PEI-M [M:Cu(II) and Co(II)] Hydrogel Catalyst For Methyl Orange Degradation And Epinephrine Oxidation
Abstract
Here, we report the catalytic activity of catalyst derived from polyethylene imine-M (II) (PEI-M: Cu(II), and Co(II)) hydrogel composite in the presence of H2O2 as an oxidant. The PEI-Cu(II)/H2O2 heterogeneous composite was used in the degradation of an azo-dye, methyl orange (MO) in aqueous solution. In the presence of 63 mM H2O2, 100% of MO was removed in 80 min. The kinetics investigation of the processes demonstrated a pseudo-first-order kinetic model was applicable. Additionally, a pharmaceutical product, epinephrine (EP) was partially oxidized to adrenochrome by PEI-Co(II)/H2O2 hydrogel composite system. About 50% of conversion to adrenochrome was reached in less than 55 min again comply with the pseudo-first-order kinetic model. Both MO and EP oxidation reaction provided mild activation energies, 44.09, and 58.02 kj.mol-1, respectively. Various parameters effecting MO and EP oxidation were investigated.
Keywords
References
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Details
Primary Language
Turkish
Subjects
Engineering
Journal Section
-
Publication Date
December 29, 2015
Submission Date
October 29, 2015
Acceptance Date
-
Published in Issue
Year 2015 Volume: 1 Number: 1