Pt Nanoparticles on Nanoporous Carbon Prepared from Surfactant -Resorcinol Resin Composites

Abstract

Platinum nanoparticles supported on nanoporous carbons have been prepared by carbonization of metal-surfactant-thermosetting polymer composites. A strategy of this method is to utilize organic-inorganic and organic-organic electrostatic interactions. A precursor solution was prepared from H₂PtCl₆·6H₂O (M), surfactant (S), resorcinol (R), formaldehyde (F), Na₂CO₃, ethanol (EtOH) and deionized water. The carbonized products have high BET surface area of 490 m²g^-1. The RF polymer must be negatively charged and interact with positively charged cationic surfactant to form RF/surfactant composites. Pt particles with a diameter of 2 nm were obtained after carbonization at 1073 K. Surfactant molecules must interact not only with RF resin but also with ionic Pt species and inhibit an aggregation of Pt particles.