نتایج جستجو برای: mesoporous material

تعداد نتایج: 373516  

In this work, we report synthesis and characterization of Bi2O3 nanoparticles loaded on mesoporous MCM-41 nanoparticles by a simple solid-state dispersion (SSD) method. Monoclinic bismuth oxide nanoparticles were prepared by polyacrylamide gel method and used as loading materials on the prepared mesoporous MCM-41 as a supporting material. Fourier transform infrared spectroscopy (FT-IR), X-ray p...

2012
Maneerat Ekkapongpisit Antonino Giovia Carlo Follo Giuseppe Caputo Ciro Isidoro

BACKGROUND AND METHODS Nanoparticles engineered to carry both a chemotherapeutic drug and a sensitive imaging probe are valid tools for early detection of cancer cells and to monitor the cytotoxic effects of anticancer treatment simultaneously. Here we report on the effect of size (10-30 nm versus 50 nm), type of material (mesoporous silica versus polystyrene), and surface charge functionalizat...

Journal: :iranian journal of catalysis 2013
hamid reza pouretedal mina ahmadi

the direct and indirect methods in solvent media and grinding method in a solvent-free media were used to prepare the mcm-41/zno and mcm-48/zno photocatalysts. the x-ray diffraction (xrd) patterns showed that zinc oxide nanoparticles were put into mcm-41 and mcm-48 substrates and there were zno crystallites as secondary phase in the extra framework of mesoporous materials. the decrease of surfa...

In this work, we report synthesis and characterization of Bi2O3 nanoparticles loaded on mesoporous MCM-41 nanoparticles by a simple solid-state dispersion (SSD) method. Monoclinic bismuth oxide nanoparticles were prepared by polyacrylamide gel method and used as loading materials on the prepared mesoporous MCM-41 as a supporting material. Fourier transform infrared spectroscopy (FT-IR), X-ray p...

Ordered Mesoporous Carbon (OMC) represents an interesting material for electric double layer capacitors which has the high surface area, easily accessed ordered pore channels and lower production cost. In this work, CMK-3 as promising OMC has been fabricated using the ordered mesoporous silica SBA-15 as a template. The structure and morphology of CMK-3 are characterized by X-ray diffraction...

2017
Chuan Ming Tseng Hsin Liang Chen Sz Nian Lai Ming Shiung Chen Chien Jung Peng Chia Jui Li Wei Hsuan Hung

"Carbon-based material" has demonstrated a great potential on water purification due to its strong physical adsorption to organic pollutants in the water. Three-dimensional cubic ordered mesoporous carbon (CMK-8), one of the well-known ordered mesoporous carbons, was prepared by using nanocasting method with mesoporous silica (KIT-6) as the template. In this study, CMK-8 blended with Nafion pol...

1996
Fanglin Chen Meilin Liu

Following the discovery of the MCM family of mesoporous silicates using the supramolecular templating approach,1 mesoporous materials have attracted considerable attention because of their remarkably large surface areas and narrow pore size distributions, which make them ideal candidates for catalysts, molecular sieves, and as electrodes in solid-state ionic devices. A number of related synthet...

Journal: :Chemical communications 2004
V Meynen E Beyers P Cool E F Vansant M Mertens H Weyten O I Lebedev G Van Tendeloo

A post-synthesis deposition of vanadium silicalite-1 zeolite nanoparticles in the pores of SBA-15 results in a highly ordered hexagonal templated silica material with V-silicalite zeolitic plugs, giving rise to an increased crystallinity of the amorphous mesoporous walls.

Journal: :Chemical communications 2016
B Rühle S Datz C Argyo T Bein J I Zink

A novel thermoresponsive snaptop for stimulated cargo release from superparamagnetic iron oxide core - mesoporous silica shell nanoparticles based on a [2 + 4] cycloreversion reaction (retro-Diels Alder reaction) is presented. The non-invasive external actuation through alternating magnetic fields makes this material a promising candidate for future applications in externally triggered drug del...

Journal: :Chemical communications 2008
Masataka Ohashi Mahendra P Kapoor Shinji Inagaki

Amination of phenylene moieties in crystal-like mesoporous silica hybridized with phenylene is successfully achieved with close to 28% conversion of phenylene by a two-step chemical transformation process while preserving both the ordered mesostructure and crystal-like molecular scale periodicity of the parent material.

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