Katerina L. Zaharieva

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In this investigation, we report the preparation and characterization of Co-, Cuand Mn-substituted iron oxide catalytic materials supported on activated carbon. Co-precipitation method and low temperature treatment were used for their synthesis. The influence of chemical composition, stoichiometry, particle size and dispersity on their catalytic activity(More)
Over the past few years, pharmaceutical drugs have been considered as emerging pollutants due to their continuous input and persistence in the aquatic ecosystem even at low concentrations. They have been detected worldwide in environmental matrices, indicating their ineffective removal from water and wastewaters using conventional methods. In this study we(More)
The pKAH-values of some substituted phenylacetic acid derivatives have been determined in the system water /dimethyl sulphoxide / 0. 11 M tetramethylammonium hydroxide. The acidity depends strongly on the polarity of the substituent in the phenyl group, Hammett p-valucs from 4.8 to 5 .8, and in the case of the same s<1bstituent decreasf's in the order nit!(More)
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