Detonation Nanodiamonds as Catalyst Supports

Abstract

The article reports on experimental study of catalytic properties of a new system: Pt on detonation nanodiamond (Pt/DND) for the carbon monoxide oxidation reaction. The catalytic activity of Pt/DND structures as a function of platinum content in the catalyst within the 7–80 wt % intervals was studied and the structure of the Pt/DND catalyst was investigated by X-ray diffraction and HRTEM. The Pt/DND catalysts developed demonstrate a high degree of conversion of CO to CO2 at room temperature, a feature making them attractive for commercial applications as catalytic systems for purification of air from carbon monoxide in houses and industrial areas. The new catalysts were incorporated in solid-state electrochemical CO gas sensors. A statement on efficiency of the detonation nanodiamonds as a support for catalytic metals of platinum groups has been done.