Mesoporous Carbon Materials with Ultra‐Thin Pore Walls and Highly Dispersed Nickel Nanoparticles

Abstract

Mesoporous carbon materials with ultra-thin carbon pore walls and highly dispersed Ni nanoparticles have been successfully prepared by using two different SBA-15 silicas as hard templates and 2,3-dihydroxynaphthalene (DHN) as a carbon precursor. The nickel precursor was a concentrated nickel nitrate hexahydrate [Ni(NO 3 ) 2 ·6H 2 O] solution in 2-propanol, which was added to the carbon-silica nanocomposite prior to thermal treatment. The samples studied were analyzed by thermogravimetry (TG), nitrogen adsorption at -196°C, powder X-ray diffraction (XRD), Raman spectroscopy, scanning and transmission electron microscopy (STEM), and in situ electron diffraction X-ray spectroscopy (EDX). While TG analysis revealed carbon contents lower than 30 wt.-%, nitrogen adsorption provided information about the homogeneity of the carbon thin film deposited onto the mesopore walls of the ordered silica templates SBA-15. The templates, carbon-silica nanocomposites, and carbon inverse replicas with nickel nanoparticles exhibit uniform pores, high surface areas, and large pore volumes. Partially

Fabrication and Characterization of Inorganic Silver and Palladium Nanostructures within Hexagonal Cylindrical Channels of Mesoporous Carbon

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