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

Zheng Ni; John P. Jerrell; Keith R Cadwallader; Richard I. Masel

doi:10.1021/ac0613075

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

Zheng Ni, John P. Jerrell, Keith R Cadwallader, Richard I. Masel

Food Science and Human Nutrition

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Abstract

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 °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 ∼5 under similar conditions. These results demonstrate that MOFs can be quite useful in selective preconcentrators.

Original language	English (US)
Pages (from-to)	1290-1293
Number of pages	4
Journal	Analytical chemistry
Volume	79
Issue number	4
DOIs	https://doi.org/10.1021/ac0613075
State	Published - Feb 15 2007

ASJC Scopus subject areas

Analytical Chemistry

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10.1021/ac0613075

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abstract = "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 °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 ∼5 under similar conditions. These results demonstrate that MOFs can be quite useful in selective preconcentrators.",

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

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