基于聚氨的阴离子多孔有机聚合物,用于快速有效的阴离子交换驱动的Cr捕获2O72
Long Pan1,2, Zilu Liu3, Marcos Villeda Hernandez1
1School of Chemistry, University of Bristol, Bristol, England BS8 1TS, U.K.
ACS applied polymer materials
|June 21, 2024
概括
一种新型的阴阳性多孔有机聚合物 (PTPA-PIP) 有效地从废水中去除致癌六价 (Cr(VI)). 这种高效且可重复使用的材料为工业用水处理应用提供了有前途的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 废水中六价 (Cr(VI)) 的污染对环境和健康构成重大风险.
- 使用纳米材料的离子交换是有效去除CrVI的有希望的策略.
研究的目的:
- 开发和表征一种新型的阴性多孔有机聚合物 (POP),用于有效地从废水中去除CrVI.
- 在吸附能力,去除率,选择性和可重复使用性方面评估开发的POP的性能.
主要方法:
- 通过芳香聚胺 (PTPA) 的质子化合成阴阳性多孔有机聚合物 (PTPA-PIP).
- 使用FTIR,XPS,BET和固态NMR进行物理化学表征.
- 吸附实验评估Cr (VI) 去除性能,包括容量,动力学,选择性和可重复使用性.
主要成果:
- PTPA-PIP具有很高的水友性和水分散性.
- 在二酸盐离子中达到230mg Cr2O7 2-/g PTPA-PIP的最大吸附能力.
- 证明了超快速去除,最初的吸附率为83毫克g-1分-1.
- 在不降低性能的情况下,至少在5个周期内展示了出色的选择性和可重复使用性.
结论:
- PTPA-PIP是一种高效且可重复使用的材料,用于从废水中去除低度Cr (VI).
- 它的卓越性能使其成为工业废水处理应用的优秀候选者.
- 该研究强调了定制POPs在应对具有挑战性的环境污染物的潜力.
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