Journal
CRYSTENGCOMM
Volume 21, Issue 15, Pages 2541-2550Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ce00015a
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Fe-MOFs were successfully synthesized via a dielectric barrier discharge (DBD) plasma method and applied to methyl orange adsorption. Fe-MOFs were characterized via XRD, SEM, FT-IR, BET and zeta potential analysis. A systematic study was carried out to optimize the synthesis conditions, taking into account the adsorption capacity of the Fe-MOFs. The optimum conditions were determined to be: a discharge time of 80 min; a discharge voltage of 18 kV; a reactant concentration of 10 mg mL -1; and a mass ratio of terephthalic acid to ferric chloride hexahydrate of 1 : 1. Fe-MOFs synthesized under the optimum conditions exhibited an adsorption capacity of 750 mg g -1, at a methyl orange concentration of 100 mg L -1 and with an Fe-MOF dosage of 0.1 g L -1. The kinetic adsorption data showed a good fit to the pseudo-secondorder kinetics equation, while the isotherm data were well modeled using the Langmuir equation. Plasma preparation was shown to be an effective method for the preparation of MOFs.
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