55. godišnja konferencije o aktuelnim problemima korišćenja i zaštite voda, Ivanjica, 25–27. maj 2026. [str. 303-308]
AUTHOR(S) / AUTOR(I): Aleksandar Đorđević 
, Kristina Radinović , Jelena Dimitrijević, Jadranka Milikić , Biljana Šljukić
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DOI: https://doi.org/10.46793/VODA26.303DJ
ABSTRACT / SAŽETAK:
Zagađenje voda organskim bojama predstavlja značajan ekološki problem usled njihove toksičnosti, hemijske stabilnosti i široke industrijske primene. U ovom radu sintetisan je CoAu/rGO nanokompozit i ispitan kao elektrohemijski senzor za detekciju metilen plavog (MB) i kongo crvenog (CR). Morfologija i sastav materijala potvrđeni su SEM–EDX analizom. Elektrohemijska merenja sprovedena su metodom ciklične voltametrije u 250 µM rastvoru MB i 250 µM rastvoru CR u fosfatnom puferu (PBS), pH = 7,1. Dobijeni su oksidacioni pikovi na –0,28 V za MB i +0,68 V za CR, sa jasno definisanim pikom za CR u odnosu na MB. Elektrohemijski rezultati ukazuju na potencijal CoAu/rGO nanokompozita za detekciju organskih boja u vodi.
KEYWORDS / KLJUČNE REČI:
elektrohemijska detekcija, CoAu/rGO, metilen plavo, kongo crveno, zagađenje vode
ACKNOWLEDGEMENT / PROJEKAT:
Autori žele da se zahvale Ministarstvu nauke, tehnološkog razvoja i inovacija Republike Srbije (ugovori br. 451-03-34/2026-03/200146, 451-03-33/2026-03/200146, 451-03-33/2026-03/200017 i 451-03-33/2026-03/200051)
REFERENCES / LITERATURA:
- Mokole, S.J.; Fayemi, O.E. A Nano-Powered Green and Chemically Synthesized Au/MWCNT Modified Electrochemical Sensor for Methylene Blue Detection in River Water. Nanoscale Adv. 2025, 7, 6828–6850, doi:10.1039/D5NA00396B.
- Flaih, E.H.; Kadhim, S.H. Removal and Electrochemical Investigation of Congo Red Dye in Aqueous Solutions by Using Bentonite. nq 2021, 19, 12–19, doi:10.14704/nq.2021.19.10.NQ21151.
- Mansour, D.; Alblawi, E.; Alsukaibi, A.K.D.; Al Shammari, B. Removal of Congo Red Dye by Electrochemical Advanced Oxidation Process: Optimization, Degradation Pathways, and Mineralization. Sustain. Water Resour. Manag. 2024, 10, 41, doi:10.1007/s40899-023-01022-x.
- Hayat, M.; Shah, A.; Nisar, J.; Shah, I.; Haleem, A.; Ashiq, M.N. A Novel Electrochemical Sensing Platform for the Sensitive Detection and Degradation Monitoring of Methylene Blue. Catalysts 2022, 12, 306, doi:10.3390/catal12030306.
- Ganash, A.; Alshammari, S.; Ganash, E. Development of a Novel Electrochemical Sensor Based on Gold Nanoparticle-Modified Carbon-Paste Electrode for the Detection of Congo Red Dye. Molecules 2022, 28, 19, doi:10.3390/molecules28010019.
- Elmorsi, T.M. Equilibrium Isotherms and Kinetic Studies of Removal of Methylene Blue Dye by Adsorption onto Miswak Leaves as a Natural Adsorbent. JEP 2011, 02, 817–827, doi:10.4236/jep.2011.26093.
- Bulut, Y.; Aydın, H. A Kinetics and Thermodynamics Study of Methylene Blue Adsorption on Wheat Shells. Desalination 2006, 194, 259–267, doi:10.1016/j.desal.2005.10.032.
- Shetti, N.P.; Malode, S.J.; Malladi, R.S.; Nargund, S.L.; Shukla, S.S.; Aminabhavi, T.M. Electrochemical Detection and Degradation of Textile Dye Congo Red at Graphene Oxide Modified Electrode. Microchemical Journal 2019, 146, 387–392, doi:10.1016/j.microc.2019.01.033.
- Brüschweiler, B.J.; Merlot, C. Azo Dyes in Clothing Textiles Can Be Cleaved into a Series of Mutagenic Aromatic Amines Which Are Not Regulated Yet. Regulatory Toxicology and Pharmacology 2017, 88, 214–226, doi:10.1016/j.yrtph.2017.06.012.
- Salhab, M.; Al Sarakbi, W.; Mokbel, K. Skin and Fat Necrosis of the Breast Following Methylene Blue Dye Injection for Sentinel Node Biopsy in a Patient with Breast Cancer. Int Semin Surg Oncol 2005, 2, 26, doi:10.1186/1477-7800-2-26.