Synthesis of large pore sized mesoporous carbon using alumina-templated strategy for high-performance RhB removal

The mesoporous carbon dye adsorption materials were synthesized through a simple alumina-templated strategy. The morphology and structure were characterized by Xray diffraction, transmission electron microscopy, nitrogen adsorption-desorption and adsorption capacities of rhodamine B (RhB) were also tested. The results showed that the mesoporous carbon materials exhibit large BET surface area (1093.1 m(2).g(-1)), large pore volume (3.03 cm(3).g(-1)) and large pore size (21.9 nm) due to the consistence pore structure of carbon material and the template nanosheet gamma -alumina. Therefore, the mesoporous carbon had high equilibrium adsorption amounts (374.3 mg.g(-1)) and fast adsorption rate of RhB (317.8 mg.g(-1) at 5 min). We also explore the kinetic studies of carbon materials for RhB adsorption, indicating that the kinetics module fit the pseudo-second-order kinetic model and Langmuir model for isothermal adsorption theory. This study promotes a high efficient material for RhB dye adsorption and a promising candidate for toxic dye wastewater treatments.

Automated summary

Mesoporous carbon materials synthesized through alumina-templated strategy exhibit large BET surface area, pore volume, and pore size, leading to high adsorption capacity for RhB. The kinetics module fits pseudo-second-order kinetic model and Langmuir model, showing potential for toxic dye wastewater treatments.