NANOSTRUCTURED AU-C COMPOSITES WITH CONTROLLABLE DISPERSITY OF FILLER

Abstract

Nanostructured metal-carbon composites (NMCC) have been prepared by reduction of HAuCl4 in pores and upon external surface of carbon matrix. The influence of different factors on dispersity of metallic phase has been investigated. NMCC phase composition and average crystallite size were determined by X-Ray Diffraction Method. Functionsof particles sizes distribution were calculated on Small-Angle X-Ray Scattering curves. Porous structure parameters were estimated on the basis of adsorption-desorption isotherm of nitrogen at 77 K. Optimal conditions of NMCC production preventing significant decreasing of specific surface and pores volume of carbon matrix during their filling with gold nanoparticles were established.

Keywords

• nanostructured materials
• composites
• metal
• gold
• mesoporous carbon
• dispersity