Optimization of Magnetic Behaviors of Au-NP-Decorated MWCNTs and Reduced Graphene Oxide for Biomedical Applications.

ABSTRACT: Optimization of electronic/magnetic behaviors of chemically decorated diamagnetic noble-metal gold nanoparticles (Au-NPs ≈5 at. %) on multiwalled carbon nanotubes (MWCNTs) and reduced graphene oxide (r-GO) is studied for future uses of optoelectronic/magnetic and biomedical applications. The changes between Au 4f_5/2 and Au 4f_7/2 ≈ 3.7 eV in X-ray photoelectron spectroscopy and 1.1 (±0.3) eV shifts in the C K-edge in X-ray absorption near edge structure spectroscopy confirm that the reduced form of Au⁰ was present in the Au-NP-decorated nanocomposites. The potential difference (ΔV) is built due to charge creations at the interface of r-GO/MWCNTs and Au-NPs and shifts in the Fermi level (ΔE _F) due to electronic transfer effects, and a

SUBMITTER: Ray SC 

PROVIDER: S-EPMC11425615 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature