The role of charcoal like components (also referred to as char) in soil organic matter reactivity has become increasingly evident. Recently we have demonstrated the role of such material in bauxite. Sodium hydroxide is ...

Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), wavelength dispersive spectroscopy (WDS) and the combination of these techniques through x-ray mapping (XRM) have become excellent tool for characterising ...

Tetraethylenepentamine, a long-chained multifunctional amine, was used to attach nitrogen (N) groups to the surface of a polyethylene terephthalate film. The N content of the modified films was determined by X-ray ...

Museum specimens of pyrite are known to undergo oxidation even during storage. Characterisation of the oxidation products is however not always simple due to amorphous character and varying degrees of hydration of the ...

This study investigated the effect of the molecular weight cut-off (MWCO) of a dialysis membrane for the isolation of colloidal organic matter (COM) from surface water. Various dialysis membranes with different MWCO were ...

The superatom model for nanoparticle structure is shown to be inadequate for the prediction of the thermodynamic stability of gold nanoparticles. The observed large HOMO-LUMO gaps for stable nanoparticles predicted by this ...

Graphene-carbon nanotube hybrid materials were successfully prepared through the p-p interaction without using any chemical reagent. We found that the ratio between carbon nanotube and graphene had critical influences on ...

Single crystalline copper oxide nanoribbons were synthesized via a surfactant-assisted hydrothermal route. The resulting CuO nanoribbons contain substantial amounts of nanorings and nanoloops. High resolution TEM analysis ...