Surface modification of electrical conductive porous alumina with uniformly dispersed Pt nanoparticles

Abstract

Electrical conductive porous alumina (CPA) fabricated by the combination of gel-casting and high temperature reductive sintering in Ar at 1700 oC attracts a surge of interest. CPA was firstly pre-treated with mixed-acids followed by deposition of Pt nanoparticles via reductive reaction in order to gain novel composite. Crystal structure of uniformly dispersed Pt nanoparticles was confirmed to face centered cubic. And it was proved that surface pre-treatment attributes to the selective deposition of matrix.