SiO2-B2O3 xerogels: The problem of boron leaching
| Autor: | Antonella Profumo, L. Cucca, Piercarlo Mustarelli, Stefania Grandi, Cesare Balduini, V. Cassinelli, Corrado Tomasi |
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| Přispěvatelé: | Grandi, S, Tomasi, C, Cassinelli, V, Cucca, L, Profumo, A, Mustarelli, P, Balduini, C |
| Rok vydání: | 2012 |
| Předmět: |
Sol-gel
Materials science Silicon Borosilicate glass Inorganic chemistry Infrared spectroscopy chemistry.chemical_element Condensed Matter Physics Electronic Optical and Magnetic Materials Thermogravimetry Xerogel Nanomedicine Differential scanning calorimetry BNCT nanoparticles chemistry Borosilicate BNCT Materials Chemistry Ceramics and Composites Leaching (metallurgy) Boron |
| Zdroj: | Journal of non-crystalline solids 358 (2012): 1631–1637. doi:10.1016/j.jnoncrysol.2012.04.025 info:cnr-pdr/source/autori:Grandi S.; Tomasi C.; Cassinelli V.; Cucca L.; Profumo A.; Mustarelli P.; Balduini C./titolo:SiO2-B2O3 xerogels: The problem of boron leaching/doi:10.1016%2Fj.jnoncrysol.2012.04.025/rivista:Journal of non-crystalline solids/anno:2012/pagina_da:1631/pagina_a:1637/intervallo_pagine:1631–1637/volume:358 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2012.04.025 |
| Popis: | Borosilicate materials are of interest for many technological applications. Whereas sol-gel techniques are well suited for the preparation of these materials, the nominal concentration of boron is often not maintained, and a considerable amount of boron is lost during the preparation procedure. In this work we deal with the synthesis of borosilicate systems in order to analyse the problem of the boron loss. Different sol-gel precursors of B2O3 were explored and organically modified silicon alcoxide were tested, in addition P2O5 co-doping was proposed. IR spectroscopy, differential Scanning Calorimetry, Thermogravimetry and ICP-OES analyses were performed. Sol-gel synthesis of SiO2-B2O3 xerogels with a high boron content (>18 wt.%) was successfully obtained by employing trimethoxyboroxine and 3-aminopropyltriethoxysilane. (C) 2012 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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