Facile access to mesoporous Al2O3 nanofibers with ribbon-like structure for adsorptive removal of Congo red dye from water

Using a simple process to preparation mesoporous alumina nanofibers.During the preparation process, PVB is both a pore forming agent and a spinning aid.Fiber porosity increased and then decreased at elevated temperaturesThe fibers calcined at 800 °C show the strongest adsorption capacity for CR.After cyclic adsorption, the fibers still have good adsorption capacity.