Abstract
This study was carried out to investigate the effect of electron beam irradiation on the spectral and catalytic properties of chitosan supported (ONClCl) tetra coordinated Co(II) complex, [Co(OIAC)Cl2]. The complex was subjected to electron beam irradiation of 100Gy, 1kGy and 10kGy doses. Chain scission of chitosan was observed on irradiation at 100Gy and 10kGy and chain linking at 1kGy as evidenced by viscosity and FT-IR spectroscopic studies. This observation was also confirmed by thermo gravimetric and differential thermogravimetric (TG–DTG) analysis. It revealed that the thermal stability of the complex was increased at 1kGy irradiation and decreased at 100Gy and 10kGy. In addition, the effect of electron beam irradiation on the surface morphology of the complex was studied by scanning electron microscopy. Catalytic abilities of both non-irradiated complex and irradiated complexes were determined and compared in the cyclohexane oxidation using hydrogen peroxide oxidant. The catalytic activity was found to increase after irradiation at all doses. Though the complex irradiated at 10kGy showed highest conversion efficiency, irradiation at 1kGy is suggested as the best dose due to the extensive reusability and adequate catalytic ability of the complex.
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