A metal–organic framework MIL-101 doped with metal nanoparticles (Ni & Cu) and its effect on CO2adsorption properties
| Autor: | Mohammad Reza Talaie, Shahram Tangestaninejad, Seyed Foad Aghamiri, Maryam Montazerolghaem |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Chromatography General Chemical Engineering Doping 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Co2 adsorption 01 natural sciences 0104 chemical sciences Adsorption Chemical engineering Microwave irradiation Freundlich equation 0210 nano-technology Metal nanoparticles Bar (unit) |
| Zdroj: | RSC Advances. 6:632-640 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c5ra22450k |
| Popis: | In this work, MIL-101-Cu and MIL-101-Ni were successfully synthesized via a microwave irradiation technique to enhance the adsorption capacity and adsorbent cyclability. The prepared adsorbents were characterized by various techniques such as XRD, FE-SEM, EDS, ICP, TEM and BET. TEM images clearly demonstrated that Cu and Ni NPs of 3–7 nm and 2–4 nm, respectively, were incorporated within the pores of the MIL-101 adsorbent. The CO2 adsorption capacity was measured by a volumetric method. The equilibrium CO2 adsorption capacities were measured as 9.7, 10.6, 11.8 and 12.4 mmol g−1 for the parent MIL-101, activated MIL-101, MIL-101-Cu and MIL-101-Ni adsorbents, respectively at 7.1 bar and 298.2 K. The initial isosteric heats of CO2 adsorption on the above mentioned adsorbents were estimated to be 22, 27, 31 and 38 kJ mol−1, respectively. Successive adsorption–desorption cycles were conducted to explore the cyclability of the adsorbents. The results confirmed that the adsorption capacity remained constant after 100 cycles. The equilibrium experimental data were well-fitted with a Freundlich isotherm model. |
| Databáze: | OpenAIRE |
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