Probing the formation process of aluminium hydroxide nanoparticles prepared by laser ablation with 27Al NMR spectroscopy

Abstract

The ²⁷Al MAS NMR spectra of amorphous alumina exhibit three resonances resulting from aluminium in four-, five-, and six-coordination, whereas samples containing crystalline particles of bayerite, gibbsite, and boehmite show only a single resonance associated with six-coordinate aluminium.