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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jhung, Sung Hwa Hasan, Zubair Jun, Jong Won Tong, Minman Jung, Beom K. Zhong, Chongli |
| Description | Author Affiliation: Jun JW ( Department of Chemistry and Green-Nano Materials Research Centre, Kyungpook National University, Daegu 702-701 (Republic of Korea), Fax: (+82) 53-950-6330.) |
| Abstract | The adsorptive removal of organoarsenic compounds such as p-arsanilic acid (ASA) and roxarsone (ROX) from water using metal–organic frameworks (MOFs) has been investigated for the first time. A MOF, iron benzenetricarboxylate (also called MIL-100-Fe) exhibits a much higher adsorption capacity for ASA and ROX than activated carbon, zeolite (HY), goethite, and other MOFs. The adsorption of ASA and ROX over MIL-100-Fe is also much more rapid than that over activated carbon. Moreover, the used MIL-100-Fe can be recycled by simply washing with acidic ethanol. Therefore, it is determined that a MOF such as MIL-100-Fe can be used to remove organoarsenic compounds from contaminated water because of its high adsorption capacity, rapid adsorption, and ready regeneration. Moreover, only one of three analogous MIL-100 species (MIL-100-Fe, rather than MIL-100-Al or MIL-100-Cr) can effectively remove the organoarsenic compounds. This selective and high adsorption over MIL-100-Fe, different from other analogous MIL-100 species, can be explained (through calculations) by the facile desorption of water from MIL-100-Fe as well as the large (absolute value) replacement energy (difference between the adsorption energies of the organoarsenic compounds and water) exhibited by MIL-100-Fe. A plausible adsorption/desorption mechanism is proposed based on the surface charge of the MOFs, FTIR results, calculations, and the reactivation results with respect to the solvents used in the experiments. |
| ISSN | 09476539 |
| e-ISSN | 15213765 |
| Journal | Chemistry - A European Journal |
| Issue Number | 1 |
| Volume Number | 21 |
| Language | English |
| Publisher | Wiley-VCH;ChemPubSoc Europe |
| Publisher Date | 2015-01-02 |
| Publisher Place | Germany |
| Access Restriction | Open |
| Subject Keyword | Arsanilic Acid Chemistry Organometallic Compounds Roxarsone Water Pollutants, Chemical Adsorption Coordination Complexes Hydrogen-Ion Concentration Ions Spectroscopy, Fourier Transform Infrared Water Purification Research Support, Non-U.S. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Catalysis |
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