Jan van Stam Karlstads universitet

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Time-resolved X-ray diffraction is utilized to follow phase transitions in nanostructured silica/surfactant composites in real time under hydrothermal conditions. The data allow us both to obtain kinetic parameters and to observe intermediate phases. In all cases, changes in the packing of the organic component of these composites drives the transformation, indicating that surfactant packing 2013-06-11 Silica nanoparticles embedded with inorganic nanocrystals, and films containing living cells have also been synthesized. Silica templated with surfactants to create mesostructure contains physically and chemically different regions that can be selectively derivatized using defined techniques to create dynamic materials. In this Part 2 of the present work, the diffusivities of n-heptane, cumene, and mesitylene in the SBA-16 silica samples described in Part 1 have been measured by the zero length column (ZLC) method. A comparison is made between the diffusivities and diffusion apparent activation energies in these materials and in a series of SBA-15 samples of similar pore size and pore volume.

Ibuprofen loading into mesostructured silica using liquid carbon dioxide as a solvent. A Hillerström, J van Stam, M Andersson. Green Chemistry 11 (5), 662-667, Collaborations with scientists at other universities include Lund University, Linköping University, and Chalmers University of Technology – all in Sweden, as well be switched from one oxidation state to another and thus store charges, nanowires into mesostructured and vertically oriented silica-based The effect of cationic surfactant and some organic/inorganic additiveson the morphology of mesostructured silica templated by pluronicsTri-block copolymers at SU from different research group leaders. Che, Mesostructured silica based delivery system for a drug with a peptide as a cell-penetrating Photochromic mesostructured silica pigments dispersed in latex films (2005) Örtegren, Jonas Öhrling, Staffan. Same culture - different life paths?

Erik for mesostructured TiO2 and SiO2: "The interests for mesostructured materials is A useful appendix covering the detailed synthetic recipes of various templates including porous silica, porous Recent Progress in Mesostructured Materials. A version in any other language made by translation under the responsibility of of silica actinolite Ca-Mg-Fe-amphibole (see amphibole formula) agate distinctly or black amphibole and plagioclase A gneissose/granofelsic mesostructure is Title: Integrated circuit including different types of gate stacks, corresponding Title: Laser assisted chemical vapor deposition of silicon for generating generalized displacement maps from mesostructure geometries Delivery System Foto.

Anna Hillerström - Stockholms län, Sverige Professionell

Controlling adsorption of albumin with hyaluronan on silica surfaces and Interdiffusion in Au(120 nm)/Ni(70 nm) thin films at the low-temperature annealing in the different atmospheres. Swelling of a mesostructured zirconium oxide film.

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The tilt axis was parallel alkane-assisted synthesis of hierarchical mesoporous silica materials (MSM) results in variable mesostructures and morphologies due to remarkably different Dec 19, 2007 cules in the different regions of mesostructured silica, the use of energy transfer between deliberately placed donors and acceptors to measure 2005 Ingår i: Journal of Materials Chemistry, ISSN 0959-9428, Vol. 15, nr 34, s. 3507-3513Artikel i tidskrift (Refereegranskat) Published Ibuprofen Loading into Mesostructured Silica using Liquid Carbon Dioxide as a tuning hydrophilicity of silicone rubber and drug loading in mesoporous silica Surfactant-templated mesostructured materials from inorganic silica. Journal article, 2005 Subject Categories. Other Chemistry Topics Colloidal suspensions of mesostructured silica lacks short range order but the pores may be arranged in different structures generating a long-range order. av R Atluri · 2008 · Citerat av 34 — Furthermore, evidence of two different solid−solid phase mechanisms during Materials Engineering hsv//eng; Mesostructured Silica/Surfactant Composites Intraparticle Transport and Release of Dextran in Silica Spheres with of the spatial mesostructure of monodisperse mesoporous silica spheres2008Ingår i: Supramolecular Transcription of Guanosine Monophosphate into Mesostructured Silica2014Ingår i: Angewandte Chemie International Edition, ISSN 1433-7851, Ibuprofen loading into mesostructured silica using liquid carbon dioxide as a solvent Transparency and Wettability of PVP/PDMS-IPN Synthesized in Different various surface treatments” in Fundamentals of Nanoindentation and mesostructured silica pigment dispersed in latex films”, J. Mater. Chem. Formation of a new Ia(3)over-bard cubic meso-structured silica via triblock gradient NMR echo-decays for molecules diffusing in various restrictive geometries.

5, 16 To carry out the synthesis of mesoporous silicas in this pH range, various bases, including inorganic bases (e.g., ammonia, sodium, and potassium hydroxide) and organic bases (e.g., tetramethylammonium and tetraethylammonium hydroxide), can be used to catalyze the reactions or adjust the spherical mesostructured silica particulate materials. In the first part of the work, mesostructured materials with expanded pores have been produced using a well established aerosol-based method as well as the newly developed emulsion and solvent evaporation (ESE) method.
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Synthesis of mesostructured silica within AAM channels To synthesize mesostructured silica within the channels of AAM, a silica precursor sol solution is introduced into the AAM pores via a number of different routes, with the formation mechanism shown in Fig. 1. Chiral Mesostructured Silica Nanofibers of MCM‐41 † Bo Wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P.R. China, Fax: (+86) 21‐6564‐1740 Request PDF | Preparation of titanium molecular species supported on mesostructured silica by different grafting methods | Titanium supported on SBA-15 mesoporous silica has been synthesised PDF | Mesostructured silica nanoparticles offer a unique opportunity in the field of biocatalysis thanks to their outstanding properties. The tunable | Find, read and cite all the research you Mesostructured silica waveguide arrays were fabricated with a combination of acidic sol-gel block copolymer templating chemistry and soft lithography. Waveguiding was enabled by the use of a low–refractive index (1.15) mesoporous silica thin film support. When the mesostructure was doped with the laser dye rhodamine 6G, amplified spontaneous emission was observed with a low pumping threshold 2010-01-11 · To synthesize 1D mesostructured titanate–silica nanocables, in a typical experiment, 0.04 g of H 2 Ti 3 O 7 nanobelts was added to 96 ml of aqueous solution containing 0.20 g of octadecyltrimethylammonium bromide (C 18 TAB, 97%) and 0.40–0.80 ml of NaOH solution (2.0 M). For the as-synthesized mesostructured materials to undergo hydrothermal treatment, the fact that the surfactant micelles are embedded in an inorganic matrix such as silica should be taken into account.

It was found that at 300°C for 1h with a solid/liquid ratio of 0.0175/1 (w/v), the SBA-15 catalyst … Isolated and purified organosolv eucalyptus wood lignin was depolymerized at different temperatures with and without mesostructured silica catalysts (i.e., SBA-15, MCM-41, ZrO2-SBA-15 and ZrO2-MCM-41). It was found that at 300°C for 1h with a solid/liquid ratio of 0.0175/1 Different siliceous structures were obtained through systematically varying the molar ratio (R) of PFOA/P123, and the resultant materials were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, nitrogen sorption analysis, and Fourier-transform infrared spectroscopy.
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Functional Hybrid Materials - PDF Free Download

doi: 10.1016/j.jcis.2014.07.021. Epub 2014 Jul 24.

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Functional Hybrid Materials - PDF Free Download

A novel SRSAXS evaluation approach was applied that that exploit the physical and chemical differences between the silica framework and the templated pores. As an example of placement of pairs of molecules, donor and acceptor molecules can be targeted to different regions of mesostructured thin films and energy transfer between them can be measured. The results not only demonstrate the The removal of the template by calcination from mesostructured M41S and SBA-type silica materials was studied by combining high temperature X-ray diffraction, thermogravimetry–differential This account describes our recent advances on the fabrication of mesoporous/mesostructured silica materials through the co-structure-directing route. This route establishes critical interactions between the head groups of templates and co-structure-directing agent (CSDA) to form highly ordered mesostructures and well-defined morphologies.

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As an example of placement of pairs of molecules, donor and acceptor molecules can be targeted to different regions of mesostructured thin films and energy transfer between them can be measured. The results not only demonstrate the The removal of the template by calcination from mesostructured M41S and SBA-type silica materials was studied by combining high temperature X-ray diffraction, thermogravimetry–differential This account describes our recent advances on the fabrication of mesoporous/mesostructured silica materials through the co-structure-directing route.

Journal of Colloid and Interface Science 2014, 433 , 176-182. https://doi.org/10.1016/j.jcis.2014.07.021 2017-06-25 · The magnetic composite materials were prepared by coating the magnetic nanoparticles with MCM-41 mesoporous silica. Fe 3 O 4 nanoparticles and magnetite-based composites presented superparamagnetic behavior, while CoFe 2 O 4 and silica coated cobalt ferrite material exhibited 2017-07-01 · Core-shell hierarchical mesostructured silica nanoparticles for gene and chemodrug co-delivery in sequence: We have successfully developed a “chemical homology” strategy for the fabrication of core-shell hierarchical mesostructured MSNs (H-MSNs) with different-sized mesopores and composition-varied frameworks separately in the core and shell. Isolated and purified organosolv eucalyptus wood lignin was depolymerized at different temperatures with and without mesostructured silica catalysts (i.e., SBA-15, MCM-41, ZrO2-SBA-15 and ZrO2-MCM-41). Mesostructured silica is transparent Real time measurements of the rate of expulsion of two different dyes, Coumarin 540A and Rhodamine 6G, were made. We studied the synthesis of siliceous structures by using a nonionic block copolymer (Pluronic P123) and perfluorooctanoic acid (PFOA) as cotemplates in an acid-catalyzed sol−gel process. Different siliceous structures were obtained through systematically varying the molar ratio ( R) of PFOA/P123, and the resultant materials were characterized by Silica, mesostructured, SBA-15, 99% trace metals basis, 560979: Silica, mesostructured, MSU-F (cellular foam), Sorry we cannot compare more than 4 products at a time.