SILICA - Avhandlingar.se

Stockholms universitet - CERN Indico

Figure S13 Pore size distributions (NLDFT) of P_TMBx-dia and P_TIPBx-dia (x = 0, 0.2, 0.4, and 0.8). Figure S14 Powder XRD pattern of dried sample (P_TMB20-dia). Figure S15 Pore size distributions (NLDFT) of dried samples (M-dia and M_TIPB-dia). Table S1 Swelling ratios of TMB and TIPB.

Chemistry of Materials 2011, 23 (8) , 2107-2112. DOI: 10.1021/cm1033723. Sujit Manna, Kajari Das and S. K. De. Controlling the morphology and pore size of mesostructured silica nanoparticles: the role of the iron oxidation state. Coelho JV(1), Guedes MS, Barrera D, Sapag K, Pereira MC, de Oliveira LC. Author information: (1)Departamento de Química, ICEx, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil. pore size 0.98 cm3/g pore volume 2.1-2.7 nm pore size surface area spec. surface area ~1000 m2/g (BET) bp 2230 °C(lit.) Description Application Adsorbant, catalyst support, nanoscale template Silicon dioxide, also known as silica (from the Latin silex), is a chemical compound that is an oxide of silicon with the chemical formula SiO2.

Surface Properties of Synthesized Nanoporous Carbon and

Sörensen, Malin Helena, 1979- (författare) ISBN 9789174152432 Publicerad: Stockholm : Skolan för kemivetenskap, Kungliga Tekniska högskolan, 2009 Engelska 70 s. A multifunctional role of trialkylbenzenes for the preparation of aqueous colloidal mesostructured/mesoporous silica nanoparticles with controlled pore size, particle 2010-01-11 · Due to the walls of silica pores containing free silanol groups which can react with the OH functional groups of Bufalin, the encapsulation efficiency of the mesostructured nanocables can be as high as 33% with a variance less than 10%. to pore size of the mesoporous silica that was too small to incorporate the loads of high nickel.

PORE SIZE - Dissertations.se

DOI: 10.1021/cm1033723.

The gels were nanoparticles into the pores of mesostructured silica. The aim of this paper was to verify a possible correlation between the pore-size of mesoporous silica nanoparticles (MSNs) and the sizes of gold nanoparticles (AuNPs) obtained by an impregnation of gold(III) chloride hydrate solution in the MSNs, followed by a specific thermal treatment. Mesoporous silica nanoparticles with tunable pore diameter were synthesized via a surfactant-assisted We report a one-step synthesis of magnetic helical mesostructured silica (MHMS) by self-assembly of an achiral surfactant, magnetic nanocrystals with stearic acid ligands and silicate. This core-shell structured material consists of an Fe₃O₄ superparamagnetic nanocrystal core and a highly ordered periodic helical mesoporous silica shell. We propose that the formation of At present, mesostructured silica nanoparticle (MSN) has attracted great fundamental and applied research efforts due to its excellent properties such as large surface area (> 1000 m2 g-1), thermal and mechanical stability, highly uniform pore size distribution, tunable pore size, high adsorption capacity Novel mesostructured silica microparticles are synthesized, characterized, and investigated as a drug delivery system (DDS) for antimicrobial applications. The materials exhibit a relatively high density (0.56 g per 1 g SiO 2) of benzalkonium chloride (BAC), pore channels of 18 Å in width, and a high surface area (1500 m 2 /g). 17 Apr 2020 Water confined in mesoporous silica plays a central role in its many uses Here, the influence of pore diameter (2.5–5.4 nm) on water hy F. J. Gutierrez, “ Adsorption and hydrophobic properties of mesostructured M A series of novel mesoporous silica materials with ultra-large pores (20 to 40 nm in stability and can maintain the mesostructure in boiling water over 5 days.
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In the second part of the thesis work, mesoporous spheres with large pore size, having either hydrophilic or hydrophobic surface properties, were used as carriers of an enzyme, lipase. The enzymatic activity of lipase was increased onto the hydrophobic surface, compared to lipase immobilized into the hydrophilic support as well as for lipase free in solution. The word meso is referred to one specific range of pore size from 2 to 50 nm.

The synthesized LP-MSNs are 100-200 nm in diameter and are composed of cage-like pores organized in a cubic mesostructure.
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Physical Chemistry - Research Outputs - Lund University

used large pore (∼20 nm) mesoporous silica nano-particles (70 300 nm) to adsorb large plasmid DNA (5256bp).15 large pore size with narrow pore size distribution, high surface area and easy surface functionalization. A high number of different functionalities have been incorporated onto the SBA-15 material [24]. Two of the most attractive functionalities are amino [25-29] and carboxylic acid groups [30, 31]. There are two main approaches to the silica The mixtures quently, there is extensive interest in the development were stirred during 30 min and then autoclaved during of new methodologies to obtain well-dispersed metal 20 h under static conditions at 115 °C. The gels were nanoparticles into the pores of mesostructured silica. The aim of this paper was to verify a possible correlation between the pore-size of mesoporous silica nanoparticles (MSNs) and the sizes of gold nanoparticles (AuNPs) obtained by an impregnation of gold(III) chloride hydrate solution in the MSNs, followed by a specific thermal treatment. Mesoporous silica nanoparticles with tunable pore diameter were synthesized via a surfactant-assisted We report a one-step synthesis of magnetic helical mesostructured silica (MHMS) by self-assembly of an achiral surfactant, magnetic nanocrystals with stearic acid ligands and silicate.