双模板离子打印的半孔膜用于 Nd 的选择性吸附 (III)
Wenjing Li1, Wenchao Xiang2, Liangrong Yang2
1China University of Mining & Technology, Beijing, 100083, China; State Key Laboratory of Petroleum Molecular & Process Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
Environmental research
|February 4, 2026
概括
新的双模板离子印制半孔膜 (IMM) 从废水中有效地回收新 (Nd3+). 这些膜具有很高的选择性和吸附能力,有助于环境保护和资源回收.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 分离科学 分离科学
背景情况:
- 稀土元素,如新 (Nd3+),对于高科技应用至关重要.
- 废水被3+污染会给环境和健康带来风险.
- 从废水中回收3+的有效方法对于可持续性至关重要.
研究的目的:
- 开发双模板离子印记介质孔膜 (IMM) 用于选择性 Nd3+ 吸附.
- 在各种条件下研究IMM的吸附性能.
- 评估IMM对于从工业废水中去除3+的实际适用性.
主要方法:
- 使用基纳米晶和3+作为模板,通过直接共聚合和蒸发诱导的自我组装来制造IMM.
- 描述IMM的结构性质,包括毛孔大小和表面积.
- 通过改变pH值,初始离子度,吸附时间和温度来系统地评估吸附性能.
主要成果:
- IMM表现出高的特定表面积 (221.30 m2·g-1) 和平均孔隙大小 (11.20 nm).
- 3+的最大吸附能力在pH 5和25°C时达到117mg·g-1 .
- 对3+与其他金属离子 (SF>15) 具有很高的选择性,并有效地从工业废水中去除.
结论:
- 开发的IMM显示出Nd3+的优异吸附能力和选择性.
- 吸附过程遵循兰格穆尔等温和和伪二阶动力学,表明具有外热性质.
- 由于易于准备和收集,IMM对于大规模的Nd3+回收非常实用.
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