Tailoring iron MOF/carbon nanotube composites as flow electrodes for high-performance capacitive deionization

• Published in: Discover materials Vol. 4; no. 1; pp. 54 - 13
• Main Authors: Akulwar, Maheshwari, Bailmare, Deepa B., Jugade, Ravin M., Deshmukh, Abhay D.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 04.10.2024; Springer Nature B.V; Springer
• Subjects: Adsorption; Biomaterials; Capacitive deionization; Carbon; Characterization and Evaluation of Materials; Chemistry and Materials Science; Desalination; Efficiency; Electrodes; Electrolytes; Energy consumption; Energy Materials; Fe-MOF/CNT; High electrosorption; Materials Science; Metallic Materials; Metal–organic frameworks; Pore size; Structural Materials; Water; Water shortages; India; Capacitive deionization; Fe-MOF/CNT; Metal–organic frameworks; High electrosorption
• ISSN: 2730-7727; 2730-7727
• DOI: 10.1007/s43939-024-00118-1

Capacitive deionization techniques are of interest in water treatment technology due to their low cost, excellent efficiency, and environmental friendliness. Currently, metal–organic frameworks are highly impactful candidates for use as electrode materials in electrochemistry. It provides a large pore volume, good chemical stability, and a high specific surface area. Tuning metal–organic frameworks with carbon materials will have a good impact on electrode materials with increasing performance. This study shows a facile and effective strategy for arranging flow capacitive desalination technology for salt removal. The conducting network of Fe-MOF/CNTs provides rapid electron transport and offers a high diffusion length of ions. This material exhibited excellent desalination performance, with a high salt adsorption of 80.575 mg/g at 1.6 V at an initial NaCl concentration of 1000 mg/L. Overall, the facile method and fabrication strategy greatly advances water treatment applications. Highlights Fe-MOF/CNT composites were obtained by a one-step hydrothermal process for improved CDI performance The strategy endowed the material with excellent porosity, and the presence of iron oxidation sites improved the overall conductivity of the electrode. • Fe-MOF/CNTs were used as flow electrodes for novel capacitive deionization • Fe-MOF/CNTs exhibited a high NaCl electrosorption capacity of 80.575 mg/g. Our strategy provides matching properties and an excellent combination of Fe-MOF and CNTs for improved CDI performance.