Efficient and Rapid Photocatalytic Reduction of Hexavalent Chromium Achieved by a Phloroglucinol-Derived Microporous Polymeric Organic Framework Solid
| Autor: | Konstantinos Dimos, Michael A. Karakassides, Konstantinos C. Vasilopoulos, Vasilios Kostas, Maria Baikousi, Ioannis Koutselas |
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| Rok vydání: | 2017 |
| Předmět: |
Thermogravimetric analysis
Aqueous solution Diffuse reflectance infrared fourier transform Phloroglucinol Inorganic chemistry 02 engineering and technology Microporous material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy chemistry Photocatalysis Physical and Theoretical Chemistry Hexavalent chromium 0210 nano-technology Spectroscopy Nuclear chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 121:7303-7311 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.7b00523 |
| Popis: | A microporous polymeric organic framework (POF) based on phloroglucinol (phlo-POF) was for the first time evaluated on photoreduction and removal processes of hexavalent chromium (Cr6+) from aqueous solutions. The phlo-POF synthesis was based on reaction of phloroglucinol and terephthalaldehyde under hydrothermal conditions. Structural and chemical characterization was performed using UV–vis–NIR diffuse reflectance spectroscopy (DRS), FT-infrared spectroscopy, and thermogravimetric methods, while surface area analysis was employed to determine other physical and surface properties. Batch experiments were conducted on contaminated water to determine the rate and extent of Cr6+ removal and its immobilization by the phlo-POF material. The kinetic studies showed a rapid removal of Cr6+ ions from the water in the presence of the phlo-POF, best described by the zero-order kinetic model. The efficiency of the material with UV–C irradiation on Cr6+ reduction was compared with a well-studied material, the Degussa ... |
| Databáze: | OpenAIRE |
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