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Electrooxidation of p-nitrophenol using a composite organo-smectite clay glassy carbon electrode

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2014
j.apsusc.2014.05.228.pdf (1.491Mb)
Authors
Žunić, Marija
Milutinović Nikolić, Aleksandra
Stanković, Dalibor
Manojlović, Dragan
Jović-Jovičić, Nataša
Banković, Predrag
Mojović, Zorica
Jovanović, Dušan M.
Article (Accepted Version)
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Abstract
Bentonite clay rich in smectite clay mineral from seldom investigated locality Mecji Do (MD) in Serbia was modified. The organomodification was performed with different loadings of benzyltrimethylammonium (BTMA) cation. The characterization of clay-based samples was performed, including XRD, FTIR and chemical and textural analysis. Electrochemical investigation was performed on a glassy carbon electrode (GCE) support with thin film of homogenously deposited either Na-enriched or one of organomodified clays forming composite electrodes. The behavior of the composite electrodes in the electrooxidation of p-nitrophenol (p-NP) in acidic media was analyzed using multisweep cyclic voltammetry. Oxidation of p-NP occurred at 1.2 V vs. Ag/AgCl for all investigated electrodes. The results indicate that the incorporation of BTMA cations into smectite enhanced the electrode stability toward the electrooxidation of p-NP in comparison to bare GCE and composite electrode based on Na-enriched clay. Th...e current density for the p-NP oxidation wave slightly decreased with the increase of BTMA loading. On the other hand the electrode stability was significantly improved with the increase of BTMA loading.

Keywords:
Composite electrode / Electrooxidation / p-Nitrophenol / Benzyltrimethylammonium cation / Electrode stability
Source:
Applied Surface Science, 2014, 313, 440-448
Publisher:
  • Elsevier Science Bv, Amsterdam
Projects:
  • Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-45001)
  • Application of advanced oxidation processes and nanostructured oxide materials for the removal of pollutants from the environment, development and optimisation of instrumental techniques for efficiency monitoring (RS-172030)
Note:
  • This is the peer-reviewed version of the article: M.J. Zunic, A.D. Milutinovic-Nikolic, D.M. Stankovic, D.D. Manojlovic, N.P. Jovic-Jovicic, P.T. Bankovic, Z.D. Mojovic, D.M. Jovanovic, Electrooxidation of ´ p-nitrophenol using a composite organosmectite clay glassy carbon electrode, Applied Surface Science (2014), http://dx.doi.org/10.1016/j.apsusc.2014.05.228
  • http://cer.ihtm.bg.ac.rs/handle/123456789/1576

DOI: 10.1016/j.apsusc.2014.05.228

ISSN: 0169-4332

WoS: 000340689000058

Scopus: 2-s2.0-84904810196
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3163
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