Related Experiment Video
Updated: Jan 26, 2026

Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
Published on: September 22, 2015
Universal Method for Producing Reduced Graphene Oxide/Gold Nanoparticles Composites with Controlled Density of
Piotr Szustakiewicz1, Natalia Kołsut2, Aneta Leniart3,4
1Faculty of Chemistry, University of Warsaw, 1 Pasteura st., 02-093 Warsaw, Poland. p.szustakiewicz@chem.uw.edu.pl.
Abstract:
In this study, we report a universal approach allowing the non-covalent deposition of gold nanoparticles on reduced graphene oxide surface in a controlled fashion. We used a modified Hummers method to obtain graphene oxide, which then underwent surficial functionalization with carboxyl moieties coupled with simultaneous reduction. Nanoparticles were synthesized ex-situ and capped with a thiolated poly-ethylene glycol (PEG) ligand. The interactions between the surface of modified graphene oxide and nanoparticle ligands enabled the formation of stable hybrid graphene-nanoparticles materials in the aqueous phase. Using this technique, we were able to cover the surface of graphene with gold nanoparticles of different shapes (spheres, rods, triangles, stars, and bipyramids), broad range of sizes (from 5 nm to 100 nm) and controlled grafting densities. Moreover, materials obtained with this strategy exhibited long-term stability, which coupled with the versatility and facility of preparation, makes our technique appealing in the light of increasing demand for new graphene-based hybrid nanostructures.
More Related Videos
Related Concept Videos
Redox Titration: Other Oxidizing and Reducing Agents
Methods of reducing fever
Pharmacological Methods of Reducing Fever:
Nuclear Stability
To hold positively charged protons together...
Oxidation-Reduction Reactions
Oxidation Numbers
Birth Control Methods

