Magnetic porous carbon composites for rapid and highly efficient degradation of organic pollutants in water

Abstract

A magnetic porous carbon composite (MPC) was prepared from metal−organic frameworks (MOFs) by the one-step calcination method. The MPC was characterized by SEM, TEM, TG, DTG, Raman and XPS. The adsorption and degradation performance of MPC towards four organic dyes were investigated. The maximum adsorption amount of magenta on MPC was 191.94 mg g -1 at 25 °C. Furthermore, the MPC showed remarkable stability for it can be recycled 5 times through the facile magnetic separation without obvious loss of activity. The degradation efficiency of MPC toward four kinds of organic pollutants was nearly 100% within 36 ​min, which was much higher than that previously reported. • Magnetic Porous Carbon Composites is prepared by one step carbonization with excellent adsorption and catalytic degradation performance. • Maximum adsorption capacity of magenta on MPCs is 191.94 ​mg ​g −1 and nearly 100% degradation efficiency within 36 ​min. • Ultra-fine nanocrystalline Fe 3 O 4 nanoparticles embedded in the octahedral structure, are favor of removal and degradation of organic dye pollutants. • Carbon layer in MPCs is beneficial to avoid secondary pollution in degradation and contribute the stability and recyclability of MPCs. • MPCs possesses potential green and effective application of organic pollutants treatment in complex matrix.