Dye adsorption into transition metal-doped zinc oxide nanoparticles supported on natural zeolites to solve wastewater issue

[摘要] In this work, Fe-doped zinc oxide/natural zeolite (Fe:ZnO/NZ) nanocomposites were prepared using the co-precipitation method with various NZ amounts. The nanocomposites were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis and thermogravimetric analysis (TGA). The nanocomposites were used to remove methylene blue (MB) dye from an aqueous solution. The effect of various NZ amounts and initial MB concentration were tested. The Pseudo-first-order and pseudo-second-order kinetic models were used to explain the adsorption mechanism. The Langmuir and the Freundlich isotherm models were used to fit the adsorption isotherms of the nanocomposites.

[发布机构] Departemen Fisika, Fakultas MIPA-Universitas Indonesia, Depok; 16424, Indonesia^1;Integrated Laboratory of Energy and Environment, Fakultas MIPA-Universitas Indonesia, Depok; 16424, Indonesia^2

[效力级别] 化学

[关键词] Adsorption mechanism;Brunauer-emmett-teller surface areas;Coprecipitation method;Freundlich isotherm model;Methylene Blue;Natural zeolites;Pseudo-first-order;Pseudo-second-order kinetic models