Removal of dyes from aqueous solution using zinc terephthalic acid metal-organic frameworks (Zn-TPA-MOF) based adsorbent | ||
| Egyptian Journal of Chemistry | ||
| Volume 66, Issue 8, August 2023, Pages 295-305 PDF (1.19 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2022.114894.5218 | ||
| Authors | ||
| mohamed saeed iprahim* 1; Rabie saad Farag2; hesham ramzy tantawe3 | ||
| 1Armed forces / Al-Azhar university | ||
| 2egypt | ||
| 3Military Technical College | ||
| Abstract | ||
| Zinc (II)-terephthalic acid metal-organic framework (Zn-TPA-MOF) was synthesized by a solvothermal method and characterized by Scanning Electron Microscope/Energy Dispersive X-Ray (SEM/EDX), Fourier Transformer Infrared (FTIR), Raman, and X-ray diffraction (XRD). Raman microscopy and XRD expose that terephthalic acid (TPA) acts as a bidentate ligand towards zinc(II) through the two carboxylate groups. FTIR and Raman microscopy emphasize the formation of coordination bonds between the electron-acceptor Zn(II) atoms and the electron-donor oxygen atoms. SEM shows that the (Zn-TPA-MOF) has a bar-like macro-structure with small dimensions, e.g., 200 nm. (Zn-TPA-MOF) the structure is proposed to be a cationic metal-organic framework and extremely water-stable. Due to these features, (Zn-TPA-MOF) was studied for the Removal of cationic and anionic dyes, using synthetic cationic dye as Methylene Blue (MB+) and an anionic dye as Congo Red (C.R.-) in an aqueous solution. Zn-TPA-MOF has a strong adsorption potential for both C.R. and M.B. due to the maximum adsorption capacity of C.R. (769.23 mg/g) and MB (147.06 mg/g) onto Zn-TPA-MOF. | ||
| Keywords | ||
| Keywords: Ligand; Metal-organic framework; Zinc(II)-Terephthalic (Zn-TPh MOF) | ||
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