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Continuous Interfacial Centrifugal Separation and Recovery of Silver Nanoparticles
Author(s) -
Deshpande Jaydeep B.,
Navale Govinda R.,
Dharne Mahesh S.,
Kulkarni Amol A.
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201800722
Subject(s) - extractor , solubility , centrifugal force , materials science , silver nanoparticle , nanoparticle , solvent , chemical engineering , chromatography , chemistry , flow (mathematics) , nanotechnology , mechanics , process engineering , organic chemistry , physics , engineering
Continuous‐flow separation and recovery of silver nanoparticles (AgNPs) using an annular centrifugal extractor (ACE) is demonstrated. Separation was achieved at the liquid‐liquid interface based on the balance between centrifugal force and the solubility of the capping agent. A mathematical model is presented to understand the mechanism in greater detail. The separation of poly(vinylpyrrolidone) (PVP)‐coated AgNPs in an ACE using a strong immiscible solvent was performed. The material accumulated at the interface was separated periodically without discontinuing the operation. The method is also suitable for separation of large particles or 1D/2D nanostructures even employing a single annular centrifugal extractor. Stable AgNPs were selected for a detailed antimicrobial activity study.