Schiff’s base vanillin thiourea [email protected] was synthesis by making a reactions on the PUF and finally making a composite with zinc oxide nanoparticles (ZnONPs) which change the thermal and electric properties of the sorbent. Characterization of [email protected] was discovered a new function groups by Fourier transform infrared (FT-IR) as OH, NH, C=O, N=C=S and C=N. X-ray diffraction (X-ray) illustrates that the material of [email protected] has an amorphous structure with embedded by crystalline phase has diffraction peaks at 31.84?, 34.52?, 36.33?, 47.63?, 56.71?, 62.96?, 68.13?, and 69.18? and the diffraction peak is the same for ZnONPs. TGA, DTA, DSC revealed thermal stability of composite. The Boehm titration method confirmed existence of acid sites which good for adsorption of cationic dyes and azo dyes.