نتایج جستجو برای: multi walled carbon nanotubes carboxylate mwcnts cooh

تعداد نتایج: 759321  

Introduction: Anandamide (AEA) has shown a wide spectrum of pharmacological activities including the effects against the peptic ulcer, meanwhile, the poor solubility or short half-life may negatively affect the effectiveness of this valuable cannabinoid. Based on the superior properties of carbon nanotubes (CNTs) for controlled drug delivery, we aimed to prepare AEA-CNTs complex and evaluat...

ژورنال: مواد پرانرژی 2015

In this study, the effect of copper chromite (CuO.Cr2O3) nanoparticles and multi-walled carbon nanotubes (MWCNTs) as nanocatalysts on the thermal decomposition behavior of ammonium perchlorate (AP) has been investigated using Differential Scanning Calorimetry (DSC). At first, copper chromite (CuO.Cr2O3) nanoparticles were prepared by inverse co-precipitation method. In this method, cupric nitra...

Journal: :Nanoscale 2015
Jaime Mateos-Gil Laura Rodríguez-Pérez María Moreno Oliva Georgios Katsukis Carlos Romero-Nieto Ma Ángeles Herranz Dirk M Guldi Nazario Martín

The reactivity of several carbon nanoforms (CNFs), single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs) and graphene, has been investigated through a combination of arylation and click chemistry Cu(I)-mediated azide-alkyne cycloaddition (CuAAC) reactions. The approach is based on the incorporation of electroactive π-extended tetrathiafulvalene (exTTF) units into the t...

2014
Omid Moradi Mehdi Norouzi Ali Fakhri Kazem Naddafi

Drinking water resources may be contaminated with Ethidium Bromide (EtBr) which is commonly used in molecular biology laboratories for DNA identification in electrophoresis. Carbon nanotubes are expected to play an important role in sensing, pollution treatment and separation techniques. In this study adsorption of Ethidium Bromide on single-walled carbon nanotubes (SWCNTs) and carboxylate grou...

2009
D. Kolacyak J. Ihde A. Hartwig U. Lommatzsch

Multi-walled carbon nanotubes (MWCNTs) were functionalized using nonequilibrium atmospheric pressure plasma. The efficiency of the atmospheric pressure plasma treatment is characterised by XPS, FT-IR spectroscopy and contact angle measurements. Scanning electron microscopy (SEM) reveals that the MWCNT structure can be preserved when wet feeding into the plasma is applied.

Journal: :Chemical communications 2010
Giacomo Ghini Lapo Luconi Andrea Rossin Claudio Bianchini Giuliano Giambastiani Stefano Cicchi Luisa Lascialfari Alberto Brandi Alessandra Giannasi

An unprecedented functionalization of multi-walled carbon nanotubes (MWCNTs) has been conveniently achieved by the 1,3-dipolar cycloaddition of a cyclic nitrone. This organic functionalization yields materials with a great solubility in DMF (close to 10 mg per mL of DMF) preferentially occurring at the defects of the MWCNT sp(2) network.

Journal: :international journal of nano dimension 0
a. solaymani department of nano chemical engineering, shiraz university, shiraz, iran. m. m. doroodmand department of chemistry, college of sciences, shiraz university, shiraz 71454, iran. s. sabbaghi department of nano chemical engineering, shiraz university, shiraz, iran.

this paper discusses different important gas permeation models such as “maxwell”, “bruggeman”, “lewis-neilson”, and “pal” models to predict “mixed matrix membranes” (mmms) performance. the main parameter considered and discussed is the permeability of hydrogen on carbon nanotubes (cnts)-mmm. for evaluation of the theoretical models, experimental data of permeability for h2 were compared to the ...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2011
Xiangheng Niu Hongli Zhao Minbo Lan

Integrating the advantages of screen printing technology with the encouraging electroanalytical characteristic of metallic bismuth, we developed an ultrasensitive and disposable screen-printed bismuth electrode (SPBE) modified with multi-walled carbon nanotubes (MWCNTs) for electrochemical stripping measurements. Metallic bismuth powders and MWCNTs were homogeneously mixed with graphite-carbon ...

2010
Claudia Backes Andreas Hirsch

Within the past decades extensive research has shed light into the structure, reactivity and properties of carbon nanotubes (CNTs) [1–3]. This new carbon allotrope is theoretically constructed by rolling up a graphene sheet into a cylinder with the hexagonal rings joining seamlessly. Commonly, carbon nanotubes are classified into single-walled carbon nanotubes (SWCNTs) which consist of one cyli...

Journal: :Journal of colloid and interface science 2015
Katerina Voitko Ajna Tóth Evgenij Demianenko Gábor Dobos Barbara Berke Olga Bakalinska Anatolij Grebenyuk Etelka Tombácz Volodymyr Kuts Yurij Tarasenko Mykola Kartel Krisztina László

The catalytic performance of multi-walled carbon nanotubes (MWCNTs) with different surface chemistry was studied in the decomposition reaction of H2O2 at various values of pH and temperature. A comparative analysis of experimental and quantum chemical calculation results is given. It has been shown that both the lowest calculated activation energy (∼18.9 kJ/mol) and the highest rate constant co...

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