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Synthesis and characterization of CdS nanoparticles embedded in a polymethylmethacrylate matrix

2004; Elsevier BV; Volume: 284; Issue: 2 Linguagem: Inglês

10.1016/j.jcis.2004.10.019

1095-7103

Lucia Pedone, Eugenio Caponetti, Maurizio Leone, Valeria Militello, Valentina Pantò, Stefano Polizzi, Maria Luisa Saladino,

TiO2 Photocatalysis and Solar Cells

CdS nanopowder capped with sodium bis(2-ethylhexyl)sulfosuccinate was synthesized by using water-in-oil microemulsions. The CdS nanoparticles of about 5 nm obtained were embedded in polymethylmethacrylate matrix by a photocuring process. The transparent yellow solid compound was characterized by optical absorption and emission spectroscopy, high-resolution transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The properties of this compound were compared with those of the nanopowder dispersed in heptane and in methylmethacrylate. The results obtained indicate that the nanoparticles are homogeneously dispersed in the matrix and do not change in size during the embedding process. Even if the surface slightly changes its luminescence properties, as a consequence of the different new chemical environment, the final product seems to be suitable for practical applications.