Electrochemical activity of iron in acid treated bentonite and influence of added nickel
Samo za registrovane korisnike
2015
Autori
Mudrinić, Tihana
Mojović, Zorica

Milutinović Nikolić, Aleksandra

Mojović, Miloš

Žunić, Marija

Vukelić, Nikola

Jovanović, Dušan M.
Članak u časopisu (Objavljena verzija)

Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Bentonite originated from Macji Do, Serbia, was submitted to acid treatment at 70 degrees C for 30 min, while only the concentration of applied HCl varied. The obtained acid treated samples were used to modify glassy carbon (GC) electrode. The effect of applied acid treatment on the electrochemical behavior of GC electrodes modified with these materials was investigated. Furthermore, the effect of the introduction of nickel into acid treated samples was studied. The incorporation of nickel into acid treated bentonite was achieved by either ion exchange or impregnation/decomposition method. The obtained samples were characterized using the following methods: inductively coupled plasma (ICP), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and electron spin resonance (ESR) spectroscopy. The electrochemical behavior of these samples was tested by cyclic voltammetry in 0.1 mol dm(-3) H2SO4 solution. The ICP, FUR and ESR results exhibited a slight decrease of iron co...ntent in the acid treated samples. XRD and FTIR results confirmed that the conditions applied for the acid treatment were mild enough for the smectite structure to be preserved. The electrocatalytic test showed that the current response of Fe2+/Fe3+ oxidation/reduction process increased on the GC electrodes separately modified with each of the acid treated samples in comparison with current obtained on the GC electrode modified with untreated sample. These results indicated that applied acid treatment probably increased the accessibility of the electroactive iron within smectite. Cyclic voltammograms obtained for the GC electrodes modified with acid treated bentonite materials showed greater anodic charge (q(a)) than cathodic charge (q(c)). This difference might be due to iron detachment from smectite structure during the oxidation process. Further modification of the selected acid treated sample with nickel species resulted in decreased current response of the Fe2+/Fe3+ oxidation/reduction process and improved the reversibility of this process.
Ključne reči:
Acid treated bentonite / Modified glassy carbon electrode / NickelIzvor:
Applied Surface Science, 2015, 353, 1037-1045Izdavač:
- Elsevier
Finansiranje / projekti:
- Nanostrukturni funkcionalni i kompozitni materijali u katalitičkim i sorpcionim procesima (RS-45001)
- Biomarkeri u neurodegenerativnim i malignim procesima (RS-41005)
DOI: 10.1016/j.apsusc.2015.07.054
ISSN: 0169-4332
WoS: 000361220700132
Scopus: 2-s2.0-84941985427
Institucija/grupa
IHTMTY - JOUR AU - Mudrinić, Tihana AU - Mojović, Zorica AU - Milutinović Nikolić, Aleksandra AU - Mojović, Miloš AU - Žunić, Marija AU - Vukelić, Nikola AU - Jovanović, Dušan M. PY - 2015 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1682 AB - Bentonite originated from Macji Do, Serbia, was submitted to acid treatment at 70 degrees C for 30 min, while only the concentration of applied HCl varied. The obtained acid treated samples were used to modify glassy carbon (GC) electrode. The effect of applied acid treatment on the electrochemical behavior of GC electrodes modified with these materials was investigated. Furthermore, the effect of the introduction of nickel into acid treated samples was studied. The incorporation of nickel into acid treated bentonite was achieved by either ion exchange or impregnation/decomposition method. The obtained samples were characterized using the following methods: inductively coupled plasma (ICP), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and electron spin resonance (ESR) spectroscopy. The electrochemical behavior of these samples was tested by cyclic voltammetry in 0.1 mol dm(-3) H2SO4 solution. The ICP, FUR and ESR results exhibited a slight decrease of iron content in the acid treated samples. XRD and FTIR results confirmed that the conditions applied for the acid treatment were mild enough for the smectite structure to be preserved. The electrocatalytic test showed that the current response of Fe2+/Fe3+ oxidation/reduction process increased on the GC electrodes separately modified with each of the acid treated samples in comparison with current obtained on the GC electrode modified with untreated sample. These results indicated that applied acid treatment probably increased the accessibility of the electroactive iron within smectite. Cyclic voltammograms obtained for the GC electrodes modified with acid treated bentonite materials showed greater anodic charge (q(a)) than cathodic charge (q(c)). This difference might be due to iron detachment from smectite structure during the oxidation process. Further modification of the selected acid treated sample with nickel species resulted in decreased current response of the Fe2+/Fe3+ oxidation/reduction process and improved the reversibility of this process. PB - Elsevier T2 - Applied Surface Science T1 - Electrochemical activity of iron in acid treated bentonite and influence of added nickel VL - 353 SP - 1037 EP - 1045 DO - 10.1016/j.apsusc.2015.07.054 ER -
@article{ author = "Mudrinić, Tihana and Mojović, Zorica and Milutinović Nikolić, Aleksandra and Mojović, Miloš and Žunić, Marija and Vukelić, Nikola and Jovanović, Dušan M.", year = "2015", abstract = "Bentonite originated from Macji Do, Serbia, was submitted to acid treatment at 70 degrees C for 30 min, while only the concentration of applied HCl varied. The obtained acid treated samples were used to modify glassy carbon (GC) electrode. The effect of applied acid treatment on the electrochemical behavior of GC electrodes modified with these materials was investigated. Furthermore, the effect of the introduction of nickel into acid treated samples was studied. The incorporation of nickel into acid treated bentonite was achieved by either ion exchange or impregnation/decomposition method. The obtained samples were characterized using the following methods: inductively coupled plasma (ICP), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and electron spin resonance (ESR) spectroscopy. The electrochemical behavior of these samples was tested by cyclic voltammetry in 0.1 mol dm(-3) H2SO4 solution. The ICP, FUR and ESR results exhibited a slight decrease of iron content in the acid treated samples. XRD and FTIR results confirmed that the conditions applied for the acid treatment were mild enough for the smectite structure to be preserved. The electrocatalytic test showed that the current response of Fe2+/Fe3+ oxidation/reduction process increased on the GC electrodes separately modified with each of the acid treated samples in comparison with current obtained on the GC electrode modified with untreated sample. These results indicated that applied acid treatment probably increased the accessibility of the electroactive iron within smectite. Cyclic voltammograms obtained for the GC electrodes modified with acid treated bentonite materials showed greater anodic charge (q(a)) than cathodic charge (q(c)). This difference might be due to iron detachment from smectite structure during the oxidation process. Further modification of the selected acid treated sample with nickel species resulted in decreased current response of the Fe2+/Fe3+ oxidation/reduction process and improved the reversibility of this process.", publisher = "Elsevier", journal = "Applied Surface Science", title = "Electrochemical activity of iron in acid treated bentonite and influence of added nickel", volume = "353", pages = "1037-1045", doi = "10.1016/j.apsusc.2015.07.054" }
Mudrinić, T., Mojović, Z., Milutinović Nikolić, A., Mojović, M., Žunić, M., Vukelić, N.,& Jovanović, D. M.. (2015). Electrochemical activity of iron in acid treated bentonite and influence of added nickel. in Applied Surface Science Elsevier., 353, 1037-1045. https://doi.org/10.1016/j.apsusc.2015.07.054
Mudrinić T, Mojović Z, Milutinović Nikolić A, Mojović M, Žunić M, Vukelić N, Jovanović DM. Electrochemical activity of iron in acid treated bentonite and influence of added nickel. in Applied Surface Science. 2015;353:1037-1045. doi:10.1016/j.apsusc.2015.07.054 .
Mudrinić, Tihana, Mojović, Zorica, Milutinović Nikolić, Aleksandra, Mojović, Miloš, Žunić, Marija, Vukelić, Nikola, Jovanović, Dušan M., "Electrochemical activity of iron in acid treated bentonite and influence of added nickel" in Applied Surface Science, 353 (2015):1037-1045, https://doi.org/10.1016/j.apsusc.2015.07.054 . .