The e.g. OH, NH, C=O, N=C=S and C=N

The aim of this paper synthesis a novel and inexpensive sorbent with good stability in acidic and alkaline solutions. Schiff’s base vanillin thiourea [email protected] oxide nanoparticle composite ([email protected]) was characterized by Fourier transform infrared (FT-IR), Brunauer-Emmett-Teller (BET), X-ray diffraction (X-ray), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA). A Many surface active groups, e.g. OH, NH, C=O, N=C=S and C=N were detected in the matrix of [email protected] The surface area and pore volume of [email protected] were 10.6 m2/g and 0.017 cm3/g. The XRD pattern 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?. [email protected] was successfully used for sensitive detection and efficient removal of toxic dyes from wastewater. The operating variables studied were concentration, pH, time and temperature for removal of brilliant green (Br.G), toluidine blue (To.B) and trypan blue (Tr.B). The removal percentages of Br.G, To.B and Tr.B (95%-100%) were in pH 8-10, 3-11 and 3-11at 3, 3 and 15 min for Br.G, To.B for Tr.B. Langmuir model was best described for equilibrium process and maximum monolayer adsorption capacities were found to be 474, 381 and 337 mg/g for Br.G, To.B and Tr.B. Removal process was spontaneous, ?G° values were -7.3, -8.6 and -2.9 KJ/mol. As this result shown the [email protected] was a suitable adsorbent for dye removal.


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