Effect of metallic Ag growth on the electrical resistance of 3D flower-like Ag4V2O7 crystals
Nenhuma Miniatura disponível
Data
2017-06-01
Autores
de Oliveira, Regiane C.
Zanetti, Sonia M. [UNESP]
Assis, Marcelo
Penha, Maya
Mondego, Mayara
Cilense, Mario [UNESP]
Longo, Elson [UNESP]
Cavalcante, Laécio S.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
In this communication, we report for the first time the nucleation and growth of metallic Ag nanoparticles on the surface of 3D flower-like Ag4V2O7 crystals, induced by accelerated electron beam irradiation. The growth of metallic Ag on the surfaces of Ag4V2O7 crystals were studied by transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDXS). According to TEM images and EDXS analyses, exposure to the electron beam induces a reduction process and the growth of metallic Ag nanoparticles on the surface of Ag4V2O7 crystals. Moreover, the inductively coupled plasma optical emission spectrometry measurements indicated an excess of Ag and V vacancies at Ag4V2O7 lattice. Finally, it was observed that the electrical resistance varies considerably with the exposure time to electron beam irradiation.
Descrição
Palavras-chave
Ag4V2O7 crystals, electrical resistance, metallic Ag nanoparticles
Como citar
Journal of the American Ceramic Society, v. 100, n. 6, p. 2358-2362, 2017.