Effect of Nanobubbles on the Flotation Performance of
In this study, the effects of air bubbles and nanobubbles on flotation performance andics of oxidized coal were investigated. The surface properties of the coal sample before and after oxidation were characterized by a scanning electron microscope SEM and X ray photoelectron spectroscopy XPS. The nanobubbles on highly oriented pyrolytic graphite HOPG were observed by an atomic





































