Self-assembly of nanoparticles employing polymerization-induced phase separation

Williams, Roberto J. J.; Hoppe, Cristina Elena; Zucchi, Ileana Alicia; Romeo, Hernan Esteban; Dell'Erba, Ignacio Esteban; Gómez, María Lorena; Puig, Julieta; Leonardi, Agustina Belen

doi:10.1016/j.jcis.2014.06.022

Cited by 20 publications

(12 citation statements)

References 43 publications

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“…For instance, it was possible to synthesize SSO films doped with safranin, in which the light energy collected by the matrix is efficiently transferred to the fluorescent dye [12]. It was also possible to synthesize new SSO films with pendant dodecyl chains able to disperse metallic nanoparticles [13,14], gold thiolates [15], and silver thiolates [16]. On the other hand, the incorporation of porphyrin or Re(I) complexes in these materials proved to be very effective in generating reactive oxygen species…”

Section: Introductionmentioning

confidence: 99%

Hybrid Films Based on a Bridged Silsesquioxane Doped with Goethite and Montmorillonite Nanoparticles as Sorbents of Wastewater Contaminants

Waiman

Dell'Erba

Chesta

et al. 2016

Journal of Nanomaterials

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The synthesis and characterization of silsesquioxane (SSO) films with pendant dodecyl groups and doped with goethite (Gt) or montmorillonite (MMT) nanoparticles were carried out and the new materials tested as sorbents of diverse contaminants. The synthetic method used yielded SSO films with the inorganic substrates homogeneously distributed within the polymeric matrices. The new materials were characterized by SEM, FTIR, XRD, and DSC and tested to evaluate their capability for adsorbing metallic cations, organic dyes, and phosphate, frequent contaminants of industrial effluents. All films were found suitable for removing metallic cations. Results also showed that the SSO films undoped and doped with Gt are primarily apt for anionic compounds removal. Although the SSO films doped with MMT are capable of removing cationic contaminants from aqueous samples, the stiffness of the SSO matrix hinders MMT properties as an adsorbent. The possibility of dispersing nanoparticulate systems in the stable and chemically inert SSO matrices simplifies their application for contaminant removal, particularly because it makes the separation process of the absorbed pollutant from the treated medium easier.

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Section: Introductionmentioning

confidence: 99%

Hybrid Films Based on a Bridged Silsesquioxane Doped with Goethite and Montmorillonite Nanoparticles as Sorbents of Wastewater Contaminants

Waiman

Dell'Erba

Chesta

et al. 2016

Journal of Nanomaterials

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“…It can also enhance the absorption of solar energy. Silver nanoparticles can be prepared through various methods including thermal evaporation [1], laser ablation [2], electromagnetic levitation gas condensation [3], radio-frequency sputtering [4], chemical reaction [5], phase transformation [6], self-assembly [7], and plasma electrochemical reduction [8]. Traditional electrodeposition as a relatively simple approach was also used to make silver nanoparticles [9,10].…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticle Formation on Metal Substrate Under Concentration-Limited Condition

Gan

Tavares

Gonzaga

et al. 2016

Journal of Micro and Nano-Manufacturing

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Silver nanoparticles were electrodeposited from 0.3 M oxalic acid electrolyte on a pure aluminum working electrode under silver ion concentration-limited condition. A silver wire was held in a glass tube containing 1.0 M KCl solution as the counter electrode. Ion exchange between the glass tube and the main electrodeposition bath through a capillary was driven by the overpotentials as high as 10 V supplied by an electrochemical workstation. Due to the reaction between chlorine anion and silver cation to form AgCl solid at the Ag/AgCl electrode, the silver ion concentration-limited condition holds in the electrolyte. It is found that silver grows at the aluminum working electrode to form nanoparticles with an average size of about 52.4 ± 13.6 nm. With the increasing of the deposition time, the silver nanoparticles aggregate into clusters. The silver particle clusters are separated with approximately 112.6 ± 19.7 nm due to the hydrogen bubble-induced self-assembling, which is shown by the confined deposition of silver on a gold coating. The surface roughness of the aluminum substrate leads to the reduced uniformity of silver nanoparticle nucleation and growth.

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“…One possible way is the use Au NPs with stabilizing ligands that assure solubility in the initial formulation and throughout the polymerization. In some cases, Au NPs are soluble in the monomers but segregate during reaction by a polymerization-induced phase separation process [34,35]. In order to avoid phase separation, the stabilizing ligands must be extremely soluble during the whole conversion range.…”

Section: Introductionmentioning

confidence: 99%

Remote activation by green-light irradiation of shape memory epoxies containing gold nanoparticles

Leonardi

Puig

Antonacci

et al. 2015

European Polymer Journal

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Self-assembly of nanoparticles employing polymerization-induced phase separation

Cited by 20 publications

References 43 publications

Hybrid Films Based on a Bridged Silsesquioxane Doped with Goethite and Montmorillonite Nanoparticles as Sorbents of Wastewater Contaminants

Hybrid Films Based on a Bridged Silsesquioxane Doped with Goethite and Montmorillonite Nanoparticles as Sorbents of Wastewater Contaminants

Silver Nanoparticle Formation on Metal Substrate Under Concentration-Limited Condition

Remote activation by green-light irradiation of shape memory epoxies containing gold nanoparticles

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