NOVEL MESOPOROUS NITRIDES AND NITROGEN DOPEDCARBON MATERIALS WITH DIFFERENT STRUCTURE,PORE DIAMETERS, AND NITROGEN CONTENTS

摘要

Here we report on the synthesis of novel highly ordered one and three dimensional cagetype mesoporous carbon nitride (MCN-1 and MCN-2) with very high surface area andpore volume using SBA-15 and three dimensional cage type mesoporous silica, SBA-16,respectively, as template through a simple polymerization reaction betweenethylenediamine (EDA) and carbon tetrachloride (CTC). The materials have beenunambiguously characterized by various sophisticated techniques such as XRD, nitrogenadsorption, HRTEM, and FT-IR spectroscopy. The XRD results reveal that MCN-1possesses two dimensional structure with p6mm space group, which is quite consistentwith the data from HRTEM while MCN-2 exhibits three dimensional structure with aIm3m space group. We also demonstrate here the pore diameter of the MCN-1 materialscan be controlled by tuning the pore diameter of the silica template while the texturalparameters and the nitrogen content of the materials can also be controlled by varying theweight ratio of the EDA to CTC in the synthesis gel.