Synthesis, characterization of Lanthanum (III) / Terephthalate metal-organic framework, and potential use for Removal of anionic and cationic exchange contaminants | ||||
| Egyptian Journal of Chemistry | ||||
| Article 20, Volume 65, Issue 5, May 2022, Page 207-219 PDF (991.63 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2021.96750.4537 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohamed Saeed  1; Rabie Farag2; Hesham Tantawy3; Mustafa Mohsen1
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| 1Egyptian armed forces, Cairo, Egypt | ||||
| 2Chemistry department, Faculty of Science, Al Azhar University, Cairo, Egypt | ||||
| 3Chemical Engineering Department, Military Technical College, Cairo, Egypt | ||||
| Abstract | ||||
| Abstract Lanthanum(III)-terephthalic metal-organic framework copolymer (La-TPh CP) was synthesized by a solvothermal method and characterized by SEM/EDX, TEM, FTIR, Raman, BET, and XRD. Raman microscopy and XRD expose that terephthalic acid (H2BDC) acts as a bidentate ligand towards lanthanum (La)(III) through the two carboxylate gropes. Both of FTIR and Raman microscopy emphasize the formation of coordination bonds between the electron-acceptor La(III) atoms and the electron-donor oxygen atoms. SEM shows that the (La-TPh CP) has a bar-like macro-structure with small dimensions, e.g., 200 nm. (La-TPh CP) structure is proposed to be cationic metal-organic framework and extremely water-stable. Due to these features, (La-TPh CP) was studded for the universal removal of cationic and anionic dyes, using synthetic cationic dye as methylene blue (MB) and an anionic dye as congo red (CR) in an aqueous solution. 5 mg/L MB and 40 mg/L CR was almost completely removed. Kinetic study for removal of CR shows the ideal order model is pseudo-second-order, and in the case of MB is pseudo-first-order. | ||||
| Keywords | ||||
| Keywords: Lanthanum (III)-Terephthalic (La-TPh CP); metal-organic framework; ligand | ||||
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