Synthesis and characterization of hexagonal boron nitride used for comparison of removal of anionic and cationic hazardous azo-dye: kinetics and equilibrium studies

Authors : Tuba TARHAN

Pages : 1471-1482

View : 16 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The purpose of this study was to compare the adsorption behavior of cationic and anionic dyes onto a hexagonal boron nitride insert ignore into journalissuearticles values(hBN); nanostructure that was rich in a negative charge. Herein, the hBN nanostructure was synthesized using boric acid as a precursor material. The characteristic peaks of the hBN nanostructure were performed using Fourier transform infrared insert ignore into journalissuearticles values(FT-IR); and Raman spectroscopies. The morphology and the particle size of hBN nanostructure were determined by transmission electron microscopy insert ignore into journalissuearticles values(TEM); and scanning electron microscopy insert ignore into journalissuearticles values(SEM);. During the studies, various essential adsorption parameters were investigated, such as the initial dye concentration, pH of the dye solution, adsorbent dose, and contact time. Under optimal conditions, the removal of 42.6% Metanil yellow insert ignore into journalissuearticles values(MY); and 90% Victoria blue B insert ignore into journalissuearticles values(VBB); from aqueous solution was performed using a 10-mg hBN nanostructure. Furthermore, the equilibrium studies showed that the Freundlich isotherm model fitted well for the removal of MY. However, the Langmuir isotherm model fitted well for the removal of VBB. Moreover, according to the results obtained from the kinetic studies, while the first-order kinetic model was suited for the adsorption of the MY, the second-order kinetic model was found to well fit for the adsorption of VBB.
Keywords : Hexagonal boron nitride, nanostructure, Victoria blue B, Metanil yellow, comparison adsorption