Substrate versus oxidant activation in RuIII(edta) catalyzed dye degradation
IR@CMERI: CSIR- Central Mechanical Engineering Research Institute (CMERI), Durgapur
View Archive Info| Field | Value | |
| Title |
Substrate versus oxidant activation in RuIII(edta) catalyzed dye degradation
|
|
| Creator |
Chatterjee, Debabrata
Rothbart, Sabine Eldik, Rudi van |
|
| Subject |
Chemistry
|
|
| Description |
The [RuIII(edta)(H2O)]− (edta4− = ethylenediaminetetraacetate) catalyzed oxidative degradation of methylene blue (MB) in the presence of H2O2 has been achieved. Complete degradation of 0.05 mM MB was noticed within 300 s in the presence of 5.0 μM of Ru(edta) catalyst under ambient conditions. Catalytic degradation of the dye was investigated by using rapid-scan spectrophotometry as a function of [Ru(edta)], [H2O2], [MB] and pH at 25 °C. Spectral analyses and kinetic data point towards a catalytic pathway that involves the rapid coordination of MB to the RuIII(edta) complex to yield [RuIII(edta)(MB)]− species that react directly with hydrogen peroxide. The catalytic-active intermediate [RuIII(edta)(OOH)]2− was also found to be operative at high H2O2 concentration over the Ru(edta) catalyst in effecting MB degradation under the specified conditions.
|
|
| Publisher |
Royal Society of Chemistry
|
|
| Date |
2013
|
|
| Type |
Article
PeerReviewed |
|
| Identifier |
Chatterjee, Debabrata and Rothbart, Sabine and Eldik, Rudi van (2013) Substrate versus oxidant activation in RuIII(edta) catalyzed dye degradation. RSC Advances, 3 (11). pp. 3606-3610.
|
|
| Relation |
http://cmeri.csircentral.net/306/
|
|