很高的吸附能力,优秀的选择性和显著的可重复使用性.
- 该研究提供了对吸附机制的见解,并强调了具有成本效益的Ga(III) 回收的潜力.
相关概念视频
Extraction: Advanced Methods
407
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
407
Ion-Exchange Chromatography
348
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
348


