Transformation from a non-radical to a radical pathway via the amorphization of a Ni(OH)2 catalyst as a peroxymonosulfate activator for the ultrafast degradation of organic pollutants

Amorphous Ni(OH)₂ obtained using a formamide-assisted precipitation method was shown to possess an electron-rich surface. The “switch” between radical and non-radical pathway was controlled by the electron-donating capabilities of the catalyst.