fabrication of zif-8 based on lignin with high yield for dye removal from water

The hybrid nanocomposites zif@l composed of zn-based mofs (zif-8) and lignin were successfully synthesized via a simple one-step method at room temperature. the yield of the hybrid nanocomposites zif@l were up to 52% and the synthesis time was greatly shortened. characterization using ft-ir, xrd, sem and n2-sorption analysis indicated that zif@l composites exhibited rhombic dodecahedral structure such as the parent zif-8 synthesized in the absence of lignin and the incorporation of lignin did not destroy the framework integrity of zif-8. the zif@l composites were used to remove methyl violet (mv). the zif@l nanocomposites had a remarkable improvement in adsorption capacity of mv compared with the parent zif-8. the modified langmuir model fitted better the equilibrium data of mv adsorption on the zif@l-4 composite and the maximum adsorption capacity of mv is 1001.2 mg g−1. the pseudo-second-order model could describe well the kinetics process of mv dye onto the prepared adsorbents.