Electrochemical oxidation of a complex mixture of phenolic compounds in the base media using PbO2-GNRs anodes
Само за регистроване кориснике
2020
Аутори
Savić, Branislava![](/themes/MirageVinar/images/orcid.png)
Stanković, Dalibor M.
![](/themes/MirageVinar/images/orcid.png)
Živković, Sanja
![](/themes/MirageVinar/images/orcid.png)
Ognjanović, Miloš
![](/themes/MirageVinar/images/orcid.png)
Tasić, Gvozden S.
Mihajlović, Ivana
Brdarić, Tanja
![](/themes/MirageVinar/images/orcid.png)
Чланак у часопису (Објављена верзија)
![](/themes/MirageVinar//images/creativecommons/arr.png)
Метаподаци
Приказ свих података о документуАпстракт
A novel anode based on PbO2-GNRs nanocomposites was synthesized in order to investigate the simultaneous electrochemical oxidation of phenolic compounds in a mixture of methyl and chloro substituted phenols in alkaline solution (pH = 8.3). The crystal structure, morphology and composition of the synthesized materials were characterized using X-ray powder diffraction (XRPD), field emission scanning electron microscopy with energy dispersive X-ray spectrometer (FESEM-EDX) and transmission electron microscopy (TEM). FESEM images confirmed the presence of PbO2 nanoparticles on the PbO2-GNRs composite. The cyclic voltammetry measurements of the PbO2-GNRs electrode in 0.1 M Na2SO4 electrolyte indicated the electrochemical oxidation of phenol via indirect mechanism by hydroxyl radicals. Electrolytic oxidation of phenolic compounds was performed under potentiostatic conditions at potentials 2.3 V and 3 V. Removal efficiency of phenolic compounds increased with increasing the time of electrolys...is and applied potential, up to 78% for 300 min and potential of 3 V. GC–MS chromatograms confirmed that mechanism of phenolic compounds degradation is based on their dechlorination and demethylation followed by the process of aromatic ring degradation. Newly synthesized PbO2-GNRs as electrode material could be successfully implemented in wastewater treatment of phenolic compounds by the electrochemical oxidation process.
Кључне речи:
Base medium / Electrochemical oxidation / PbO-GNRs / Phenolic compounds / Wastewater treatmentИзвор:
Applied Surface Science, 2020, 529, 147120-Финансирање / пројекти:
- EUREKA [E! 13303 MED-BIO-TEST]
DOI: 10.1016/j.apsusc.2020.147120
ISSN: 0169-4332
WoS: 000564391700008
Scopus: 2-s2.0-85087334810
Колекције
Институција/група
VinčaTY - JOUR AU - Savić, Branislava AU - Stanković, Dalibor M. AU - Živković, Sanja AU - Ognjanović, Miloš AU - Tasić, Gvozden S. AU - Mihajlović, Ivana AU - Brdarić, Tanja PY - 2020 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9064 AB - A novel anode based on PbO2-GNRs nanocomposites was synthesized in order to investigate the simultaneous electrochemical oxidation of phenolic compounds in a mixture of methyl and chloro substituted phenols in alkaline solution (pH = 8.3). The crystal structure, morphology and composition of the synthesized materials were characterized using X-ray powder diffraction (XRPD), field emission scanning electron microscopy with energy dispersive X-ray spectrometer (FESEM-EDX) and transmission electron microscopy (TEM). FESEM images confirmed the presence of PbO2 nanoparticles on the PbO2-GNRs composite. The cyclic voltammetry measurements of the PbO2-GNRs electrode in 0.1 M Na2SO4 electrolyte indicated the electrochemical oxidation of phenol via indirect mechanism by hydroxyl radicals. Electrolytic oxidation of phenolic compounds was performed under potentiostatic conditions at potentials 2.3 V and 3 V. Removal efficiency of phenolic compounds increased with increasing the time of electrolysis and applied potential, up to 78% for 300 min and potential of 3 V. GC–MS chromatograms confirmed that mechanism of phenolic compounds degradation is based on their dechlorination and demethylation followed by the process of aromatic ring degradation. Newly synthesized PbO2-GNRs as electrode material could be successfully implemented in wastewater treatment of phenolic compounds by the electrochemical oxidation process. T2 - Applied Surface Science T1 - Electrochemical oxidation of a complex mixture of phenolic compounds in the base media using PbO2-GNRs anodes VL - 529 SP - 147120 DO - 10.1016/j.apsusc.2020.147120 ER -
@article{ author = "Savić, Branislava and Stanković, Dalibor M. and Živković, Sanja and Ognjanović, Miloš and Tasić, Gvozden S. and Mihajlović, Ivana and Brdarić, Tanja", year = "2020", abstract = "A novel anode based on PbO2-GNRs nanocomposites was synthesized in order to investigate the simultaneous electrochemical oxidation of phenolic compounds in a mixture of methyl and chloro substituted phenols in alkaline solution (pH = 8.3). The crystal structure, morphology and composition of the synthesized materials were characterized using X-ray powder diffraction (XRPD), field emission scanning electron microscopy with energy dispersive X-ray spectrometer (FESEM-EDX) and transmission electron microscopy (TEM). FESEM images confirmed the presence of PbO2 nanoparticles on the PbO2-GNRs composite. The cyclic voltammetry measurements of the PbO2-GNRs electrode in 0.1 M Na2SO4 electrolyte indicated the electrochemical oxidation of phenol via indirect mechanism by hydroxyl radicals. Electrolytic oxidation of phenolic compounds was performed under potentiostatic conditions at potentials 2.3 V and 3 V. Removal efficiency of phenolic compounds increased with increasing the time of electrolysis and applied potential, up to 78% for 300 min and potential of 3 V. GC–MS chromatograms confirmed that mechanism of phenolic compounds degradation is based on their dechlorination and demethylation followed by the process of aromatic ring degradation. Newly synthesized PbO2-GNRs as electrode material could be successfully implemented in wastewater treatment of phenolic compounds by the electrochemical oxidation process.", journal = "Applied Surface Science", title = "Electrochemical oxidation of a complex mixture of phenolic compounds in the base media using PbO2-GNRs anodes", volume = "529", pages = "147120", doi = "10.1016/j.apsusc.2020.147120" }
Savić, B., Stanković, D. M., Živković, S., Ognjanović, M., Tasić, G. S., Mihajlović, I.,& Brdarić, T.. (2020). Electrochemical oxidation of a complex mixture of phenolic compounds in the base media using PbO2-GNRs anodes. in Applied Surface Science, 529, 147120. https://doi.org/10.1016/j.apsusc.2020.147120
Savić B, Stanković DM, Živković S, Ognjanović M, Tasić GS, Mihajlović I, Brdarić T. Electrochemical oxidation of a complex mixture of phenolic compounds in the base media using PbO2-GNRs anodes. in Applied Surface Science. 2020;529:147120. doi:10.1016/j.apsusc.2020.147120 .
Savić, Branislava, Stanković, Dalibor M., Živković, Sanja, Ognjanović, Miloš, Tasić, Gvozden S., Mihajlović, Ivana, Brdarić, Tanja, "Electrochemical oxidation of a complex mixture of phenolic compounds in the base media using PbO2-GNRs anodes" in Applied Surface Science, 529 (2020):147120, https://doi.org/10.1016/j.apsusc.2020.147120 . .