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Cellophane and filter paper as cellulosic support for silver nanoparticles and its thermal decomposition catalysis
- da Silva Pereira, Bruna, Silva, Marcela Fernandes, Bittencourt, Paulo Rodrigo Stival, de Oliveira, Daniela Martins Fernandes, Pineda, Edgardo Alfonso Gómez, Hechenleitner, Ana Adelina Winkler
- Carbohydrate polymers 2015 v.133 pp. 277-283
- Fourier transform infrared spectroscopy, X-ray diffraction, aqueous solutions, biocompatibility, catalytic activity, cellophane, cellulose, hydroxylamine, nanocomposites, nanoparticles, nanosilver, paper, polyvinylpyrrolidone, scanning electron microscopy, silver nitrate, thermal degradation, thermal properties, thermogravimetry
- Silver nanoparticles (AgNPs) have attracted great attention due to its optical, electrical and thermal properties. Cellulosic supports for these nanoparticles are of particular interest because of its availability, flexibility and biocompatibility. In this work, AgNPs were synthesized using two cellulosic materials, cellophane (CP) and filter paper (FP), as matrix support. Cellulosic materials were immersed in an aqueous solution of silver nitrate containing polyvinylpyrrolidone (PVP) and then reduced with hydroxylamine. The obtained nanocomposites (CP-AgNPs and FP-AgNPs) were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (DRX) and scanning electron microscopy (SEM). AgNPs of near 15nm anchored onto cellulosic surfaces were detected. The thermal properties of these materials were investigated through thermogravimetry (TG). Their kinetic of thermal decomposition was studied by the Vyasovkin method of dynamic isoconvertion, which indicated a catalytic effect of AgNPs in the cellulose thermal decomposition reaction.