アミン機能化された共性有機枠組による水からのGenXとアルキル含有物の除去
Woojung Ji1, Leilei Xiao1,2, Yuhan Ling3
1Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States.
Journal of the American Chemical Society
|September 27, 2018
まとめ
原始アミンを含んだ新しい共性有機フレームワークは,有害なアルキル化合物 (PFAS) を水から効率的に除去します. これらの有望な吸着剤は,広範囲にわたるPFAS汚染に対する潜在的な解決策を提供します.
科学分野:
- 環境化学
- 材料科学
- ナノテクノロジー
背景:
- ペル・およびポリフッ化アルキル物質 (PFAS) は,水源における持続的地球汚染物質である.
- 現在のPFAS除去技術は,コストと性能の制限に直面しています.
- コヴァレント有機フレームワーク (COF) は,高表面積と調節可能なアドソープション特性を提供します.
研究 の 目的:
- PFASを除去するための原始アミンの2DCOFの可能性を調査する.
- COF構造とGenX吸収効率の関係を理解する.
- PFASの修復のためのCOF吸着剤の最適化のための設計基準を特定する.
主な方法:
- 主要アミンの組み込みが異なるイミン結合2DCOFの合成
- GenXと13のPFASのパネルを用いた環境関連濃度での吸収実験.
- COFの特性と吸収運動と容量の分析
主要な成果:
- 部分的なアミンを組み込んだCOFは,GenXの迅速な吸収を示した.
- COFにおける最適のアミン負荷 (28%) は,GenXの高い容量と迅速な除去につながった.
- 研究のCOFは,テストされた13のPFASのうち12の90%以上を除去しました.
- 極性アミン群と水害性COF表面の間の相乗効果は,PFAS結合を強化する.
結論:
- 主要アミンを含んだイミン結合2DCOFは,GenXや他のPFASにとって非常に効果的な吸着剤である.
- 部分的なアミンの組み込みと特定の表面化学は,吸着剤の性能を最大化するための鍵です.
- COFは,先進的なPFASの水処理技術を開発するための有望な材料のクラスです.
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