Adsorption of silver nanoparticles from aqueous solution on copper-based metal organic frameworks (HKUST-1). (May 2016)

• Record Type: Journal Article
• Authors: Conde-González, J.E.; Peña-Méndez, E.M.; Rybáková, S.; Pasán, J.; Ruiz-Pérez, C.; Havel, J.
• Is Part Of: Chemosphere. Volume 150(2016)
• Page Start: 659
• Page End: 666
• Publication Date: 2016-05
• Subjects: Metal organic frameworks -- Silver nanoparticles -- Chlorides -- Water; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2016.02.005
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Silver nanoparticles (AgNP) are emerging pollutants. The use of novel materials such as Cu-(benzene 1, 3, 5-tricarboxylate, BTC) Metal-Organic Framework (MOFs), for AgNP adsorption and their removal from aqueous solutions has been studied. The effect of different parameters was followed and isotherm model was suggested. MOFs adsorbed fast and efficiently AgNP in the range C 0 < 10 mg L −1, being Freundlich isotherm (R = 0.993) these data fitted to. Among studied parameters a remarkable effect of chloride on sorption was found, thus their possible interactions were considered. The high adsorption efficiency of AgNP was achieved and it was found to be very fast. The feasibility of adsorption on Cu-(BTC) was proved in spiked waters. The results showed the potential interest of new material as adsorbent for removing AgNP from environment. Highlights: This study investigates the removal of AgNP colloids by Cu-(BTC) MOFs. Adsorption of AgNP on HKUST-1 was very fast and followed Freundlich isotherm. The efficient and complete removal of AgNP was affected by the type of water. SEM and EDX analysis showed that AgNP were adsorbed onto the MOFs. Very low amount of HKUST-1 (10 mg) are necessary to perform adequate adsorption of AgNP the range of environmental levels.