Catalytic, Photocatalytic and Electrochemical Properties of Surface-Treated Nanodiamond and of Multifunctional Gold Decorated Nanodiamond Systems

The unique surface properties of detonation nanodiamonds, such as their stability, high surface area, and the ability to be easily functionalized, make them a versatile and promising material for various catalytic applications. The large surface area and diverse surface functional groups on detonation nanodiamonds can promote heterogeneous catalysis and they can be used in a variety of reactions, including hydrogenation, reduction, oxidation, and other industrial processes. Here are some ways, developed in our laboratory, to modulate catalytic activities of ND by surface functionalization or by decorating ND with gold nanoparticles (AuNP). Gold nanoparticles and nanodiamonds are indeed remarkable nanomaterials with unique properties and a wide range of potential applications. The teamwork between AuNP and ND is related to the ability to control the shape and size of gold nanoparticles on the surface of nanodiamonds, modulate the colloidal properties, and the interactions with their surroundings. The hybrid system can exhibit unique catalytic and sensor activities, as both components contribute to these properties. In this communication, we will explore the use of AuNP-ND system as a platform for immobilizing enzymes and antibodies on electrode surfaces and test them in electroanalytical applications. Finally modified ND will be investigated as a catalyst in the reductive degradation of pollutants (nitrophenols class) and as enzyme mimics in the transesterification reaction. In summary, the combination of gold nanoparticles and nanodiamonds offers a powerful platform for a wide range of applications in various fields. Their unique properties, surface chemistry, and biocompatibility make them highly versatile, and the synergy between these two components can lead to innovative solutions in the areas of imaging, drug delivery, biosensing, and beyond. Research continues to explore and develop these hybrid systems to unlock their full potential for practical applications.