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Changes in spectrochemical and catalytic properties of biopolymer anchored Cu(II) and Ni(II) catalysts by electron beam irradiation

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Title Changes in spectrochemical and catalytic properties of biopolymer anchored Cu(II) and Ni(II) catalysts by electron beam irradiation
 
Creator ANTONY, R
MINI, PSSP
MANICKAM, STD
SANJEEV, G
MITU, L
BALAKUMAR, S
 
Subject TRANSITION-METAL-COMPLEXES
BASE MODIFIED CHITOSAN
SCHIFF-BASE
CYCLOHEXANE OXIDATION
FUNCTIONALIZED CHITOSAN
COORDINATION CHEMISTRY
SUPPORTED CATALYST
HYDROGEN-PEROXIDE
DEGRADATION
CO(II)
Chitosan
Schiff base
Electron beam
Scanning electron microscopy
Cyclohexane
 
Description Chitosan (a biopolymer) anchored Cu(II) and Ni(II) Schiff base complexes, [M(OIAC)Cl-2] (M: Cu/Ni and OIAC: ([2-oxo-1H-indo1-3-ylidene]amino)chitosan) were electron beam irradiated by different doses (100 Gy, 1 kGy and 10 kGy). The electron beam has shown potential impact on biopolymer's support, in detail chain linking and chain scissoring, as evidenced by viscosity studies, FT-IR and X-ray diffraction spectroscopic techniques. Due to these structural changes, thermal properties of the complexes were found to be changed. The surface of these heterogeneous complexes was also effectually altered by electron beam. As a consequence, pores and holes were created as probed by SEM technique. The catalytic activity of both non-irradiated and irradiated complexes was investigated in the aerobic oxidation of cyclohexane using hydrogen peroxide oxidant. The catalytic ability of the complexes was enhanced significantly after irradiation as the result of surface changes. The reusability of the complexes was also greatly affected because of the structural variations in polymeric support. In terms of both better catalytic activity along with the reusability, 1 kGy is suggested as the best dose to attain adequate increase in catalytic activity and good reusability. (C) 2015 Elsevier B.V. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2016-01-15T05:06:26Z
2016-01-15T05:06:26Z
2015
 
Type Article
 
Identifier SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 149,550-557
1386-1425
http://dx.doi.org/10.1016/j.saa.2015.04.006
http://dspace.library.iitb.ac.in/jspui/handle/100/17832
 
Language en