X-ray photoelectron spectroscopy of metal oxide nanoparticles: chemical composition, oxidation state and functional group content.

ABSTRACT: Surface chemistry drives the interaction of a material with its surroundings, therefore it can be used to understand and influence the fate of nanomaterials when used as functional materials or when released to the environment. Here we have used X-ray photoelectron spectroscopy (XPS) to probe the chemical composition, oxidation state and functional group content of the near surface region of four families of commercially available metal oxide nanoparticles from several different suppliers. The analyzed nanoparticles varied in size and surface functionalization (unfunctionalized vs. amine, stearic acid, and PVP-coated samples). Survey and high-resolution scans have provided information on the atomic composition of the samples, including an estimate of the stoichiometry of the metal o

SUBMITTER: Lopinski GP 

PROVIDER: S-EPMC11780326 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature