نتایج جستجو برای: mesoporous silica kit 6

تعداد نتایج: 1021345  

2007
Toshiyuki Yokoi

1. 1. Well-ordered Mesoporous Materials FSM-16 and M41S materials with regularly ordered mesopore arrangements and narrow pore-size distributions were fi rst described in the early 1990s1),2), and the mesostructures of silica and various metal oxides have since attracted much attention from chemists and materials scientists because of emerging applications in catalysis, adsorption, sensors, and...

Journal: :Nature chemistry 2009
Yu Han Daliang Zhang Leng Leng Chng Junliang Sun Lan Zhao Xiaodong Zou Jackie Y Ying

Ordered porous materials with unique pore structures and pore sizes in the mesoporous range (2-50 nm) have many applications in catalysis, separation and drug delivery. Extensive research has resulted in mesoporous materials with one-dimensional, cage-like and bi-continuous pore structures. Three families of bi-continuous mesoporous materials have been made, with two interwoven but unconnected ...

2013
Maria Pilar Garcia Clemente Guillermo Lázaro Francisco J. Fernández-Alvarez Manuel Iglesias Cristina Horna Eugenio Vispe Rodrigo Sancho Fernando J. Lahoz Marta Iglesias Jesús J. Pérez-Torrente Luis A. Oro

The new rhodium(I) complexes [Rh(Cl)(COD)(R-NHC-(CH2)3Si(O Pr3)3)] (R = 2,6-diisopropylphenyl (2a); n-butyl (2b)) have been synthesised and fully characterised. The study of their application as ketone hydrosilylation catalysts showed a clear N-substituent effect, 2a being the most active catalyst precursor. Complex 2a has been immobilised in the mesoporous materials MCM-41 and KIT-6. The new h...

Journal: :Chemical communications 2013
Adem Yildirim Gokcen Birlik Demirel Rengin Erdem Berna Senturk Turgay Tekinay Mehmet Bayindir

A facile self-assembly method is described to prepare PEGylated silica nanocarriers using hydrophobic mesoporous silica nanoparticles and a pluronic F127 polymer. Pluronic capped nanocarriers revealed excellent dispersibility in biological media with cyto- and blood compatibilities.

Journal: :Journal of the American Chemical Society 2013
Rafael Silva Damien Voiry Manish Chhowalla Tewodros Asefa

The oxygen reduction reaction (ORR)-one of the two half-reactions in fuel cells-is one of the bottlenecks that has prevented fuel cells from finding a wide range of applications today. This is because ORR is inherently a sluggish reaction; it is also because inexpensive and sustainable ORR electrocatalysts that are not only efficient but also are based on earth-abundant elements are hard to com...

Journal: :Chemical communications 2014
Meihua Yu Surajit Karmakar Jie Yang Hongwei Zhang Yannan Yang Peter Thorn Chengzhong Yu

A facile approach has been developed to prepare ultra-small hybrid silica spheres with a diameter of ∼10 nm, which show highly enhanced penetration ability in 3D glioma spheroids compared to conventional mesoporous silica nanoparticles.

A. Beitollahi, H.R. Rezaie, M.S. Toprak, N. Najmoddin,

The synthesis of mesoporous CuFe2O4 spinel by several nanocasting strategies (i.e., multi-step nanocasting, one step nanocasting, modified solid-liquid), in which copper and iron nitrates are used as precursors and Pluronic P123 as surfactant, is explored. We have also checked the effect of pH, citric acid and sodium citrate in multi-step nanocasting method. The modified solid-liquid method whi...

The idea of smart inhibitors is based on the principle that an inhibitor is used where needed. This will reduce the use of inhibitors and protect materials in hostile environments. On the other hand, direct addition of the inhibitor within the coating can be harmful, resulting in the loss of inhibitors ability, deterioration in the coating or both of them. An appropriate method for solving thes...

Journal: :Chemical communications 2008
Harun Tüysüz Massimiliano Comotti Ferdi Schüth

Cubic ordered mesoporous Co3O4, prepared via the nanocasting pathway using KIT-6 as hard template, was found to be an excellent catalyst for low temperature CO oxidation, with the activity clearly depending on surface area and pore systems of the catalysts.

Journal: :Chemical communications 2010
Byung Mun Jung Min Soo Kim Woo Jin Kim Ji Young Chang

We used periodic mesoporous silica particles for molecular imprinting. The imprinted silica particles showed fast kinetic binding for the template due to their nanosized wall thickness and high surface area.

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