Carbonization and oxidation of metal–organic frameworks based on 1,4-naphthalene dicarboxylates

Abstract

Three new isostructural metal-organic frameworks (MOFs), [V(OH)(NDC)] (<b>1</b>), [Cr(OH)(NDC)] (<b>2</b>), and [Ga(OH)(NDC)] (<b>3</b>) have been synthesized hydrothermally using 1,4-naphthalene dicarboxylate (NDC) as the linker. These MOFs (<b>1</b>, <b>2</b> and <b>3</b>) have been used as a template for the synthesis of metal-oxide-inserted nanoporous carbon materials. The newly synthesized MOFs and the resulting porous carbon hybrid functional materials have been characterized using powder x-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive x-ray spectroscopic analysis. Results show that compounds <b>2</b> and <b>3</b> form their respective metal oxide nanoparticles on the surface of the carbon materials during carbonization at 800 °C. The gas sorption properties of the new MOFs and their corresponding carbon frameworks have been reported.