Metal-organic frameworks as adsorbents for trapping and preconcentration of organic phosphonates

被引：114
|
作者：
Ni, Zheng
Jerrell, John P.
Cadwallader, Keith R.
Masel, Richard I.
机构：
[1] Univ Illinois, Dept Chem & Biomol Engn, Urbana, IL 61801 USA
[2] Univ Illinois, Dept Food Sci & Human Nutr, Urbana, IL 61801 USA
来源：
ANALYTICAL CHEMISTRY | 2007年 / 79卷 / 04期
关键词：
D O I：
10.1021/ac0613075
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Metal-organic frameworks (MOFs) have high surface areas and tailorable molecular properties so they have the potential of being selective adsorbents for preconcentrators. In this paper, IRMOF1 is tested as an adsorbent for preconcentration for the first time using dimethyl methylphosphonate (DMMP) as a test case. We find that DMMP is selectively adsorbed on IRMOF1 and is released upon heating to 250 degrees C. Concentration gains of more than 5000 are observed for DMMP with a 4-s sampling time. Sorption capacities are 0.95 g of DMMP/g of IRMOF1. By comparison, dodecane shows a preconcentration gain of similar to 5 under similar conditions. These results demonstrate that MOFs can be quite useful in selective preconcentrators.
引用
收藏
页码：1290 / 1293
页数：4
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