Oxidation of carbazole by shape-controllable Cu2O on MWW catalysis
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In the present study, various shapes of copper (I) oxide (Cu2O) such as spherical, cubic, leaf, frames, cage, branch, multihedral, octahedral, flower, and tetrapod were synthesized and characterized by different methods. The oxidation of heterocycle carbazole (CBZ) in mild conditions was studied by various shapes of Cu2O. Octahedral with the lowest surface area 1.65 and tetrapod with a high surface area 39.29 (m2g−1) had oxidation efficiencies of 23.44% and 96.49% for CBZ at 4 h, respectively. Zeolite MWW was synthesized by microwave and hydrothermal method on which Cu2O tetrapod was loaded via wet impregnation method. The results indicated that Cu2O tetrapod/MWW composite considerably outperformed Cu2O tetrapod. The oxidation of CBZ by Cu2O tetrapod/MWW composite for 75 min was 99.99%. Cu2O tetrapod/MWW composite was shown to be an efficient catalyst for the oxidation of nitrogen heterocycles.
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The authors declare no conflict of interest.
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