Preparation and weak acid dark blue adsorption studies of melamine formaldehyde-based nanoporous carbon

摘要

A nitrogen-enriched wormhole-like nanoporous carbon has been prepared from melamine formaldehyde resin by a simple one-step nanocasting method. Results indicate that the obtained three-dimensional carbon nanonetwork is worm-hole like. The pore size distribution is narrow with a mean value of 4.7 nm, which is calculated from the desorption branch by Barrett-Joyner-Halenda method. The Brunauer-Emmett-Teller surface area and the nitrogen content of the sample are high up to 521 m~2/g and 21%, respectively. The as-obtained carbon nanomaterial is very highly mesoporous, in which the mesopore content is up to 70%. Adsorption experiments show that the obtained material has better adsorption performance than commercial activated carbon. The adsorption efficiency was up to 94.7% at the concentration of 0.05 mg/mL, while activated carbon is only 25.4% in the research.