Novel Highly Efficient Adsorbent Material based on MIL-101 MOF doped with Mn for Cu(II) Decontamination from Wastewater
نویسندگان
1 Inorganic Chemistry Department, National Research Centre, 33 El-Behouth St., Dokki, Giza, Egypt
2 Department of Chemistry, Faculty of Science, Helwan University, Cairo, Egypt
3 Department of Chemistry, Faculty of Science, Helwan University, Cairo, Egypt
4 Department of Chemistry, Faculty of Science, Helwan University, Cairo, Egypt
5 Department of Nanomaterials and Nanotechnology, Central Metallurgical R & D Institute, Cairo, Egypt
doi
10.22090/jwent.2026.01.06چکیده
Although copper is classified as a heavy metal and is widely used across various industrial sector, it is also well-known for having detrimental effects on human health and the environment. In this work, manganese was used to produce and dope chromium terephthalate MOF (MIL-101(Cr)) using different molar ratios to create effective adsorbents: MIL-101/0.25Mn and MIL-101/0.5Mn MOFs. The MIL-101/0.5Mn MOF was specifically employed to remove Cu2+ ions from water and wastewater. The prepared samples were analyzed using XRD, SEM/EDX, TEM, FT-IR, TGA, XPS, and BET analysis. The doped MIL-101/0.5Mn crystals displayed a hexagonal crystal shape. The specific surface areas of the synthesized MIL-101 and MIL-101/0.5Mn MOFs were high, measuring 1009.53 and 1676.59 m2 g-1, respectively, and exhibited characteristics of a mesoporous structure. The MIL-101/0.5Mn MOF displayed a high capacity for Cu2+ adsorption of 124.97 mg g-1 and, even after five cycles, maintained a strong removal ability. Endothermic and spontaneous Cu2+ adsorption occurred on the MIL-101/0.5Mn MOF, with equilibrium findings indicating a good fit to pseudo-second-order kinetics and Langmuir isotherm studies. The MIL-101/0.5Mn MOF demonstrated better copper removal efficacy relative to other studies. The results suggested copper (II) was adsorbed by surface complexation and electrostatic attraction. Furthermore, the Cu2+ recovery from water samples ranged between 89.1% and 95.8%, indicating the remarkable efficiency of the MIL-101/0.5Mn MOF for copper removal from real samples.
