Metal ferrite supported bio-nanocomposite from hemp biomass and properties

It has become increasingly popular in recent years to create improved functionalized nanomaterials in an effort to enhance their physicochemical, catalytic, and biological capabilities. In this study, eco-friendly, especially water dispersible metal ferrite (MFe 2 O 4 (M: Cu, Ni, Cd, Mn, and Co)) supported bio-nanocomposites from hemp biomass were synthesized low-cost method by co-precipitation procedure. They were characterized by ATR-FTIR, XRD, SEM, TEM (STEM), EDX, VSM, Uv-Vis, and TG/DTG analyses. The variation of their ionic conductivity with temperature and concentration and also their catalytic effects against cationic dyes such as methylene blue (MB), crystal violet (CrV), and malachite green oxalate (MGO) were investigated. XRD patterns and FTIR spectra of the AHB-MFe 2 O 4 , especially the stretching of Fe-O and M-O, showed the formation of metal ferrite bio-nanocomposites. Also, interaction between the biomass and metal ferrite nanoparticles was obviously seen from XRD patterns and FTIR spectra of the AHB-MFe 2 O 4 . It was determined that AHB-MFe 2 O 4 bio-nanocomposites have high thermal stability, high thermal stability, high ionic conductivity as 12–14 mS/cm (almost higher than that of the 0.1 M KCl) and negative surface charge. Moreover, they exhibited high catalytic performance against cationic dyes such as MB, CrV, and MGO in sun light by over 90%. Graphical Abstract