Abstract
Co and N co-modified mesoporous carbon composites (Co/N-mC) have been simply prepared at low cost from the carbonization of ZIF-67 wherein not only providing surface N-modification for promoting the adsorption behavior of acidic dyes, but also constructing a magnetic property for convenient separation. Co/N-mC composite presented the adsorption ability of MO (178 mg g−1) > RhB (141 mg g−1) (T = 25 °C, pH = 7.0, C0 = 20 mg L−1) because of its spacious porous structure (BET: 250.8 m2 g−1; pore size: 3.9 nm) and functional basic character (pyrrolic-N and pyridinic-N). Compared with basic dyes (RhB), mesoporous C doped with N improves the adsorption of acid dyes (MO). In addition, the magnetic properties introduced in the Co/N-mC make it easier to separate after adsorption and regeneration by an external magnetic field.
Highlights
Water is an important resource for all living things on our planet
The magnetic properties introduced in the Co/N-mC make it easier to separate after adsorption and regeneration by an external magnetic field
The morphology of Zeolitic imidazole frameworks (ZIFs)-67 and Co/N-mC samples was firstly clarified through Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM), respectively
Summary
Water is an important resource for all living things on our planet. water quality was affected by human activities, leading to a serious threat to water source. Magnetic porous carbon derived from Co-based ZIF-67 hold great promise for remediation of wastewater because of its excellent stabilities in water, rich in carbon, large surface area, N functionalities and magnetic Co metal sites. In this contribution, Co and N co-modified mesoporous carbon composites (Co/N-mC) have been prepared at low cost from the carbonization of ZIF-67 wherein providing surface N-modification for promoting the adsorption behavior of acidic dyes, and constructing a magnetic property for convenient separation. The magnetic properties introduced in the Co/N-mC make it easier to separate after adsorption and regeneration by an external magnetic field
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