Light induced electron transfer reactions : kinetics and mechanism of oxidation of hexacyanoferrate(II) by peroxodisulphate induced by irradiation of visible light in presence of tris(2,2' -bipyridine)ruthenium(II) ion photocatalyst in aqueous solutions

(Ms.) Savita Bansal, (Ms.) Seema Sharma, (Mrs.) C. L. Khandelwal, P. D. Sharma
2004 Zenodo  
Department of Chemistry, University of Rajasthan, Jaipur-302 004, India Manuscript received 7 September 2004 The oxidation reaction of hexacyanoferrate(II) by peroxodisulphate (S2O2-8) is accelerated by irradiation with visible light in aqueous acid solutions containing tris(2,2'-bipyridine)ruthenium(II) ion (Ru(bipy)2+3), the latter acts as a photocatalyst. The mechanism of the reaction consists of a chain reaction initiated by the quenching reaction of the photo excited ruthenium(II) complex
more » ... on (ꚚRu(bipy)2+3), with S2O2-8. The rate law is expressed by the equation 1 d[S2O2-8] = kqlaᶲ[S2O2-8] kq is the bimolecular quenching rate constant and has been determined kinetically. Other terms have their usual meaning.
doi:10.5281/zenodo.5833421 fatcat:ex7efuk7mzeyxim7cjiwpaae3i