Formation and characterization of porous silicon–samarium/gadolinium nanocomposites: effect of substrate oxidation and biosynthesis process
Por:
Perdigon-Lagunes, P, Ascencio, JA, Agarwal, V
Publicada:
1 dic 2014
Resumen:
Samarium and gadolinium nanoparticles synthesized by bioreduction process have been incorporated into nanostructured porous silicon template to form a nanocomposite. The structural and optical properties of PS–Gd and PS–Sm nanocomposites have been studied through TEM, SEM and UV–Vis spectroscopy. Extent of infiltration has been verified through reflectance interference Fourier transform spectroscopy as a function of substrate oxidation conditions. The substrates oxidized at 600 °C showed the maximum infiltration and the corresponding change of optical thickness due to nanoparticles. Such biodegradable nanocomposites in the form of particles can have potential applications in localized drug delivery and enhancement of the image contrast and optoelectronic devices. The results here reported open an energy-cheap procedure to take advantages of small rare earth nanoparticles and produced nanocomposites with their immersion in SiO2 substrates, with the perspective to be replied in other similar substrates under controlled conditions. © 2014, Springer-Verlag Berlin Heidelberg.
Filiaciones:
Perdigon-Lagunes, P:
Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico
Ascencio, JA:
Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico
Agarwal, V:
Univ Autonoma Estado Morelos, Ctr Invest Ingn & Ciencias Aplicadas, Cuernavaca 62209, Morelos, Mexico
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