Macroporous Au materials prepared from colloidal crystals as templates

摘要

In this paper, we reported the preparation of macroporous An materials using organic colloidal crystals as templates and their catalytic activity for electroless copper deposition. The poly(styrene-methyl methacrylate-acrylic acid) (P(St-MMA-AA)) copolymer colloids were deposited in an orderly manner onto the silicon surface, together with the infiltration of the An nanoparticles into the interspaces of the colloids. The formed hybrid colloidal crystal subsequently was sintered at similar to550 degreesC to remove the organic components fully to obtain a macroporous Au framework with three-dimensional ordered porous structure. The pore diameter was around 310 nm and almost monodisperse. It was demonstrated that the macroporous An materials exhibit catalytic activity and can induce electroless copper deposition. (C) 2004 Elsevier Inc. All rights reserved.