Facile Synthesis of Hierarchically Porous Metal-TiO₂/graphitic Carbon Microspheres by Colloidal Crystal Templating Method

摘要

Hierarchically porous metal-TiO2/graphitic carbon microspheres (M-TiO2/GCM) (where M= W, Sn,Ni, Co, or Ce) were synthesized for the first time by a simple colloidal crystal templating method. X- ray diffraction, energy dispersive spectroscopy, nitrogen adsorptionesorption, scanning electronmicroscopy, and transmission electron microscope analysis techniques were used to characterize thesamples. It was observed that the amount of acetone solvent had great influence on the morphology ofcomposites, and the obtained M-TiO2/GCM composite microspheres possessed hierarchical porositywith large specific surface area, high metallic compound content, and graphitic carbon frameworks,giving the materials wide potential applications as catalysts, adsorbents and electrode materials.