Metal-organic framework DUT-67 (Zr) for adsorptive removal of trace Hg2+ and CH3Hg+ in water

被引：21

作者：

Chen, Sha ^{[1
]}

Feng, Fan ^{[1
]}

Li, Sumei ^{[1
]}

Li, Xiao-Xin ^{[1
]}

Shu, Lun ^{[2
,3
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Beijing Reg Air Pollut Control, Beijing, Peoples R China

[2] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing, Peoples R China

[3] Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Beijing, Peoples R China

来源：

CHEMICAL SPECIATION AND BIOAVAILABILITY | 2018年 / 30卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Metal organic framework; mercury ions; methylmercury ions; adsorption; X-RAY-ABSORPTION; EFFICIENT REMOVAL; AQUEOUS-SOLUTION; MERCURY TOXICITY; HIGHLY EFFICIENT; BINDING; HG(II); IONS; MOF; CONSTRUCTION;

D O I：

10.1080/09542299.2018.1509020

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A Zr-based stable metal-organic frameworks DUT-67 (Zr) was successfully synthesized as an adsorbent to remove trace mercury and methylmercury ions in aqueous solution. The removal efficiency of 90% and 55% of Hg2+ and CH3Hg+ was respectively achieved at pH 6 and 55 degrees C. The S in thiophene has a relatively weak adsorption capacity for mercury and there could be the slight n-complexation between thiophere ring of DUT-67 (Zr) and Hg2+ besides physical absorption, while there only was physical adsorption between DUT-67 (Zr) and CH3Hg+. The developed methods were applied to remove trace Hg2+ and CH3Hg+ in the real water samples, and the removal efficiency was from 69% to 90% and from 30% to 77% respectively; when the concentrations of Hg2+ was lower than 20 mu g L-1 in the samples, the remaining mercury concentration was lower than 1 mu g L-1, which can meet the standard of the World Health Organization.

引用

页码：99 / 106

页数：8

共 46 条

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