Synthesis an‎d Characterization of Nickel-Cobalt-Based Metal-Organic Frameworks for Pharmaceutical Pollutant Removal

8/19/2026 12:00:00 AM

With the continuous rise in global population an‎d technological progress—particularly in the pharmaceutical sector—the contamination of water bodies by pharmaceutical residues has emerged as a critical environmental concern. These pollutants, even at trace levels, pose significant risks to aquatic life an‎d human health. As access to clean water becomes increasingly urgent, there is a pressing need to develop highly effective strategies for eliminating such contaminants. In this research, a novel composite adsorbent derived from a Nickel-Cobalt metal-organic framework (Ni-Co MOF) was fabricated via a solvothermal method an‎d tested for its capacity to remove diclofenac sodium (DCF) from water. The focus on DCF stems from its chemical persistence an‎d harmful ecological impact. To enhance adsorption efficiency, the material’s surface was functionalized using cetyltrimethylammonium bromide (CTAB). Experimental findings showed that under optimized conditions (100 mg/L initial DCF concentration, 50 mL solution volume, 60-minute contact time, pH 6.5, an‎d temperature of 25 °C), the material achieved a removal efficiency of 87.48%. The maximum adsorption capacity reached 380.34 mg/g. Isothermal modeling confirmed that the adsorption followed the Langmuir model, indicating monolayer adsorption on a homogeneous surface. Kinetic studies further revealed a strong fit with the pseudo-second-order model, suggesting chemisorption as the dominant mechanism. Overall, the results demonstrate that CTAB-functionalized Ni-Co MOF is a highly effective adsorbent for the removal of DCF an‎d represents a promising solution for advanced water purification technologies targeting pharmaceutical pollutants.

چارچوب فلزي-آلي , آلاينده‌هاي دارويي , جذب , چارچوب آلي-فلزي نيكل-كبالت , تصفيه آب و فاضلاب

Metal-Organic framework , Pharmaceutical pollutants , Adsorption , Ni-Co MOF , Water an‎d wastewater treatment

yousef dorostkar

ahmad rahbar