Figure 1
From: Silicon nitride: a potent solid-state bioceramic inactivator of ssRNA viruses
Characterizations of the as-received Si3N4 powder: (a) scanning electron micrograph reveals size and morphology of the powder. In (b)–(d), XPS narrow scans at the Si2p, N1s, and O1s edges with related deconvolution in sub-bands representing different bond populations at the surface of the material (cf. labels).
