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Issue 28, 2016
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Diamine-appended metal–organic frameworks: enhanced formaldehyde-vapor adsorption capacity, superior recyclability and water resistibility

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Abstract

Capturing formaldehyde (HCHO) from indoor air with porous adsorbents still faces challenges due to their low uptake capacity, difficult regeneration, and especially, the sorption capacity reduction that is caused by the competitive adsorption of H2O when exposed to a humid atmosphere. In this work, MIL-101 is modified with ethylenediamine (ED) on its open-metal sites to substantially improve the HCHO adsorption properties. The HCHO uptake capacity of modified MIL-101 can be up to 5.49 mmol g−1 in this study, which is among the highest-levels of various adsorbents reported thus far. Moreover, this modification both improved the material's recyclability and water resistibility, allowing for cyclic and selective tests with stable adsorption capacities, revealing the potential utility of amine-modified MOFs for indoor air purification.

Graphical abstract: Diamine-appended metal–organic frameworks: enhanced formaldehyde-vapor adsorption capacity, superior recyclability and water resistibility

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Publication details

The article was received on 29 Apr 2016, accepted on 12 Jun 2016 and first published on 13 Jun 2016


Article type: Communication
DOI: 10.1039/C6DT01696K
Dalton Trans., 2016,45, 11306-11311

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    Diamine-appended metal–organic frameworks: enhanced formaldehyde-vapor adsorption capacity, superior recyclability and water resistibility

    Z. Wang, W. Wang, D. Jiang, L. Zhang and Y. Zheng, Dalton Trans., 2016, 45, 11306
    DOI: 10.1039/C6DT01696K

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