ZnO-PLLA Nano fiber Nano composite for Continuous Flow Mode Purification of Water from Cr(VI)

Nano materials of ZnO-PLLA nano fibers have been used for the adsorption of Cr(VI) as a prime step for the purification of water. The fabrication and application of the flexible ZnO-PLLA nano fiber nano composite as functional materials in this well-developed architecture have been achieved by growing ZnO nano rod arrays by chemical bath deposition on synthesized electro spun poly-L-lactide nano fibers. The nano composite material has been tested for the removal and regeneration of Cr(IV) in aqueous solution under a "continuous flow mode" by studying the effects of ph, contact time, and desorption steps. The adsorption of Cr(VI) species in solution was greatly dependent upon ph. SEM micrographs confirmed the successful fabrication of the ZnO-PLLA nano fiber nano composite. The adsorption and desorption of Cr(VI) species were more likely due to the electrostatic interaction between ZnO and Cr(VI) ions as a function of ph. The adsorption and desorption experiments utilizing the ZnO-PLLA nano fiber nano composite have appeared to be an effective nano composite in the removal and regeneration of Cr(VI) species