Graphene nanoflakes functionalized with cobalt/cobalt oxides formation during cobalt organic framework carbonization.

In this paper, the effect of nanocatalytic metal-organic framework based on copper metal and bis-tetrazolamine (CuBTA) ligand functionalized with cobalt (II) oxide nanoparticles on the thermal decomposition behavior of ammonium perchlorate (AP), using differential survey calorimetry (DSC) has been reviewed. First, the metal-organic framework (CuBTA) was synthesized from the raw materials of cop...

Selective Area Band Engineering of Graphene using Cobalt-Mediated Oxidation

This study reports a scalable and economical method to open a band gap in single layer graphene by deposition of cobalt metal on its surface using physical vapor deposition in high vacuum. At low cobalt thickness, clusters form at impurity sites on the graphene without etching or damaging the graphene. When exposed to oxygen at room temperature, oxygen functional groups form in proportion to th...

Efficient removal of cobalt(II) ion from aqueous solution using amide-functionalized metal-organic framework

In this study, an amide-functionalized metal-organic framework, namely TMU-24 was selected to adsorb Co(II) from wastewater with an adsorption capacity of 500 mg. g-1 in less than 20 minutes in neutral pH (pH=7). The effect of diverse parameters such as adsorbent dosage, competitive ions, and contact time on the adsorption process was investigated to find the optimal amounts of them. Also, the ...

Metal (Ni, Co)-Metal Oxides/Graphene Nanocomposites as Multifunctional Electrocatalysts

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 5799 wileyonlinelibrary.com issues associated with energy security and environmental pollution. [ 1–5 ] Oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) are the most crucial electrochemical reactions to realize energy storage and conversion in these technologies. Although Pt-, Ir-, and Ru-ba...

Biomimetic morphological design for manganese oxide and cobalt hydroxide nanoflakes with a mosaic interior{{

We synthesized manganese oxide and cobalt hydroxide nanoflakes with mosaic interiors in aqueous solutions containing poly(acrylic acid) and poly(ethyleneimine), respectively. Nanocrystals 2–3 nm in size made up the mosaic interiors and oriented architectures in the flakes less than 100 nm in width and 10 nm in thickness. The organic polymers coordinated to the metal ionic species and interacted...