Optimization of electrochemical decolorization of certain arylazo pyridone dyes
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Electrocatalytic decolorization of arylazo pyridone dyes was investigated in the presence of sodium chloride using a DSA Ti/PtOx electrode in dilute sodium hydroxide. The decolorization could be attributed to the indirect oxidation of the investigated dyes by electrogenerated hypochlorite formed from the chloride oxidation. The electrochemical decolorization was investigated for the different sodium hydroxide concentrations in the range from 40 mg dm(-3) to 4 g dm(-3), sodium chloride concentrations in the range from 15 to 40 g dm(-3), currents in the range of 100 to 250 mA and dye concentrations from 5 to 20 mg dm(-3). The optimum electrolysis conditions are suggested. The effect of substituents on the reaction rate was also studied.
Keywords:
pyridone / electrolysis / hypochlorite / UV-Vis spectroscopy / donor-acceptor effectsSource:
Journal of the Serbian Chemical Society, 2014, 79, 12, 1523-S179Publisher:
- Srpsko hemijsko društvo, Beograd
Funding / projects:
- Study of the Synthesis, Structure and Activity of Natural and Synthetic Organic Compounds (RS-172013)
- Electrochemical synthesis and characterization of nanostructured functional materials for application in new technologies (RS-172046)
DOI: 10.2298/JSC140409063M
ISSN: 0352-5139
WoS: 000348749400007
Scopus: 2-s2.0-84920814632
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Lađarević, Jelena AU - Prlainović, Nevena AU - Ušćumlić, Gordana AU - Grgur, Branimir AU - Mijin, Dušan PY - 2014 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2724 AB - Electrocatalytic decolorization of arylazo pyridone dyes was investigated in the presence of sodium chloride using a DSA Ti/PtOx electrode in dilute sodium hydroxide. The decolorization could be attributed to the indirect oxidation of the investigated dyes by electrogenerated hypochlorite formed from the chloride oxidation. The electrochemical decolorization was investigated for the different sodium hydroxide concentrations in the range from 40 mg dm(-3) to 4 g dm(-3), sodium chloride concentrations in the range from 15 to 40 g dm(-3), currents in the range of 100 to 250 mA and dye concentrations from 5 to 20 mg dm(-3). The optimum electrolysis conditions are suggested. The effect of substituents on the reaction rate was also studied. PB - Srpsko hemijsko društvo, Beograd T2 - Journal of the Serbian Chemical Society T1 - Optimization of electrochemical decolorization of certain arylazo pyridone dyes EP - S179 IS - 12 SP - 1523 VL - 79 DO - 10.2298/JSC140409063M ER -
@article{ author = "Lađarević, Jelena and Prlainović, Nevena and Ušćumlić, Gordana and Grgur, Branimir and Mijin, Dušan", year = "2014", abstract = "Electrocatalytic decolorization of arylazo pyridone dyes was investigated in the presence of sodium chloride using a DSA Ti/PtOx electrode in dilute sodium hydroxide. The decolorization could be attributed to the indirect oxidation of the investigated dyes by electrogenerated hypochlorite formed from the chloride oxidation. The electrochemical decolorization was investigated for the different sodium hydroxide concentrations in the range from 40 mg dm(-3) to 4 g dm(-3), sodium chloride concentrations in the range from 15 to 40 g dm(-3), currents in the range of 100 to 250 mA and dye concentrations from 5 to 20 mg dm(-3). The optimum electrolysis conditions are suggested. The effect of substituents on the reaction rate was also studied.", publisher = "Srpsko hemijsko društvo, Beograd", journal = "Journal of the Serbian Chemical Society", title = "Optimization of electrochemical decolorization of certain arylazo pyridone dyes", pages = "S179-1523", number = "12", volume = "79", doi = "10.2298/JSC140409063M" }
Lađarević, J., Prlainović, N., Ušćumlić, G., Grgur, B.,& Mijin, D.. (2014). Optimization of electrochemical decolorization of certain arylazo pyridone dyes. in Journal of the Serbian Chemical Society Srpsko hemijsko društvo, Beograd., 79(12), 1523-S179. https://doi.org/10.2298/JSC140409063M
Lađarević J, Prlainović N, Ušćumlić G, Grgur B, Mijin D. Optimization of electrochemical decolorization of certain arylazo pyridone dyes. in Journal of the Serbian Chemical Society. 2014;79(12):1523-S179. doi:10.2298/JSC140409063M .
Lađarević, Jelena, Prlainović, Nevena, Ušćumlić, Gordana, Grgur, Branimir, Mijin, Dušan, "Optimization of electrochemical decolorization of certain arylazo pyridone dyes" in Journal of the Serbian Chemical Society, 79, no. 12 (2014):1523-S179, https://doi.org/10.2298/JSC140409063M . .