Synthesis of Ag/ZIF-67 as a Heterogeneous Catalyst for Methyl Orange Degradation in Presence of H2O2
Journal: International Journal of Scientific Engineering and Science (Vol.3, No. 3)Publication Date: 2019-04-15
Authors : Pham Quoc Yen Le Thi Anh Thu Pham Van Toan Ho Ngoc Tri Tan Dang Huynh Giao;
Page : 81-85
Keywords : Synthesis; Ag/ZIF-67; methyl orange degradation; H2O2; catalyst; solution impregnation.;
Abstract
A metal-organic framework Ag/ZIF-67 was successfully synthesized and characterized by several methods including X-ray powder diffraction (PXRD), Fourier transform infrared (FT-IR), Scanning electron microscopy (SEM), and Thermogravimetric analysis (TGA). The results showed that Ag/ZIF-67 had a polyhedron structure was similar with ZIF-67 and 5.1% of Ag nanoparticles was loaded into its structure. The catalytic activity of Ag/ZIF-67 was then investigated into methyl orange (MO) minerization process in presence of H2O2 . High efficiency was obtained with over 99% when using H2O2 concentration 0,08 mol.L-1 , methyl orange concentration 10 mg.L-1 , Ag/ZIF-67 concentration 200 mg.L-1 at 30oC, pH 7 in 180 min. The solid and could be recycled and reused without a significant degradation in catalytic activity with the efficiency is over 90% after 3 times.
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Last modified: 2019-04-26 21:16:29