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2013 | 11 | 10 | 1689-1698
Tytuł artykułu

A silica-silver nanocomposite obtained by sol-gel method in the presence of silver nanoparticles

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Silver nanoparticles (AgNPs) were obtained by a redox reaction, using a glucose-containing cyclosiloxane as a reduction agent and stabilizer. Then the AgNPs aqueous solution was used as the reaction medium for the sol-gel process, starting from tetraethylorthosilicate (TEOS) as silica precursor. The nanocomposite material resulted (SilAg) after solvent removal, aging and calcination and was investigated by infrared spectroscopy (FT-IR), atomic force microscopy (AFM), scanning electron microscopy coupled with energy dispersive X-ray system (SEM/EDX), transmission electron microscopy (TEM), energy-dispersive X-ray fluorescence spectroscopy (EDXRF), X-ray diffraction (XRD) and dynamic vapor sorption (DVS). The results were compared to model silicas obtained without silver. A higher condensation degree in SilAg was obtained due to the basic medium used in the first step and was confirmed by a sorption capacity lower than for the model silicas. The solid surface area calculated with GAB analysis using DVS data for the water vapors is 210 m2 g−1. The nanocomposite showed good catalytic activity for hydrogen peroxide decomposition. [...]
Słowa kluczowe
Wydawca

Czasopismo
Rocznik
Tom
11
Numer
10
Strony
1689-1698
Opis fizyczny
Daty
wydano
2013-10-01
online
2013-07-19
Twórcy
  • “Petru Poni” Institute of Macromolecular Chemistry, RO700487, Iasi, Romania, raclesc@icmpp.ro
  • “Petru Poni” Institute of Macromolecular Chemistry, RO700487, Iasi, Romania
autor
  • “Petru Poni” Institute of Macromolecular Chemistry, RO700487, Iasi, Romania
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-013-0294-4
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