Solid phase-fabrication of multi-walled carbon nanotubes and their derivatives for efficient extraction and analysis of Bismarck Brown-Y Dye from aqueous solution

This investigation used efficientMWCNTs and their derivatives; MWCNT-Tris, MWCNT-H, MWCNT-Tetra and MWCNT-G, for extraction and removing the Bismarck Brown-Y (BB-Y) by solid phase extraction (SPE). The concentration of BB-Y was measured by UV-Vis spectrophotometer after the SPE technique. The solid phases were analyzed and characterized by utilizing several techniques, including Fourier Transform Infrared Spectroscopy (FTIR), FE-SEM, zeta potential measurement, and X-ray Diffraction (XRD). At optimization conditions, the optimum concentration of the BB-y was obtained at ۲۰۰ mgL-۱ and ۳۰۰ mg L-۱ for MWCNT and MWCNT-Tris, whereas ۴۰۰ mg L-۱ for MWCNT-H, MWCNT-Tetra, and MWCNT-G. Additionally, the optimal pH value was ۶.۰ for MWCNT-Tris, and it was ۱۰ for MWCNT, MWCNT-H, MWCNT-Tetra, and MWCNT-G. However, the volume of samples was achieved at ۲۵ mL. Furthermore, it was found that the most effective flow rate for the eluting solvent was ۰.۵ ml min-۱. Besides the type and volume of eluents were examined and evaluated. Finally, the present work involved the determination of adsorption capacity using Langmuir and Freundlich isotherm models under ideal conditions. The Langmuir model revealed that the qmax for the MWCNT, MWCNT-tris, MWCNT-H, MWCNT-Tetra, and MWCNT-G was obtained ۸۶۲.۰۷, ۱۰۷۵.۲۷, ۱۲۸۲.۰۵, ۱۲۹۸.۷۰, and ۱۳۳۳.۳۳ mg g-۱, respectively.

کلیدواژه ها:

Solid phase extraction ، Multi-walled carbon nanotubes ، UV-VIS spectrophotometer ، Bismarck Brown-y