MATERIAL COMPUESTO QUE COMPRENDE UNA MATRIZ POROSA DE CARBON AMORFO Y NANOPARTICULAS DE BI OBTENIBLE MEDIANTE UN PROCEDIMIENTO SOL-GEL, PROCEDIMIENTO DE OBTENCION Y SU USO
The invention relates to a composite material comprising a porous matrix of amorphous carbon having a pore size of between 2 and 1000 nm and containing a homogenous arrangement of embedded spherical nanoparticles, having a size of between 5 and 500 nm, of at least one metal element that is Bi in the...
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Format | Patent |
Language | Spanish |
Published |
16.04.2015
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Abstract | The invention relates to a composite material comprising a porous matrix of amorphous carbon having a pore size of between 2 and 1000 nm and containing a homogenous arrangement of embedded spherical nanoparticles, having a size of between 5 and 500 nm, of at least one metal element that is Bi in the tetragonal crystalline phase, which can be obtained using a method that comprises at least the following steps: a) preparing a sol-gel liquid composition in the form of a solution containing at least one organic precursor of the matrix in a solvent; b) depositing the liquid solution in a mould or on a support in the form of a layer or microstructure; c) condensing the liquid solution containing the organic precursor in the mould or the support until a wet organic gel is obtained; d) drying the wet get; and e) pyrolysing the gel in an inert atmosphere at a temperature equal to or greater than 800ºC. According to the invention, at least one precursor of Bi is added either: in the first step (a), said precursor(s) being dissolved in the solvent together with the organic precursor in order to form part of the sol-gel composition; or in the third step (c), impregnating the wet organic gel with a solution of the precursor of Bi in a solvent prior to drying. The material has a Bi surface area of between 2.5·102 cm2/g and 2.5·105 cm2 /g, and the matrix has an intrinsic accessible porosity of between 10% and 95% in relation to the non-porous amorphous carbon. |
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AbstractList | The invention relates to a composite material comprising a porous matrix of amorphous carbon having a pore size of between 2 and 1000 nm and containing a homogenous arrangement of embedded spherical nanoparticles, having a size of between 5 and 500 nm, of at least one metal element that is Bi in the tetragonal crystalline phase, which can be obtained using a method that comprises at least the following steps: a) preparing a sol-gel liquid composition in the form of a solution containing at least one organic precursor of the matrix in a solvent; b) depositing the liquid solution in a mould or on a support in the form of a layer or microstructure; c) condensing the liquid solution containing the organic precursor in the mould or the support until a wet organic gel is obtained; d) drying the wet get; and e) pyrolysing the gel in an inert atmosphere at a temperature equal to or greater than 800ºC. According to the invention, at least one precursor of Bi is added either: in the first step (a), said precursor(s) being dissolved in the solvent together with the organic precursor in order to form part of the sol-gel composition; or in the third step (c), impregnating the wet organic gel with a solution of the precursor of Bi in a solvent prior to drying. The material has a Bi surface area of between 2.5·102 cm2/g and 2.5·105 cm2 /g, and the matrix has an intrinsic accessible porosity of between 10% and 95% in relation to the non-porous amorphous carbon. |
Author | GICH GARCIA, MARTI FERNANDEZ SANCHEZ, CESAR ROIG SERRA, ANNA COTET, LIVIU COSMIN |
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Snippet | The invention relates to a composite material comprising a porous matrix of amorphous carbon having a pore size of between 2 and 1000 nm and containing a... |
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SubjectTerms | ARTIFICIAL STONE CASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIME, MAGNESIA MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES MEASURING METALLURGY NANOTECHNOLOGY PERFORMING OPERATIONS PHYSICS POWDER METALLURGY REFRACTORIES SLAG SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TESTING TRANSPORTING TREATMENT OF NATURAL STONE WORKING METALLIC POWDER |
Title | MATERIAL COMPUESTO QUE COMPRENDE UNA MATRIZ POROSA DE CARBON AMORFO Y NANOPARTICULAS DE BI OBTENIBLE MEDIANTE UN PROCEDIMIENTO SOL-GEL, PROCEDIMIENTO DE OBTENCION Y SU USO |
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