Sökning: "Mesostructured silica"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Mesostructured silica.

  1. 1. Colloidal suspensions of mesostructured silica

    Författare :Andreas Berggren; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; formation mechanism; non-ionic surfactants; silica; inorganic silica; colloidal suspension; control of particle size;

    Sammanfattning : Mesoporous silica is a porous material with walls made of silica and pores in the size range of 2-50 nm. Since the silica most often is amorphous, the material lacks short range order but the pores may be arranged in different structures generating a long-range order. LÄS MER

  3. 2. Development of new nanomaterials syntheses for mesostructured TiO2 and SiO2

    Författare :Erik Nilsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; X-ray diffraction; microemulsion synthesis; silica; high-resolution electron microscopy; gelation; nonionic amphiphiles; EISA; titania; mesostructured; waterglass;

    Sammanfattning : Mesostructured materials is a class of materials within the concept nanomaterials andcharacterized by structural features on the length scale 2-50 nm. This group of materials isinteresting for several applications such as, membrane and separation technology, heterogeneouscatalysis, controlled release, adsorption of pollutants, solar energy conversion, electrode materialsetc. LÄS MER

  4. 3. Formation of mesostructured silica based on non-ionic interactions

    Författare :Andreas Sundblom; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mesoporous silica; non-ionic block co-polymer; SBA-15.; colloidal suspension; silica-PEO interaction; formation mechanism; inorganic silica;

    Sammanfattning : Mesostructured silica is a material consisting of a silica matrix with an organization in the meso range of 2-50 nm. The silica matrix is most often amorphous while the organization, induced by a structure directing agent, may generate a long-range mesoorder. LÄS MER

  5. 4. Mesostructured materials : Synthesis towards applications

    Författare :Nina Andersson; Osamu Terasaki; Peter Alberius; Anders Palmqvist; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi; oorganisk kemi; Inorganic Chemistry;

    Sammanfattning : A new class of materials with well-defined structures on mesoscopic (2-50 nm) length scales has attracted considerable interest during the last decade. These mesostructured mataterials are formed from the self-assembly of amphiphillic molecules and inorganic precursors. LÄS MER

  7. 5. Mesostructured particulate silica materials with tunable pore size : Synthesis, characterization and applications

    Författare :Malin Helena Sörensen; Per Claesson; Viveka Alfredsson; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mesoporous materials; aersol-based process; emulsion-based process; biocatalysis; sustained release; 3D hexagonal; 2D hexagonal; powder; spherical particles; liquid crystalline phases; AFM-porosimetry; Pluronic; Chemistry; Kemi;

    Sammanfattning : Colloidal assemblies of surfactants and polymers in aqueous solutions have been used by human mankind for hundreds of years and they are of great importance in many of our technological processes, such as fabrication of soap and papermaking. Less than two decades ago the idea of using colloidal assemblies as templates of inorganic materials was borne. LÄS MER