2013
DOI: 10.1590/s0100-40422013000700008
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Influência dos precursores de prata no crescimento de nanopartículas metálicas em vidros óxidos de metais pesados

Abstract: Recebido em 21/9/12; aceito em 11/4/13; publicado na web em 4/6/13 INFLUENCE OF SILVER PRECURSORS ON GROWTH OF METALLIC NANOPARTICLES IN HEAVY METAL OXIDEGLASSES. In this work we report a systematic study on the influence of the chemical nature of silver precursors on the formation of glass-ceramics from oxide glasses. Thermal, structural and optical properties were analyzed as a function of the glass composition. Controlled crystallization was achieved by thermal treatment of the samples above glass transitio… Show more

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“…The obtained results are also summarized in Table 1. AgNO 3 showed an endothermic peak at 115°C and ΔH = −889.88 J g −1 (onset 80°C and termination 165°C) attributed to the fusion, 56 while HA showed an endothermic peak at 118°C and ΔH = −330.4 J g −1 (area of integration between the points of 70 and 182°C). The HA showed a broad peak due to the heterogeneity of the compound, in which water molecules had weaker interactions with a lower vaporization temperature and stronger interactions with a higher vaporization temperature.…”
Section: Thermal Analysismentioning
confidence: 99%
“…The obtained results are also summarized in Table 1. AgNO 3 showed an endothermic peak at 115°C and ΔH = −889.88 J g −1 (onset 80°C and termination 165°C) attributed to the fusion, 56 while HA showed an endothermic peak at 118°C and ΔH = −330.4 J g −1 (area of integration between the points of 70 and 182°C). The HA showed a broad peak due to the heterogeneity of the compound, in which water molecules had weaker interactions with a lower vaporization temperature and stronger interactions with a higher vaporization temperature.…”
Section: Thermal Analysismentioning
confidence: 99%