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absorption-efficiency
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Polarity adjustment of a nanosilica-functionalized polyamine modified by ionic liquid for removal of Cu2+ from aqueous solutions
, Article RSC Advances ; Volume 6, Issue 17 , 2016 , Pages 14128-14133 ; 20462069 (ISSN) ; Mahmoodi Hashemi, M ; Ghavidel, N ; Sharif University of Technology
Royal Society of Chemistry
2016
Abstract
The current work deals with modification of the surface of a silica-polyamine with amine-based ionic liquid (IL) and its application for removal of Cu2+ from an aqueous media. The absorbent is simply prepared from commercially available reagents. The material is characterized by FT-IR spectroscopy, thermogravimetric analysis (TGA), N2 adsorption-desorption, and transmission electronic microscopy (TEM). Effects of several parameters on absorption efficiency, as well as activity of the absorbent to other metals, are also investigated. Moreover, the reusability of the absorbent is studied at the optimized condition. © The Royal Society of Chemistry 2016
An optimal architecture of magneto-plasmonic core-shell nanoparticles for potential photothermal applications
, Article Physical Chemistry Chemical Physics ; Volume 22, Issue 25 , 2020 , Pages 14318-14328 ; Souri, S ; Navid, H. A ; Sadighi Bonabi, R ; Anvari, A ; Palpant, B ; Sharif University of Technology
Royal Society of Chemistry
2020
Abstract
In this work, the optical responses of Fe3O4@Au and Fe3O4@Ag are comprehensively investigated using the discrete dipole approximation. It is found that the resonance wavelength and absorption efficiency strongly depend on the composition of the core and shell, geometry of the nanoparticles, core to particle volume ratio, core radius and shell thickness. The strongest impact is due to the shell material, the shape of the nanoparticles and their combination. When the composition of the shell is changed from gold to silver, instead of one fundamental resonance peak the absorption spectrum shows two, corresponding to the bonding plasmon mode at the nanoparticle-environment interface and...