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Homogeneous catalysis: Kinetics and mechanism of oxidation of Ru(II) sensitizers by inorganic peroxides

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Abstract

The present research work involves the nature of interaction between the Ru(II) complex and inorganic peroxides in the absence of excitation by light photons. We synthesized a photosensitizer, ([Ru(dcbpy)2(biq)]Cl2·3H2O) and studied its thermal degradation in the presence of inorganic peroxides (hydrogen peroxide, peroxomonosulfate and peroxodisulfate). Progress of the thermal reaction between the Ru(II) complex and each peroxide in 0.5 M H+ solutions was followed spectrophotometrically by monitoring the disappearance of the Ru(II) complex at its maximum absorbance (λ = 514 nm). The reactivities of the peroxides were compared and suitable mechanisms proposed.

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Authors and Affiliations

  1. Department of Energy [Chemistry-Interdisciplinary], University of Madras, Guindy Campus, Chennai, 600 025, India

    Radhakrishnan Chitradevi, Sambandam Anandan & Pichai Maruthamuthu

  2. Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy, 620 015, India

    Sambandam Anandan

Authors
  1. Radhakrishnan Chitradevi
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  2. Sambandam Anandan
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  3. Pichai Maruthamuthu
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Correspondence to Pichai Maruthamuthu.

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Chitradevi, R., Anandan, S. & Maruthamuthu, P. Homogeneous catalysis: Kinetics and mechanism of oxidation of Ru(II) sensitizers by inorganic peroxides. React Kinet Catal Lett 93, 127–133 (2008). https://doi.org/10.1007/s11144-008-5217-6

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  • DOI: https://doi.org/10.1007/s11144-008-5217-6

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