Covalent triazine-based framework: A promising adsorbent for removal of   perfluoroalkyl acids from aqueous solution

doi:10.1016/j.envpol.2016.06.062

CORC > 北京大学 > 城市与环境学院

	Covalent triazine-based framework: A promising adsorbent for removal of perfluoroalkyl acids from aqueous solution
	Wang, Bingyu ; Lee, Linda S. ; Wei, Chenhui ; Fu, Heyun ; Zheng, Shourong ; Xu, Zhaoyi ; Zhu, Dongqiang
刊名	ENVIRONMENTAL POLLUTION
	2016
关键词	Perfluoroalkyl acids (PFAAs) Covalent triazine-based framework (CTF) Adsorption Electrostatic interaction Nanosized pore WATER TREATMENT PLANTS PERFLUOROOCTANE SULFONATE PERFLUORINATED SURFACTANTS ACTIVATED CARBON WASTE-WATER PERFLUOROCARBOXYLIC ACIDS AROMATIC-COMPOUNDS MASS-SPECTROMETRY ADSORPTION SORPTION
DOI	10.1016/j.envpol.2016.06.062
英文摘要	Perfluoroalkyl acids (PFAAs) are highly stable, persistent, and ubiquitous in the environment with significant concerns growing with regards to both human and ecosystem health. Due to the high stability to both biological and chemical attack, the only currently feasible approach for their removal from water is adsorbent technology. The main objective of this study was to assess a covalent triazine-based framework (CTF) adsorbent for removal from aqueous solutions of perfluoro C4, C6, and C8 carboxylates and sulfonates including the two C8s most commonly monitored, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). Adsorption affinity and capacity were quantified and compared to three commonly used sorbents: pulverized microporous activated carbon, single-walled carbon nanotubes, and Amberlite IRA-400 anion-exchange resin. CTF adsorbent exhibited pronouncedly higher adsorption affinity and capacity of PFAAs than other test sorbents. The remarkably strong adsorption to CTF can be attributed to the favored electrostatic interaction between the protonated triazine groups on the inner wall of the hydrophobic Cif pore and the negatively charged head groups of the PFAAs intercalated between the CTF layers. The homogeneous, nanosized pores (1.2 nm) of CTF hindered adsorption of a large-sized dissolved humic acid, thus minimizing the suppression of PFAA adsorption. Additionally, regeneration of CTF was easily accomplished by simply raising pH > 11, which inhibited the electrostatic adsorptive interaction of PFAAs. (C) 2016 Published by Elsevier Ltd.; National Key Basic Research Program of China [2014CB441103]; National Natural Science Foundation of China [21237002, 21225729, 21428701]; SCI(E); EI; PubMed; ARTICLE; zhud@pku.edu.cn; 884-892; 216
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/493524]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Wang, Bingyu,Lee, Linda S.,Wei, Chenhui,et al. Covalent triazine-based framework: A promising adsorbent for removal of perfluoroalkyl acids from aqueous solution[J]. ENVIRONMENTAL POLLUTION,2016.
APA	Wang, Bingyu.,Lee, Linda S..,Wei, Chenhui.,Fu, Heyun.,Zheng, Shourong.,...&Zhu, Dongqiang.(2016).Covalent triazine-based framework: A promising adsorbent for removal of perfluoroalkyl acids from aqueous solution.ENVIRONMENTAL POLLUTION.
MLA	Wang, Bingyu,et al."Covalent triazine-based framework: A promising adsorbent for removal of perfluoroalkyl acids from aqueous solution".ENVIRONMENTAL POLLUTION (2016).