γ-irradiation effect on the spectroscopic and electrical properties of K2SO4—Na2SO4mixed system

Hefni, M. A.; Osman, M.A.; Mahfouz, R. M.; Ahmad, M. S.

doi:10.1080/10420150108213267

Cited by 3 publications

(3 citation statements)

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“…Earlier studies on IR spectra of gamma-irradiated mixed sulphate systems have shown that the intensity of sulphate peaks decreased upon irradiation. The observed decrease in the IR intensity was attributed to the rupture of S-O bonds in SO 2−− 4 due to irradiation (11,12). Factors affecting the intensity of IR peak are dipole moment, concentration of molecules in the sample, transition probability, and so on.…”

Section: Resultsmentioning

confidence: 77%

“…(3,(8)(9)(10). infrared (IR) spectral studies indicated a decrease in the intensity of bands upon irradiation (3,(10)(11)(12). It has been reported that gamma irradiation produced marked changes in the ultraviolet (UV)-visible spectra of various glasses, polymers, antibiotics, and so on.…”

Section: Introductionmentioning

confidence: 97%

“…Literature survey revealed that unlike in other oxy anions, radiation damage in sulphate was studied mostly by electron spin resonance techniques (11,12,(17)(18)(19) except in a few cases. Radiation-induced decomposition of some transition metal sulphates and alkali metal sulphates was investigated by Johnson with a view to assessing the relative stability of sulphate ion on various lattices (20).…”

Section: Introductionmentioning

confidence: 99%

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Effect of gamma-irradiation on thermal decomposition kinetics, X-ray diffraction pattern and spectral properties of tris(1,2-diaminoethane)nickel(II)sulphate

Jayashri

Krishnan

Rani

2014

Radiation Effects and Defects in Solids

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Tris(1,2-diaminoethane)nickel(II)sulphate was prepared, and characterised by various chemical and spectral techniques. The sample was irradiated with 60 Co gamma rays for varying doses. Sulphite ion and ammonia were detected and estimated in the irradiated samples. Non-isothermal decomposition kinetics, X-ray diffraction pattern, Fourier transform infrared spectroscopy, electronic, fast atom bombardment mass spectra, and surface morphology of the complex were studied before and after irradiation. Kinetic parameters were evaluated by integral, differential, and approximation methods. Irradiation enhanced thermal decomposition, lowering thermal and kinetic parameters. The mechanism of decomposition is controlled by R 3 function. From X-ray diffraction studies, change in lattice parameters and subsequent changes in unit cell volume and average crystallite size were observed. Both unirradiated and irradiated samples of the complex belong to trigonal crystal system. Decrease in the intensity of the peaks was observed in the infrared spectra of irradiated samples. Electronic spectral studies revealed that the M-L interaction is unaffected by irradiation. Mass spectral studies showed that the fragmentation patterns of the unirradiated and irradiated samples are similar. The additional fragment with m/z 256 found in the irradiated sample is attributed to S 8 + . Surface morphology of the complex changed upon irradiation.

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Section: Resultsmentioning

confidence: 77%